# What is it?

**SUNSCAN** is an autonomous **smart solar telescope** designed by the [**STAROS team**](https://staros-projects.org/). You can make observations very simply and obtain images of our star automatically without any special knowledge, showing prominences, flares or even sunspots. The Sunscan project is **open source** and **protected** by specific [licenses](/the-sunscan-project/license) to guarantee the rights of users and [authors](/the-sunscan-project/meet-the-team). 

{% hint style="success" %}
Feel free to contact us or [**support us**](https://staros-projects.org/en/support.html).\
It is thanks to donations that STAROS can continue its mission, and it only takes 2 minutes.\
👉 [https://staros-projects.org/support.html](https://staros-projects.org/en/support.html)
{% endhint %}

{% embed url="<https://youtu.be/x8C7sv2BqPM>" %}

Using **SUNSCAN** is very simple, it can be started in just a few seconds. Place **SUNSCAN** with its tripod, point at the Sun using a small integrated viewfinder. Wait few minutes for the Sun to naturally pass in front of the device thanks to the rotation of the Earth. Then enjoy the result directly on your smartphone or tablet with the integrated WIFI connection.

No need to buy expensive filters, computers, telescopes, or astronomical cameras—everything you need is compactly integrated into **SUNSCAN**.

<figure><img src="/files/1VbxkDyll6gLuL8lur9z" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/TZDsP9qVQuyTVAtAMA1V" alt=""><figcaption><p>Designed by <a href="https://www.freepik.com">Freepik</a></p></figcaption></figure>

Easily transportable, **SUNSCAN** is the perfect companion for gatherings with friends or public events. Each participant can view nearly real-time images of the Sun on their own smartphone, and all data can also be retrieved directly to a laptop for further exploration and sharing.

Compatible with **Android** and **iPhone**, the application can be downloaded directly to your phone or tablet.

<figure><img src="/files/Rz8Iu6kYfK4Icwt2nBLE" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
Join us on the **SUNSCAN** Discord server! 🌞 Whether you have technical questions about setting up, adjusting, or using your instrument, or you’d like to share your first images of the Sun, our passionate community is here to help and connect with you. Come chat, learn, and share your love for solar observation! 🚀✨

<https://discord.gg/TNGKj3cQmr>
{% endhint %}

{% hint style="danger" %}
Looking at the Sun can be extremely dangerous unless proper precautions are taken, and specialized solar viewing equipment. Never look at the Sun directly with your eyes. Even a brief, accidental glance through an unfiltered or improperly filtered optical system can cause immediate and permanent eye damage. Never allow unattended children to operate or be near a solar telescope system.
{% endhint %}

<figure><img src="/files/ItHFhGUq85PIDigUXEe0" alt=""><figcaption><p><a href="https://azur3dprintshop.com/201-SUNSCAN-STAROS.html">https://azur3dprintshop.com/201-SUNSCAN-STAROS.html</a></p></figcaption></figure>

<figure><img src="/files/RGGZ9AkDhQQl4oYLQZ6N" alt=""><figcaption><p><a href="https://www.shelyak.com/produit/optical-kit-for-sunscan-spectroheliograph/?lang=en">https://www.shelyak.com/produit/optical-kit-for-sunscan-spectroheliograph/?lang=en</a></p></figcaption></figure>


# How it works?

The SUNSCAN is a revolutionary spectroheliograph designed to let you capture images of the Sun in minutes, directly from your smartphone. This complete, self-contained unit is the fruit of several months' work by our team of enthusiasts. With the SUNSCAN, you can explore the wonders of the Sun like never before.

<figure><img src="/files/CdaRHeAgg1KIlqhDHe0I" alt=""><figcaption><p>Designed by <a href="https://www.freepik.com">Freepik</a></p></figcaption></figure>

&#x20;A sophisticated device that combines several advanced technologies to give you a unique experience. Here's how it works

* **Modular design**: The SUNSCAN is made up of several distinct parts, each designed for easy assembly. You can purchase each part separately via our partner dealers and follow our step-by-step building guide.
* **High-quality optics:** The SUNSCAN incorporates high-quality slit and lenses, grating and mirror to ensure sharp, detailed images of the Sun.
* **Raspberry Pi and miniature color camera**: the heart of the SUNSCAN is a Raspberry Pi that controls image capture. An integrated miniature color camera lets you instantly view the results on your smartphone.
* **Control via smartphone:** thanks to our dedicated app, you can control the SUNSCAN directly from your smartphone, making the experience even more intuitive and accessible.

With the SUNSCAN, you have in your hands a powerful tool for exploring the mysteries of the Sun. Whether you're an amateur astronomer or a technology enthusiast, the SUNSCAN is there to accompany you in your discoveries.


# Who's the Sunscan for?

### **The Sunscan: a tool for all astronomy enthusiasts**

The Sunscan is designed to meet the needs of all astronomy enthusiasts, whether beginners or experienced. Whether you're an amateur astronomer, a student of astronomy, or simply someone who enjoys gazing at the stars, the Sunscan is here to offer you a unique and rewarding experience.

* **For beginners:** The Sunscan is an excellent tool to start exploring the universe. With its intuitive interface and step-by-step guides, you can easily learn the basics of spectroheliography and capture your first images of the Sun.

<figure><img src="/files/7f70W4nO4vVVGnyoTLo8" alt=""><figcaption><p>Get effortless images of the sun and solar prominences in just a few minutes !</p></figcaption></figure>

* **For amateurs:** If you're already familiar with astronomy, the Sunscan lets you take your observations a step further. You can adjust the parameters to obtain more detailed images and explore different aspects of the Sun.

<figure><img src="/files/qRIm3clCaiuV5wgsdu1a" alt=""><figcaption></figcaption></figure>

### An ideal teaching tool for spectroscopy.

The Sunscan is designed to be a powerful, easy-to-use teaching tool, perfect for teachers who want to integrate spectroscopy into their curriculum. Here's how the Sunscan can help teachers and educators:

* **Easy-to-organize hands-on sessions :** The Sunscan is simple to set up and use, allowing teachers to focus on teaching rather than logistics. This means students can benefit from enriching hands-on experience without wasting time.
* **Teaching materials included :** We provide teaching guides and educational resources to help teachers integrate Sunscan into their curriculum. These resources include lesson plans, practical exercises and reflective questions to stimulate learning.
* **Flexibility for different levels** : Sunscan is adaptable to different teaching levels, from primary to higher education. Teachers can adjust activities to suit the needs and skills of their students...
* **Technical support :** Our community is always available to provide technical and pedagogical support to teachers. We're here to help you get the most out of Sunscan in your classroom...

### Build the Sunscan with your students for a unique learning experience

&#x20;The Sunscan offers an exceptional opportunity for teachers to create a collaborative, hands-on learning experience with their students. By building the Sunscan together, you can develop your students' science, technology, engineering and math skills while exploring the wonders of spectroscopy.

{% hint style="info" %}
Note that the SUNSCAN system enables users to retrieve their solar images in FITS, PNG, and JPG formats, providing flexibility for scientific post-analysis and advanced post-processing. For full instructions on accessing and downloading your data, please refer to [Retrieve Your Data](https://www.sunscan.net/use/retrieve-your-data).
{% endhint %}


# Gallery

With SUNSCAN, you'll have the opportunity to capture stunning images of the Sun across different wavelengths of light. Each wavelength reveals unique features of the Sun, such as sunspots, solar flares, and granulation patterns, allowing you to explore and document the dynamic activity of our star. Here are some results.&#x20;

<figure><img src="/files/zHp23JBPVzan3ZiiiAeg" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/6gR6tw9NVz0hmaO9vAAQ" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/7f70W4nO4vVVGnyoTLo8" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/JdEJ8TKB2LqYYGDoYetU" alt=""><figcaption></figcaption></figure>


# Meet the team

Behind the **SUNSCAN** is a passionate and dedicated team: [STAROS Projects](https://staros-projects.org/). Five members each bring their unique expertise to bear on making the **SUNSCAN** a success.

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th data-hidden></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>Valérie Desnoux</strong></td><td><a href="http://valerie.desnoux.free.fr/">http://valerie.desnoux.free.fr/</a></td><td></td><td><a href="/files/fDXVIItzfzwHMhv3bAZc">/files/fDXVIItzfzwHMhv3bAZc</a></td></tr><tr><td><strong>Olivier Garde</strong></td><td><a href="http://o.garde.free.fr/astro/">http://o.garde.free.fr/astro/</a></td><td></td><td><a href="/files/o2CQ2cfWO8EXdlZBglKk">/files/o2CQ2cfWO8EXdlZBglKk</a></td></tr><tr><td><strong>Guillaume Bertrand</strong></td><td><a href="https://guillaumebertrand.notion.site/">https://guillaumebertrand.notion.site/</a></td><td></td><td><a href="/files/W5sMjnHHrmVhx2FE1WJ9">/files/W5sMjnHHrmVhx2FE1WJ9</a></td></tr><tr><td><strong>Matthieu Le Lain</strong></td><td><a href="https://stellartrip.net/">https://stellartrip.net/</a></td><td></td><td><a href="/files/xlsyNuIdvhUfh9NTwbDb">/files/xlsyNuIdvhUfh9NTwbDb</a></td></tr><tr><td><strong>Christian Buil</strong></td><td><a href="http://www.astrosurf.com/buil/index.html">http://www.astrosurf.com/buil/</a></td><td></td><td><a href="/files/17tvn0PoYbgDeYrjAuoq">/files/17tvn0PoYbgDeYrjAuoq</a></td></tr></tbody></table>

### How to contact us

Would you like to find out more about Sunscan or do you have any questions ? Please do not hesitate to contact us at thew following email-address : <mark style="color:blue;">team AT staros-projects.org</mark>

More information on : [<mark style="color:blue;">https://staros-projects.org</mark>](https://staros-projects.org/)

**SUNSCAN** is first and foremost **YOUR ADVENTURE**, but we're here to help and support you in this discovery !


# License

### Protection of users and authors

The Sunscan project is protected by specific licenses to guarantee the rights of users and authors. These licenses ensure that the project remains open and accessible, while respecting the contributions of all participants.

***

### License for STL drawing files

&#x20;The STL drawing files for the Sunscan 3D housing are licensed under a Creative Commons - Attribution - NonCommercial - ShareAlike 4.0 France CC BY-NC-SA license . This license implies the following conditions:&#x20;

{% hint style="info" %}
[SUNSCAN](https://www.sunscan.net) © 2024 by [Staros Projects ](https://staros-projects.org/)is licensed under [CC BY-NC-SA 4.0 ](https://creativecommons.org/licenses/by-nc-sa/4.0/?ref=chooser-v1)&#x20;
{% endhint %}

* **Attribution:** You must credit the original author each time you share, repost or modify the code. All code must mention authorship.&#x20;
* **Share Alike:** If you modify or distribute the code, you must share it under the same CC BY-NC-SA license.&#x20;
* **Non-commercial:** The code may not be used for commercial purposes (unless agreed by Staros Projects).
* **No warranty:** The code is provided without any warranty, express or implied.
* **Limited liability:** The authors cannot be held responsible for any damage resulting from the use of the code.&#x20;
* **Permission to use:** You have permission to use, copy, modify and distribute the code, subject to the above conditions.&#x20;

This license allows users to download, print and share the plans, while respecting the rights of the creators and prohibiting commercial use.

:link: More detailed information on this license can be found here : <https://creativecommons.org/licenses/by-nc-sa/4.0/>

### Software license

Software associated with Sunscan is distributed under the GNU General Public License version 3.0 (GPLv3). This license implies the following conditions:&#x20;

{% hint style="info" %}
[SUNSCAN](https://www.sunscan.net) Software 2024 by [Staros Projects ](https://staros-projects.org/)is licensed under GNU GPLv3
{% endhint %}

* **Use, reproduction and modification:** The software may be freely used, reproduced, modified, distributed.&#x20;
* **Attribution:** GPL-licensed software must be redistributed with a copy of the license and authorship information.&#x20;
* **GPL compatibility:** GPLv3 is compatible with GNU GPL version 3 and later.&#x20;
* **Patent protection:** GPLv3 offers protection against software patents.&#x20;
* **Limitation of liability:** The license limits the liability of contributors. In no event shall the contributors be liable for any damages resulting from the use of the software.&#x20;
* **No warranty:** The software is provided “as is”, without warranty of any kind, either expressed or implied.&#x20;

This license ensures that software remains free and open, while protecting developers' rights and encouraging collaboration.&#x20;

:link: More detailed information on this license can be found here : <https://www.gnu.org/licenses/gpl-3.0.html>

***

By respecting these licenses, we can ensure that the Sunscan project remains an open and collaborative community effort. :tada:


# Get started!

The last step before discovering a new side of the Sun You're about to begin the most exciting stage of your SUNSCAN adventure: assembling and adjusting your spectroheliograph. This section guides you through each step to make sure you're ready to observe the wonders of the Sun like never before.

### An open-source project based on DIY

The SUNSCAN is an open-source project based on the “do it yourself” (DIY) concept. Everything is designed to help you succeed, without obstacles or complications. You don't need any special optical, mechanical or computer skills, or sophisticated technical equipment. Curiosity and a willingness to learn are the only keys to success.

<figure><img src="/files/ktXm4unk7ZUthaTYomHp" alt=""><figcaption></figcaption></figure>

### **Estimated Assembly Time**

Estimated assembly time for the SUNSCAN may vary according to your pace and experience. We've tried to provide an estimate based on the most accurate elements possible, but please bear in mind that this may vary.

* Total printing time :&#x20;
  * Prusa MK3-S printer: Approx. 30 hours.&#x20;
  * Bambulab printer: Approx. 18 hours.&#x20;
* Time to assemble housing with optics: Approx. 1 hour.
* &#x20;Raspberry Pi and camera installation time: Approx. 1 hour.
* Time to assemble adjust optics: Approx. 1 hour.

Taking these steps into account, the average overall assembly time is around 30 hours. All assembly steps are described in detail and illustrated on the following pages. We'll guide you through each phase to help you assemble your SUNSCAN successfully.

Still here? Then let's get going! :rocket:

<figure><img src="/files/sJzZfRZAHGMx4b4TXXbP" alt=""><figcaption></figcaption></figure>

{% hint style="danger" %}
Looking at the Sun can be extremely dangerous unless proper precautions are taken, and specialized solar viewing equipment. Never look at the Sun directly with your eyes. Even a brief, accidental glance through an unfiltered or improperly filtered optical system can cause immediate and permanent eye damage. Never allow unattended children to operate or be near a solar telescope system.
{% endhint %}

{% hint style="success" %}
Join us on the **SUNSCAN** Discord server! 🌞 Whether you have technical questions about setting up, adjusting, or using your instrument, or you’d like to share your first images of the Sun, our passionate community is here to help and connect with you. Come chat, learn, and share your love for solar observation! 🚀✨

<https://discord.gg/TNGKj3cQmr>
{% endhint %}


# List of parts

This section will help you navigate through all the necessary components required to build and assemble your Sunscan. Each section is dedicated to specific parts, providing detailed information on sourcing, optional accessories, etc.\
\
Explore the four main categories below to find what you need!


# Optics

In this section, we describe the optical components required for this project. You have two options for sourcing these parts: purchasing them individually through **Edmund Optics, Shelyak and SVBony** or acquiring a complete optical kit from **Shelyak**. Below are the details of each option to help you decide the best approach for your needs.

<figure><img src="/files/WeWsCgajwf2h6oIqfm1j" alt=""><figcaption></figcaption></figure>

<table data-view="cards"><thead><tr><th></th></tr></thead><tbody><tr><td><img src="/files/AlAfXVcfbFWpR0iugrfR" alt="" data-size="original"></td></tr><tr><td><img src="/files/ywHEObUY9rmxEPNcjliU" alt="" data-size="original"></td></tr><tr><td><img src="/files/QitNg6pQAER9lodanURb" alt="" data-size="original"></td></tr></tbody></table>

***

### **Purchase Individual Components**&#x20;

<table><thead><tr><th>Name</th><th width="273">Ref</th><th>Link</th></tr></thead><tbody><tr><td>Main refractor lense</td><td>Edmund #32-917 - D=25 F=200 </td><td><a href="https://www.edmundoptics.fr/p/25mm-dia-x-200mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2697/">https://www.edmundoptics.fr/p/25mm-dia-x-200mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2697/</a></td></tr><tr><td>Camera lense</td><td>Edmund #32-327 - D=25 F=100</td><td><a href="https://www.edmundoptics.fr/p/25mm-dia-x-100mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2288/">https://www.edmundoptics.fr/p/25mm-dia-x-100mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2288/</a></td></tr><tr><td>Collimator lense</td><td>Edmund #32-325 - D=25 F=75</td><td><a href="https://www.edmundoptics.fr/p/25mm-dia-x-75mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2287/">https://www.edmundoptics.fr/p/25mm-dia-x-75mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2287/</a></td></tr><tr><td>Mirror</td><td>Edmund #46-716 - 23x16x5mm</td><td><a href="https://www.edmundoptics.fr/p/16-x-23mm-uv-enhanced-aluminum-lambda4-mirror/7050/">https://www.edmundoptics.fr/p/16-x-23mm-uv-enhanced-aluminum-lambda4-mirror/7050/</a></td></tr><tr><td>Plane holographic reflection grating</td><td>Edmund #15-755 - 2400 l/mm - 25x25mm</td><td><a href="https://www.edmundoptics.fr/p/2400-grooves-25x25mm-200-800nm-holographic-high-performance-reflection-grating/43683/">https://www.edmundoptics.fr/p/2400-grooves-25x25mm-200-800nm-holographic-high-performance-reflection-grating/43683/</a></td></tr><tr><td>Neutral density 1.25" filter</td><td>SV139 - 1.25inch - ND 0.9</td><td><a href="https://www.svbony.com/sv139-nd-filter/#W9108B">https://www.svbony.com/sv139-nd-filter/#W9108B</a></td></tr><tr><td>Slit</td><td>Sol’Ex / SUNSCAN 2 positions 7 – 10 µm (GEN2)</td><td><a href="https://www.shelyak.com/produit/fente-solex-sunscan-2-positions-7-10-%c2%b5m-gen2/">https://www.shelyak.com/produit/fente-solex-sunscan-2-positions-7-10-%c2%b5m-gen2/</a></td></tr></tbody></table>

### **Optical Kit - Shelyak**

Alternatively, Shelyak offers a convenient kit that includes all the required optics pre-selected and ready to assemble. This option is ideal for those who want to minimize the risk of error and ensure all components are compatible with each other.

<https://www.shelyak.com/produit/optical-kit-for-sunscan-spectroheliograph/?lang=en>

**What’s Included in the Shelyak Kit:**

* All necessary lenses, mirror.
* Holographic reflection grating for light dispersion.
* Slit.

<figure><img src="/files/xiRbWfqI0HegTM9jGlM3" alt="" width="374"><figcaption></figcaption></figure>

***


# Mechanics

This section outlines the mechanical components required for assembling the project. These parts are essential for mounting and adjusting various components of the system. All the mechanical parts can be sourced individually from various suppliers, offering flexibility in terms of material, size, and quality.

The recommended brands and models have been provided to ensure compatibility and ease of assembly.

For convenience, a complete mechanical kit is available for purchase from **Azur3DPrint**, which includes all necessary 3D-printed parts, screws, inserts, etc. You can order it in a single click [here](https://azur3dprintshop.com/201-SUNSCAN-STAROS.html).

<figure><img src="/files/ItHFhGUq85PIDigUXEe0" alt="" width="200"><figcaption></figcaption></figure>

| Name                          | Ref                                                                               | Link                                                                                                            |
| ----------------------------- | --------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
| Helical focuser               | SV161 1.25inch Double Helical Micro Focuser for Telescope Guide Scope Metal Black | <https://www.svbony.com/sv161-double-helical-focuser-for-telescope/>                                            |
| Soldering tips                | Ruthex Soldering Tips                                                             | <https://www.amazon.fr/ruthex-pointes-souder-daide-fusion/dp/B0CDBSGSXY/ref=asc_df_B0CDBSGSXY/>                 |
| M2 (or #2-56) threaded insert | Ruthex M2 (or #2-56)                                                              | <https://www.amazon.fr/ruthex-Insert-filet%C3%A9-pi%C3%A8ces-dimprimante/dp/B088QJG676/ref=asc_df_B088QJG676/?> |
| M3 (or #4-40) threaded insert | Ruthex M3 (or #4-40)                                                              | <https://www.amazon.fr/dp/B08BCRZZS3/ref=sr_1_1_sspa>                                                           |
| M4 (or #8-32) threaded insert | Ruthex M4 (or #8-32)                                                              | <https://www.amazon.fr/dp/B07YSV66Y5/ref=sr_1_1_sspa>                                                           |
| 1/4inch threaded insert       | Ruthex 1/4inch (Kodak)                                                            | <https://www.amazon.fr/dp/B09MTS6ZZQ/ref=sr_1_1_sspa>                                                           |
| M4 Hex Socket Cap Screw       |                                                                                   | <https://www.amazon.fr/-/en/gp/product/B0CY2CY7CY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1>              |
| M3 Hex Socket Cap Screw       |                                                                                   | <https://www.amazon.fr/-/en/gp/product/B0CY298Q67/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1>               |
| M2 Hex Socket Cap Screw       |                                                                                   | <https://www.amazon.fr/-/en/dp/B0C1BLSBLW/ref=sr_1_8>                                                           |
| 1/4" - 20 Screw               |                                                                                   | <https://www.amazon.fr/-/en/gp/product/B01AZ558WE/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1>              |

### Optional Mechanical Parts

| Name     | Ref                   | Link                                                                                      |
| -------- | --------------------- | ----------------------------------------------------------------------------------------- |
| AZ Mount | SkyWatcher AZ Pronto  | <https://www.astroshop.de/fr/alt-azimut-sans-goto/monture-skywatcher-az-pronto/p,82104>   |
| Tripod   | Vaonis vespera tripod | <https://www.astroshop.de/fr/pieds-supports/vaonis-trepied-reglable-pour-vespera/p,76569> |


# Electronics

This section covers the essential electronic components required for your Sunscan. These parts provide the computational, power, and imaging capabilities necessary for the system.

| Component                                                         | Link                                                                                                                                 |
| ----------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
| Raspberry Pi 4B - 4 Go                                            | <https://www.kubii.com/fr/cartes-nano-ordinateurs/2772-nouveau-raspberry-pi-4-modele-b-4gb-kubii-5056561800349.html?src=raspberrypi> |
| Active Cooler (GeeekPi 3510 Version Cooling Kit)                  | <https://www.amazon.fr/-/en/gp/product/B07JGNF5F8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1>                                   |
| Micro SD Card 128 Go Class 10 U3 V30                              | <https://www.amazon.fr/-/en/dp/B09X7DNF6G/ref=sr_1_6>                                                                                |
| Pisugar 3 Plus Portable 5000 mAh UPS Lithium Battery Power Module | <https://www.amazon.fr/-/en/dp/B09QRS666Y/ref=sr_1_4>                                                                                |
| Official Camera HQ -  C to CS Mount (IMX477 sensor)               | <https://www.kubii.com/en/cameras-sensors/2950-official-hq-camera-c-to-cs-mount-5056561800127.html>                                  |
| Official Power Supply for Raspberry Pi 4 15.3W USB-C              | <https://www.kubii.com/en/power-supplies/2678-1050-official-power-supply-for-raspberry-pi-4-153w-usb-c-3272496300002.html>           |

{% hint style="warning" %}
**Warning:** Camera CSI ribbon cables are delicate components and should be handled with care to avoid damage. Improper handling can cause these cables to malfunction. If you need a replacement, affordable options are available [here](https://www.kubii.com/fr/nappes-cables-adaptateurs-audio/432-31-nappe-cable-pour-raspberry-pi-camera-kubii-3272496001411.html#/dimensions-200mm_x_16mm_8_x_06).
{% endhint %}


# 3D printing

v2.1.1 (2025-10-29)

To start making your own SUNSCAN, you'll need to have a 3D printer, black PETG filament, and a soldering iron. The black PETG is crucial because it offers both the rigidity required for durable, functional parts and the opacity needed to block infrared light. The soldering iron will be necessary to properly insert metal inserts into the 3D printed parts, ensuring a strong and reliable connection. Don’t worry about being a 3D printing expert—basic familiarity with 3D printing is sufficient, and there will be plenty of resources and community support to guide you through the process.&#x20;

On this page you will find all the STL files necessary for printing a SUNSCAN. Pictures allow you to see what the pieces look like.&#x20;

For convenience, a complete mechanical kit is available for purchase from **Azur3DPrint**, which includes all necessary 3D-printed parts, screws, inserts, etc. You can order it in a single click [here](https://azur3dprintshop.com/201-SUNSCAN-STAROS.html).

<figure><img src="/files/ItHFhGUq85PIDigUXEe0" alt="" width="200"><figcaption></figcaption></figure>

{% hint style="danger" %}
**Orientation** : Be careful to orient the part on the plate of your 3D printer on the right side. The side highlighted in orange on the visuals must be on the plate.
{% endhint %}

{% hint style="info" %}
**Infill** : For all parts 15% infill with a grid pattern is sufficient.&#x20;
{% endhint %}

## Sunscan

<table data-full-width="false"><thead><tr><th width="291" data-type="files">File (ref-version-name.stl)</th><th width="68" data-type="number">Qty</th><th width="108">Accuracy</th><th>Image</th><th data-hidden>Comments</th></tr></thead><tbody><tr><td><a href="/files/EtaLwNuuZmwj0ertG4NJ">/files/EtaLwNuuZmwj0ertG4NJ</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/LQfsMV5UfDKMcKUWzU6H" alt="" data-size="original"></td><td><ul><li>7x M4x8.1 Ruthex Insert</li><li>1x M3x5.7 Rhutex Insert</li><li>7x M4x30 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/bPVpNBddqTKzQUxF8HG6">/files/bPVpNBddqTKzQUxF8HG6</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/TU5thvLX7BFoWLYPgxwP" alt="" data-size="original"></td><td><ul><li>20x M4x8.1 Ruthex Insert</li><li>2x 1/4inch Ruthex insert</li></ul></td></tr><tr><td><a href="/files/MjdPHeqzxK5h5YVqV2Gk">/files/MjdPHeqzxK5h5YVqV2Gk</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/iEPnF7AFBxYceSEj9c05" alt="" data-size="original"></td><td><ul><li>4x M4x12 Hex Socket Cap Screw</li><li>1x M4x8.1 Ruthex Insert</li><li>1x M4x20Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/e0WOX2vTMJEajIVYwehb">/files/e0WOX2vTMJEajIVYwehb</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/CKEFpeBaZKnGiOWYMAL5" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/UDIMd9txEBsEYOipMaG2">/files/UDIMd9txEBsEYOipMaG2</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/piYJCtT9zvbQKIBMxBEX" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/XLfYgl3HQMKc2zalZgZs">/files/XLfYgl3HQMKc2zalZgZs</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/BNPMJ7UrnQQB5TDTUsTC" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/XmVtSvotkTnxmskFovpC">/files/XmVtSvotkTnxmskFovpC</a></td><td>2</td><td>0.16 mm</td><td><img src="/files/UrFdGFexaQ19nqu9373M" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/x7hjAfTeG80agWjSPLt7">/files/x7hjAfTeG80agWjSPLt7</a></td><td>2</td><td>0.16 mm</td><td><img src="/files/52R5o47IkrKcIh1mxUDy" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/9nNG4C3u2iGvNsVNhVBk">/files/9nNG4C3u2iGvNsVNhVBk</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/gpD8G9eiUlnCE9n136Wh" alt="" data-size="original"></td><td><ul><li>3x M3x5.7 Ruthex Insert</li><li>1x M4x12 Hex Socket Cap Screw</li><li>1x M3x10 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/ctz4NSekyAVJZyv2wAHQ">/files/ctz4NSekyAVJZyv2wAHQ</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/C5dZfH81gxXnOVsanoAy" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/CXtoHn6CICwDb2cLifWq">/files/CXtoHn6CICwDb2cLifWq</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/gvPr3LBQgL2pLHe0jDja" alt="" data-size="original"></td><td><ul><li>4x M4x8 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/2xWSm1waHRBEWN7CGxx1">/files/2xWSm1waHRBEWN7CGxx1</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/Qn1ZaqawDURAdhylkNib" alt="" data-size="original"></td><td><ul><li>1x M3x5.7 Rhutex Insert</li><li>2x M4x12 Hex Socket Cap Screw</li><li>1x M3x10 Hex socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/yseBksSnV1ZddsKgqU0j">/files/yseBksSnV1ZddsKgqU0j</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/GWkETSmZxhkfDTLLkJzL" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/eEouJcLIDTBm9mcWZHK7">/files/eEouJcLIDTBm9mcWZHK7</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/66iMkEo4ablYQLW8l0IV" alt="" data-size="original"></td><td><ul><li>4x M4x20 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/qw0Jc4NeLdpsq4J3r2Ue">/files/qw0Jc4NeLdpsq4J3r2Ue</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/er6FvsHurpsI6S9pPmh1" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/lRgQDI6jy4NeQgW0KhvH">/files/lRgQDI6jy4NeQgW0KhvH</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/hjvFNbLyZx9EVtX9JOS5" alt="" data-size="original"></td><td><ul><li>1x M4x20 Hex Socket Cap screw</li><li>1x M4 Nuts</li></ul></td></tr><tr><td><a href="/files/CCOkVqIUNA7AtZ06HvpC">/files/CCOkVqIUNA7AtZ06HvpC</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/8ucjpzu7PXNBs9WKJQe5" alt="" data-size="original"></td><td><ul><li>1x M3x10 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/1Ptw8XxJ2mkfoL2pQaXH">/files/1Ptw8XxJ2mkfoL2pQaXH</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/JqlSHhNXnn2zDqH7rvyw" alt="" data-size="original"></td><td><ul><li>2x M3x5.7 Rhutex Insert</li><li>2x M3x16 Hex Socket Cap Screw</li><li>2x M4x20 Hex Socket Cap screw</li><li>2x M4 washers</li></ul></td></tr><tr><td><a href="/files/m2eKZ2OA3ehmBoqiaY7D">/files/m2eKZ2OA3ehmBoqiaY7D</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/8Ke4cMYylRpzNSEEW3Vh" alt="" data-size="original"></td><td><ul><li>2x M3x16 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/wpUKYjOmbxixzuSN0APX">/files/wpUKYjOmbxixzuSN0APX</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/BGZ3u3iIKF4W93uSY3cH" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/6mtgAaOM4shJ7CUQL9Dx">/files/6mtgAaOM4shJ7CUQL9Dx</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/ib4I4OxA4UBA1k2Crvam" alt="" data-size="original"></td><td><ul><li>1x M3x5.7 Ruthex Insert</li><li>1x M3x6 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/U4hOuaIOsHbWH8xIWzmy">/files/U4hOuaIOsHbWH8xIWzmy</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/cR8vMuaOzcNazb04hWnY" alt="" data-size="original"></td><td></td></tr></tbody></table>

## Camera case

<table data-full-width="false"><thead><tr><th width="360" data-type="files">File (ref-version-name.stl)</th><th width="97">Accuracy</th><th width="278">Image</th><th data-hidden>Comments</th></tr></thead><tbody><tr><td><a href="/files/qTr4rhjor4pqriL5nPaK">/files/qTr4rhjor4pqriL5nPaK</a></td><td>0.20 mm</td><td><img src="/files/Na1l08kH61PKungpKnAG" alt="" data-size="original"></td><td>-</td></tr><tr><td><a href="/files/HOnBujVyz2LOyoH2r7c9">/files/HOnBujVyz2LOyoH2r7c9</a></td><td>0.20 mm</td><td><img src="/files/JbNFe0P9r9eSG4gZ0wpW" alt="" data-size="original"></td><td><ul><li>4x M2x10 screw</li></ul></td></tr><tr><td><a href="/files/j07EI9KSzNpMRyGoVdFh">/files/j07EI9KSzNpMRyGoVdFh</a></td><td>0.16 mm</td><td><img src="/files/litzkl16LR59YuTZ63eh" alt="" data-size="original"></td><td></td></tr></tbody></table>

## Raspberry Pi case&#x20;

<table data-full-width="false"><thead><tr><th width="393" data-type="files">File (ref-version-name.stl)</th><th width="107">Accuracy</th><th width="241">Image</th><th data-hidden>Ref</th></tr></thead><tbody><tr><td><a href="/files/F9zof30AJNFOVdc7AXOf">/files/F9zof30AJNFOVdc7AXOf</a></td><td>0.20 mm</td><td><div><figure><img src="/files/dFyR7AsFZ4LLsGQGUp33" alt=""><figcaption></figcaption></figure></div></td><td>25-4-bottom-RPI4-case</td></tr><tr><td><a href="/files/tERWDJDb38MoulA83cP7">/files/tERWDJDb38MoulA83cP7</a></td><td>0.20 mm</td><td><img src="/files/KIobgceqnsONKDSPmTFy" alt="" data-size="original"></td><td>26-4-top-RPI4-case</td></tr><tr><td><a href="/files/UIUQGV9GVZD2KKtzPc3k">/files/UIUQGV9GVZD2KKtzPc3k</a></td><td>0.16 mm</td><td></td><td>27-8-RPI4-button</td></tr></tbody></table>


# 1. Assembly instructions

v1.6.2 - 2025/11/18

This page offers a clear and user-friendly guide for assembling your SUNSCAN project. The instructions are provided as a downloadable PDF with step-by-step illustrations and easy-to-follow directions. Whether you're a seasoned DIYer or new to assembly, this guide simplifies the process, ensuring that every component is put together correctly and efficiently. With minimal text and straightforward visual cues, it ensures a hassle-free experience, making it accessible for everyone. Get your SUNSCAN project up and running in no time with our intuitive, frustration-free assembly guide.

{% file src="/files/jw3vLMOaKhP2cv8dNahJ" %}

<figure><img src="/files/NS9bx9wkUg9so2ShjKcI" alt=""><figcaption></figcaption></figure>


# 2. Installing Sunscan OS

Your Raspberry Pi needs an operating system to work. This is it. **Sunscan OS** is our official supported operating system.

## 1 - Installing Raspberry Pi Imager

{% embed url="<https://www.raspberrypi.com/software/>" %}

<figure><img src="/files/cTUzSndJTYS8uj1xI42C" alt=""><figcaption></figcaption></figure>

## 2 - Download SunScan OS

{% embed url="<https://drive.google.com/file/d/1ktJRJT5SZf5DjDA105eazF1z6UuYk5wX/view?usp=sharing>" %}

## 3 - Installation on MicroSD (reco 128 Gb)

* Insert the micro SD card into a reader connected to your computer&#x20;
* Launch RPI Imager Click on “Choose Device” and select Raspberry Pi 4 B+&#x20;
* Click on “Choose OS” and select “Use Custom”&#x20;
* Choose the image “sunscan-os-xxx.img.xz” downloaded previously&#x20;
* Click on “Choose storage” and select your SD card (size of about 128 Gb)

{% hint style="danger" %}
Double check this step, and choose the correct device to avoid emptying another storage device!
{% endhint %}

* Click on “Next” Then click on “No” for customization&#x20;
* Then click on “Yes” to start the installation.&#x20;
* And now, wait… it’s long, up to several hours including the verification phase!

## 4 - Installing the "Sunscan" mobile app

<table data-view="cards"><thead><tr><th></th></tr></thead><tbody><tr><td><img src="/files/dlNpglY0044G969Q7wIx" alt="" data-size="original"></td></tr><tr><td><img src="/files/5snoSdqWW69qTSs4DGSs" alt="" data-size="original"></td></tr></tbody></table>

## 5 - Login to Sunscan

Turn on sunscan: short press on power button (click).&#x20;

Wait a minute, then the wifi network “sunscan-\*\*\*” should appear on your mobile.&#x20;

Connect to this wifi network with the password “SunScanByStaros”&#x20;

Then launch the SUNSCAN application 🙂


# 3. Configure and adjust

This page provides a clear and user-friendly guide for adjusting your SUNSCAN system. The instructions are available as a downloadable PDF, complete with step-by-step illustrations and straightforward directions. Whether you’re experienced or new to adjustments, this guide ensures each setting is fine-tuned correctly for optimal performance.

{% file src="/files/5TNpnfYW43S4r7r5XZF2" %}

<figure><img src="/files/5WIrSpgMJLlXQYL7d408" alt=""><figcaption></figcaption></figure>


# Prepare

<figure><img src="/files/9A2l55Ipk6wCWAjJyE0i" alt=""><figcaption></figcaption></figure>


# Mobile application

<figure><img src="/files/TiKBEb0Mzv9afwvoyZez" alt=""><figcaption></figcaption></figure>


# Setup

<figure><img src="/files/SBKUnbOOr9jrR8gC2qMn" alt=""><figcaption></figcaption></figure>


# Mobile app overview

Our mobile application, available for both Android and iOS, allows you to easily take control of the SUNSCAN instrument and perform solar scans. Below is a brief overview of the key screens and features that make it easy to operate SUNSCAN and manage your data.

## 1. Home Screen

The home screen displays the connection status between the app and the SUNSCAN device. To connect, ensure that SUNSCAN is powered on and that your phone is connected to the Wi-Fi network "sunscan-\*\*\*\*\*\*". Once the connection is successful, the status indicator will turn green, allowing you to connect the camera and begin capturing solar scans.

Additionally, basic solar ephemeris (such as sunrise, sunset, and solar position data) will also be displayed on this screen, providing useful contextual information for your scans.

<figure><img src="/files/LaVUi9LQb2IQSaXeRG5n" alt=""><figcaption></figcaption></figure>

## 2. Scan Screen

On this screen, you can capture videos that will be used to generate your solar images. When the camera is connected, a toolbar appears with the following options:

* **Color Button**: Displays the image in color mode. In this mode, the camera is set to automatic exposure.
* **Norm Button**: Activates normalization. \
  Two types of normalization are available: Min/Max and N-th percentile.
* **Adjust Button**: Provides access to advanced settings (discussed further below).
* **Grid Button**: Toggles a grid display to help with alignment and adjustments.

On the right side of the screen, there is a "Crop" button that lets you adjust the framing of the image by moving the crop area up or down. Once framed, you can start recording a solar scan by pressing the designated record button.

<figure><img src="/files/NxHdbmFH21Z4D89zYAnB" alt=""><figcaption></figcaption></figure>

### **Advanced Settings**

This panel allows you to manually adjust the camera’s exposure and gain. Three exposure modes are available:

* **Default Mode**: Ranges from 20 ms to 160 s.
* **SE (Short Exposure) Mode**: From 0.1 ms to 20 ms.
* **LP (Long Exposure) Mode**: From 0.2 s to 30 s.

To switch between modes, press and hold the "EXP" button. The "Max ADU" section displays the 12-bit ADU values for each color channel (R, G, B). A single tap on any channel (red, green, or blue) allows you to select only that specific channel for display.

<figure><img src="/files/DrYTNgvmqzl0CmLGqzGT" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
For best results \
\- Use a low gain setting (e.g., 1 dB).\
\- When capturing the Sun in H-alpha wavelength, work exclusively with the red channel.\
\- Avoid overexposing or underexposing your images. A smiley icon will indicate whether your exposure settings are optimal. Note that this indicator is provided for general guidance and covers the most common scenarios.
{% endhint %}

## 3. Gallery Screen

This screen lets you manage your solar images. From here, you can start image processing, view your images, download them to your device, or delete them if needed.

<figure><img src="/files/KCsOUqBXIijHGiZN3x36" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/KQlmJp6z0yUmOcvR7r0x" alt=""><figcaption></figcaption></figure>

## 4. Settings Screen

The settings screen provides access to various configuration options, including changing the app's language.

With these simple and intuitive controls, the SUNSCAN mobile app, available on Android and iOS, makes it easy to perform high-quality solar scans and manage your data directly from your phone. Plus, with internet connectivity, you can view basic solar ephemerides on the home screen, giving you valuable solar information at a glance.

<figure><img src="/files/BekCYfWZJ0t5fXswmBHt" alt=""><figcaption></figcaption></figure>


# What’s New in Version 1.3

2025-03-06

## 🌟 **New multi-edit mode**

You can now perform actions on multiple scans in a single operation. For example, deleting multiple scans at once. There are two ways to access this feature: either by long-pressing on a scan or using the scroll wheel button at the top right of the screen.

{% embed url="<https://youtu.be/tgcykE9fSJ0>" %}

## 🎞️ **Create GIF animations**

With the multi-edit mode, you can generate GIF animations from your solar images. A new way to share your observations!

{% embed url="<https://youtu.be/prp4D3nwaBg>" %}

## ➕ **Stack your images for better results**

Stacking is now available: combine multiple images to improve the signal-to-noise ratio and reduce atmospheric turbulence effects. More than just addition, SUNSCAN integrates an advanced algorithm that simultaneously corrects local distortions in H-alpha or other images and automatically applies them to the continuum image!

{% embed url="<https://youtu.be/dUCy_tk8nTo>" %}

## 🔍 **New zoom/pan system**

A smoother zoom and pan system is now available, offering a better user experience, especially on iOS.

{% embed url="<https://youtu.be/EqXK5kh5qwU>" %}

## 🌞 **Improved artificial eclipse**

For better visualization of solar prominences, we have added:

* Anti-aliasing for a smoother black mask.
* A new Doppler eclipse feature.

## 🏷️ **Scan tagging system**

At the end of a solar scan, you can specify the observed wavelength. This allows for correct image coloring during post-processing.

<figure><img src="/files/uF4q18R4ULCsnoAk6zsm" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/awzrHfoscaAIQcIUouwl" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/lXaw7G56jpaAKypbMq0H" alt=""><figcaption></figcaption></figure>

## 🪐 **Helium processing**

If you scan the helium line near the sodium doublet and your scan is properly tagged, a dedicated processing step is applied to generate an optimal image. This processing is also available in the advanced processing panel.

<figure><img src="/files/wtna8mXUpc7V6SmpMVX6" alt=""><figcaption></figcaption></figure>

## 💧 **Optional SUNSCAN watermark**

An option in the settings allows you to add a watermark with the SUNSCAN logo, the observer's name (if provided), the scan time, and information about the observed wavelength.

## 📏 **FWHM calculation tool**

A new FWHM calculation tool has been integrated to facilitate SUNSCAN’s zero-order tuning.

{% embed url="<https://youtu.be/8doFc8ULF7Y>" %}

## :desktop: **New Version of the Sunscan.local application**

The application used to retrieve your data on your computer has been completely redesigned. It now allows you to:

* View stacking files
* View animation files
* Perform multiple folder selections for download or deletion
* Do the same for stacking and animations
* Zoom in/out on image thumbnails within a scan folder
* Display storage values (remaining/total space)
* Enhance image viewing with basic controls (zoom, rotation)
* Implement some minor design optimizations

## 🐛 **Bug Fixes**

Minor issues resolved for better stability and performance.


# What’s New in Version 1.4

2025-11-01

* **Updated the core of the application** and all dependencies to meet the new Android requirements (Google Play target API level).
* **Improved image saving function** on smartphones and tablets.
* **Fixed several bugs** in the application and in the **SUNSCAN OS** firmware running on the **RPI4**.
* **Improved control interface**: the acquisition window is now taller, making helium line acquisitions easier.
* **Enhanced ephemeris panel**: when the app is launched without a connection to the SUNSCAN Wi-Fi, it now uses GPS data and stores it for future sessions. This allows the ephemeris panel to be displayed even when the app is started while connected to SUNSCAN.
* **New negative view** for the **H-alpha line**.

<figure><img src="/files/GUcRZQaytxmAiB4XvWtZ" alt=""><figcaption></figcaption></figure>

* **New color mode** for Doppler images: choose between **Orange-Blue** and **Red-Blue**.

<figure><img src="/files/XRemFDhRCMEwntTfgSur" alt=""><figcaption></figcaption></figure>

* **Doppler images are no longer calculated by default**. A dedicated button allows you to enable or disable Doppler image generation in advanced processing.
* **Scan animation** is now available for **stacked images**.

<div><figure><img src="/files/kCiBCbIaGWkYOZpr34W0" alt=""><figcaption></figcaption></figure> <figure><img src="/files/fSJiUpLmmmqB4tO7eA2y" alt=""><figcaption></figcaption></figure></div>

* **Continuum image calculation** is now performed by default — no need to open the advanced mode.
* New language available: Spanish.
* **New camera screen orientation option**: choose between **camera on the right**, **camera on the left**, or **automatic mode** based on the phone’s position.

<figure><img src="/files/Xh55oxU8qchNP85OXMU4" alt=""><figcaption></figcaption></figure>

#### **Experimental Features**

* **New focus assistant**: displays a sharpness score to help achieve better focus on the sun’s edges.\
  This feature will likely be improved in future versions.

  The system calculates a moving average score based on the slope of the two detected edges of the sun.\
  To obtain reliable measurements:

  * Keep the sun horizontally centered and as wide as possible in the frame.
  * Avoid changing the exposure time during this phase, as the score depends on the contrast between the sky background and the continuum.

<figure><img src="/files/J1eqxx07SShfqOMMXmRr" alt=""><figcaption></figcaption></figure>

* **New 3D mode**: view the sun as a **3D globe**, with rotation and zoom controlled by device motion.\
  This mode is currently experimental, but the integration of projection and 3D rendering mechanisms lays the groundwork for much more advanced features in upcoming releases.

{% embed url="<https://youtu.be/ZaY8VRacrfQ>" %}

<br>


# Observe

{% embed url="<https://www.youtube.com/watch?v=u0lkpp-ddh0>" %}


# The sun in Hα

This guide provides step-by-step instructions for performing Hα solar observations using the SUNSCAN system.

<figure><img src="/files/aaSBYBZMG2YttF6zMzdR" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
The **Hα line** reveals a detailed view of the Sun's chromosphere, the layer just above the Sun’s surface. When observing in **Hα**, we can see features like solar prominences, filaments, sunspots, and plages, which are active regions on the Sun’s surface. This specific wavelength of light, at 656.3 nanometers, is emitted by hydrogen atoms and highlights areas of intense magnetic activity. Observing the Sun in the H-alpha line allows us to capture dynamic solar phenomena, such as flares and eruptions !
{% endhint %}

### Prerequisites

Before starting, ensure you've completed the configuration and adjustment steps outlined here: [Sunscan Configuration and Adjustment](https://www.sunscan.net/build/3.-configure-and-adjust).&#x20;

{% embed url="<https://www.youtube.com/watch?v=u0lkpp-ddh0>" %}

### Observation Steps

* **Power on** SUNSCAN\
  Turn on the Sunscan system.
* **Connect to** SUNSCAN **Wi-Fi**\
  Using the mobile application, connect to the SUNSCAN Wi-Fi network.
* **Connect the Camera**\
  In the app, tap the "Connect the Camera" button.
* **Align the Telescope with the Sun**\
  Use the pinhole sight to point the telescope at the Sun.

<figure><img src="/files/966ajko5K2g64IJFcudA" alt="" width="563"><figcaption></figcaption></figure>

* **Fine-tune the Sun’s Position**\
  On the scanning page, refine the Sun's centering within the field of view.
* **Verify H-alpha Positioning**\
  Ensure that you are centered on the Sun and that the H-alpha line is roughly centered vertically.

<figure><img src="/files/dCsjPvKy57haC4p23QaU" alt=""><figcaption></figcaption></figure>

* **Optimize Focusing**\
  Adjust the focus both on the camera side and the telescope side for optimal clarity.
* **Crop the Image**\
  Crop the image to the desired frame for your observation.
* **Prepare for Solar Motion**\
  Move the telescope slightly so the Sun is just outside the sensor's view. Be mindful of the Sun's motion so it will move across the sensor during the scan.
* **Start the Capture**\
  After positioning the Sun just outside the sensor, begin the capture and wait a few minutes as the Sun moves across the sensor. Allow a few additional seconds after the Sun has crossed to capture any solar prominences, then stop the acquisition.
* **Process the Scan**\
  Go to the gallery, tap the thumbnail of your scan to start the reconstruction of the solar disk.
* **Admire Your Images**\
  View your reconstructed solar images.
* **Advanced processing (Continuum and Doppler)**\
  To apply additional processing, such as continuum or Doppler images, click the small gear icons.
* **View Scan Information and log**\
  Click the small "i" icon to see detailed information about your scan.


# Reference Cards

These printable reference cards are designed to help solar observers quickly identify spectral lines and configure SUNSCAN settings for optimal results. Each card fits the standard credit card format.

{% file src="/files/pJ64OFZpLl6OfEf359m5" %}

{% hint style="info" %}
**Important Notes**

Exposure times and gain settings are **indicative values** and must be adjusted based on:

* Sky transparency conditions
* Whether the Raspberry Pi HQ camera has been defiltered or not
* Local atmospheric seeing
  {% endhint %}

<figure><img src="/files/7QmUKSrJRE5KmWFJJJ1R" alt=""><figcaption></figcaption></figure>


# Colored sun spectrum

SUNSCAN offers a unique observational experience by allowing users to visualize the Sun's spectrum in full color, revealing it in a whole new light. With its integrated color sensor, the instrument displays the solar spectrum with exceptional precision. This capability lets users distinguish the Sun's natural spectral colors in high resolution, showcasing the vivid range from deep reds through greens to violets.

Beyond colors, SUNSCAN reveals thousands of absorption lines, each corresponding to specific elements in the Sun’s atmosphere that absorb certain wavelengths. These dark lines, known as Fraunhofer lines, represent a detailed chemical fingerprint of the Sun, allowing enthusiasts and scientists alike to explore solar composition and activity.&#x20;

<figure><img src="/files/QIMjzivO4ljkYGhvpz7R" alt=""><figcaption><p>Sodium D-lines</p></figcaption></figure>

To activate the color mode on SUNSCAN and start viewing the Sun’s spectrum in full color, follow these steps:

1. **Power on SUNSCAN**\
   Begin by turning on the SUNSCAN instrument using the power button.
2. **Connect to SUNSCAN Wi-Fi**\
   Open the SUNSCAN mobile app and connect to the SUNSCAN Wi-Fi network on your mobile device.
3. **Connect the Camera**\
   In the app, tap "Connect Camera" to establish a connection with the SUNSCAN camera.
4. **Enable Color Mode**\
   Navigate to the "Camera" section in the app, where you’ll find a button labeled "Color." Tap this button to activate color mode. When the mode is activated, the button will turn green, indicating that you are now in full-color mode.

Once activated, the color mode enables SUNSCAN to display the solar spectrum in vibrant colors !

<figure><img src="/files/PHXNtRGT5VuOfbDpNURG" alt=""><figcaption><p>Hβ line</p></figcaption></figure>

<figure><img src="/files/iymta2VWIynV4vnh1BkH" alt=""><figcaption><p>Ca II lines</p></figcaption></figure>

<figure><img src="/files/A2XS4aWGSZxmMVgx7HbX" alt=""><figcaption><p>Near IR telluric lines</p></figcaption></figure>


# Share


# Share your images


# Observe with your friends


# Retrieve your data

To retrieve data acquired by the SUNSCAN system, follow these simple steps. All the data collected is stored on the Raspberry Pi 4's microSD card, ensuring that it is easily accessible. To get started, ensure the SUNSCAN is powered on, next connect your laptop to the SUNSCAN's Wi-Fi network, identified as "sunscan-\*\*\*\*\*\*". Once connected, open a web browser and navigate to&#x20;

[**http://sunscan.local**](http://sunscan.local)

Here, you will be greeted with a minimalist interface designed for ease of use. The interface allows you to browse through all of your data effortlessly. You can download the raw scan data in PNG 16-bit format (file named "sunscan\_raw\.png") for high-quality image post processing. Additionally, all processed images are available for download in JPG format. If you need the original raw video, it is available in the SER format, a standard for astronomical video capturing. You can also consult detailed processing logs to track and review the data processing steps.

{% hint style="info" %}
This portal is not only designed for data access but is also useful for backing up your SUNSCAN data.
{% endhint %}

<figure><img src="/files/iQwtc6rNNkU4oozx5CIf" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/4g27z1cYhI3NtE6FQwc1" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/sueO1lP8KChydXs9IqAX" alt=""><figcaption></figcaption></figure>


# Stay tuned / Need help ?

{% hint style="success" %}
Join us on the **SUNSCAN** Discord server! 🌞 Whether you have technical questions about setting up, adjusting, or using your instrument, or you’d like to share your first images of the Sun, our passionate community is here to help and connect with you. Come chat, learn, and share your love for solar observation! 🚀✨

<https://discord.gg/TNGKj3cQmr>
{% endhint %}

### Visit our website

You'll find all the information you need about our various projects and actions on our STAROS Projects website:

* [https://staros-projects.org](https://staros-projects.org/en)

### Subscribe to our newsletter

To receive the latest news and updates straight to your inbox, subscribe to our newsletter on our website:&#x20;

* [https://staros-projects.org](https://staros-projects.org/en)

### Development

To keep abreast of the latest news and future developments in the SUNSCAN project, follow us on the following platforms:&#x20;

* [GitHub](https://github.com/staros-projects)

### Better yet, help us!&#x20;

The SUNSCAN project is a community effort. We're always looking for passionate contributors to help improve and develop the project. If you'd like to get involved, please go to the next page:&#x20;

* [Contribution page](/about/can-i-help)

By getting involved with us, you can not only keep up to date with the latest news, but also actively contribute to the evolution of the Sunscan project. :muscle:


# Can i help?

The Sunscan project is an open-source initiative that allows you to participate in the creation and improvement of a unique spectroheliograph. We are thrilled to welcome you to our team and benefit from your skills and enthusiasm.

### Why Contribute?

Contributing to an open-source project like Sunscan offers numerous benefits. You will have the opportunity to develop your skills, learn new things, and be part of a dynamic and passionate community!

### How to Contribute?

There are many ways to contribute to the Sunscan project. You can help in the following areas:

* **Translations**: Help us make the project accessible to a broader audience by translating our documentation and website.
* **Software Development**: Participate in improving and extending the features of our amazing spectroheliograph.
* **Communication**: Help us promote the Sunscan project through social media, blogs, and events.
* **User Support**: Offer your help and advice to users who have questions or encounter difficulties with the Sunscan.

### How to Start?

To begin, we invite you to consult the code repositories where you will find all the necessary information to contribute:

* Sunscan backend repository : <https://github.com/staros-projects/sunscan-backend>
* Sunscan mobile app repository : <https://github.com/staros-projects/sunscan-app>

Do not hesitate to contact us for any questions or to discuss your ideas at the team address : team AT staros-projects.org. We are eager to welcome you to work together to make the Sunscan project even more exceptional.

### Join Us!

The Sunscan project is an exciting adventure that allows you to combine your interest in astronomy with your desire to contribute to an open-source project. We are convinced that your participation will be valuable, and we encourage you to join us without hesitation. Together, we can create something truly special and advance our understanding of the universe.


# FAQ

Frequently Asked Question

Welcome to the Frequently Asked Questions section for the Sunscan project.&#x20;

Here you'll find answers to the most common questions about our SpectroHeliograph.If you can't find the answer to your question, please don't hesitate to contact our team at: <team@staros-projects.org>

Happy exploring!

<details>

<summary><strong>If I already have a Raspberry Pi at home, can I use it?</strong></summary>

To ensure guaranteed operation and minimal cost, we've specified the use of a Raspberry Pi 4B with 4 GB RAM. If you have a different model (e.g., a Pi 4B 8 GB), it's likely to work similarly. You can try using it, however, we can't guarantee optimal performance compared to the intended uses. The Raspberry Pi 5, with its different architecture, hasn't been tested yet. We'll update the specifications as soon as we've conducted conclusive tests.

</details>

<details>

<summary><strong>I have several Raspberry Pi cameras at home, can I use any camera of equivalent size?</strong></summary>

No, the camera we've selected meets specific qualitative criteria to provide a scientifically and visually acceptable result. It's not impossible that in the future, other cameras may be added to the list of compatible components.

</details>

<details>

<summary><strong>Can I reuse the optical parts from my Sol'Ex to make a Sunscan?</strong></summary>

No, the Sunscan has been developed independently with a new optical design and therefore new specific optics.

</details>

<details>

<summary><strong>I don't have a 3D printer, what can I do?</strong></summary>

No worries! We've partnered with companies that offer commercial 3D printing of the kit. These companies adhere to our specifications and ensure production quality that allows for building a quality Sunscan. You can find more information on the dedicated page of our website.

</details>

<details>

<summary><strong>Is it possible to use the Sunscan without a smartphone?</strong></summary>

No, it is not possible to use the Sunscan without a smartphone or tablet. The Sunscan is designed as an all-in-one, autonomous, and portable device. Its operation is specifically intended to be used with a mobile device (smartphone or tablet) as the control interface. This design choice ensures a user-friendly experience and maintains the portability and independence of the system. The mobile app is an integral part of the Sunscan's functionality, providing the necessary controls and data visualization features for optimal use of the SpectroHeliograph.

</details>

<details>

<summary><strong>Where can I find help if I encounter problems during the construction or use of my Sunscan?</strong></summary>

We've set up several resources to help you:

* Detailed documentation on our website
* Video tutorials to guide you step by step
* Email support for more specific question

</details>

<details>

<summary><strong>Is there a Sunscan user community?</strong></summary>

Yes, an active community of Sunscan users regularly shares experiences, tips, and observations on the [Sol'Ex mailing list](https://groups.io/g/Solex-project). Feel free to join them to exchange and learn!

</details>

<details>

<summary>Can i used Sunscan without mobile phone or tablet ?</summary>

No, Sunscan has been developed exclusively for use on mobiles and tablets. At this stage, no other use is planned.

</details>


# Qu'est-ce que c'est ?

{% hint style="warning" %}
Ce site est en cours de traduction, merci pour votre compréhension.
{% endhint %}

**SUNSCAN** is est un télescope solaire autonome et intelligent conçu par [**l'équipe STAROS**](https://staros-projects.org/). Il permet d'effectuer des observations très simples et d'obtenir automatiquement et sans connaissances particulières des images de notre étoile, montrant des protubérances, des éruptions ou encore des tâches solaires. Le projet Sunscan est **open source** et **protégé** par des [licences](/fr/le-projet-sunscan/licence) spécifiques afin de garantir les droits des utilisateurs et des auteurs.&#x20;

{% hint style="success" %}
N'hésitez pas à nous contacter ou [**nous soutenir**](https://staros-projects.org/support.html). \
C'est grâce aux dons que **STAROS** peut poursuivre sa mission, et ça ne prends que 2 minutes\
👉 <https://staros-projects.org/support.html>
{% endhint %}

{% embed url="<https://youtu.be/x8C7sv2BqPM>" %}

L'utilisation de **SUNSCAN** est très simple, elle peut être démarrée en quelques secondes. Placez **SUNSCAN** sur son trépied, pointez le Soleil à l'aide du petit viseur intégré. Attendez quelques minutes que le Soleil passe naturellement devant l'appareil grâce à la rotation de la Terre. Profitez ensuite du résultat directement sur votre smartphone ou votre tablette grâce à la connexion WIFI intégrée.

Il n'est pas nécessaire d'acheter des filtres, des ordinateurs, des télescopes ou des caméras astronomiques coûteux - tout ce dont vous avez besoin est intégré de manière compacte dans **SUNSCAN**.

<figure><img src="/files/1VbxkDyll6gLuL8lur9z" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/TZDsP9qVQuyTVAtAMA1V" alt=""><figcaption><p>Designed by <a href="https://www.freepik.com">Freepik</a></p></figcaption></figure>

Facilement transportable, **SUNSCAN** est le compagnon idéal pour les réunions entre amis ou les événements publics. Chaque participant peut visualiser des images du Soleil en temps quasi réel sur son propre smartphone, et toutes les données peuvent également être récupérées directement sur un ordinateur portable pour une exploration et un partage plus approfondis.

Compatible avec **Android** et **iPhone**, l'application peut être téléchargée directement sur votre téléphone ou votre tablette.

<figure><img src="/files/Rz8Iu6kYfK4Icwt2nBLE" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
Rejoignez-nous sur le serveur Discord **SUNSCAN** ! 🌞 Que vous ayez des questions techniques sur le montage, les réglages ou l'utilisation de votre instrument, ou que vous souhaitiez partager vos premières images du Soleil, notre communauté passionnée est là pour vous aider et échanger avec vous. Venez discuter, apprendre et partager autour de votre passion pour l'observation solaire ! 🚀✨\
[https://discord.gg/TNGKj3cQmr](https://discord.com/invite/TNGKj3cQmr)
{% endhint %}

{% hint style="danger" %}
Regarder le Soleil peut être extrêmement dangereux si l'on ne prend pas les précautions nécessaires et si l'on ne dispose pas d'un équipement d'observation solaire spécialisé. Ne regardez jamais le Soleil directement avec vos yeux. Même un bref coup d'œil accidentel à travers un système optique non filtré ou mal filtré peut provoquer des lésions oculaires immédiates et permanentes. Ne laissez jamais des enfants sans surveillance utiliser un télescope solaire ou s'en approcher.<br>
{% endhint %}

<figure><img src="/files/HmbrGJ07scayozvQ1a17" alt=""><figcaption><p><a href="https://azur3dprintshop.com/201-SUNSCAN-STAROS.html">https://azur3dprintshop.com/201-SUNSCAN-STAROS.html</a></p></figcaption></figure>

<figure><img src="/files/j8eANbNxBgwQ74g2P9oc" alt=""><figcaption><p><a href="https://www.shelyak.com/produit/kit-optique-pour-spectroheliographe-sunscan/">https://www.shelyak.com/produit/kit-optique-pour-spectroheliographe-sunscan/</a></p></figcaption></figure>


# Comment ça fonctionne ?

Le SUNSCAN est un spectrohéliographe révolutionnaire conçu pour vous permettre de capturer des images du Soleil en quelques minutes, directement depuis votre smartphone. Cet appareil complet et autonome est le fruit de plusieurs mois de travail de notre équipe de passionnés. Avec le SUNSCAN, vous pouvez explorer les merveilles du Soleil comme jamais auparavant.

<figure><img src="/files/CdaRHeAgg1KIlqhDHe0I" alt=""><figcaption><p>Designed by <a href="https://www.freepik.com">Freepik</a></p></figcaption></figure>

Un appareil sophistiqué qui combine plusieurs technologies de pointe pour vous offrir une expérience unique. Voici comment il fonctionne

* **Conception modulaire**: Le SUNSCAN est composé de plusieurs parties distinctes, chacune conçue pour un assemblage facile. Vous pouvez acheter chaque pièce séparément auprès de nos revendeurs partenaires et suivre notre guide de construction étape par étape.
* **Optique de haute qualité :** Le SUNSCAN est équipé d'une fente et de lentilles, d'un réseau et d'un miroir de haute qualité qui permettent d'obtenir des images nettes et détaillées du Soleil.
* **Raspberry Pi et caméra couleur miniature**: le cœur du SUNSCAN est un Raspberry Pi qui contrôle la capture d'images. Une caméra couleur miniature intégrée vous permet de visualiser instantanément les résultats sur votre smartphone.
* **Contrôle via smartphone :** grâce à notre application dédiée, vous pouvez contrôler le SUNSCAN directement depuis votre smartphone, rendant l'expérience encore plus intuitive et accessible.

Avec le SUNSCAN, vous avez entre les mains un outil puissant pour explorer les mystères du Soleil. Que vous soyez un astronome amateur ou un passionné de technologie, le SUNSCAN est là pour vous accompagner dans vos découvertes.


# Pour qui ?

### Le **SUNSCAN : un outils pour tous les passionnés d'astronomie**

Le SUNSCAN est conçu pour répondre aux besoins de tous les passionnés d'astronomie, qu'ils soient débutants ou expérimentés. Que vous soyez un astronome amateur, un étudiant en astronomie ou simplement quelqu'un qui aime regarder les étoiles, le SUNSCAN est là pour vous offrir une expérience unique et enrichissante.

* **Pour les débutants :** Le SUNSCAN est un excellent outil pour commencer à explorer l'univers. Grâce à son interface intuitive et à ses guides pas à pas, vous pouvez facilement apprendre les bases de la spectrohéliographie et capturer vos premières images du Soleil.

<figure><img src="/files/7f70W4nO4vVVGnyoTLo8" alt=""><figcaption><p>Get effortless images of the sun and solar prominences in just a few minutes !</p></figcaption></figure>

* **Pour les amateurs :** Si vous êtes déjà familiarisé avec l'astronomie, le SUNSCAN vous permet d'aller plus loin dans vos observations. Vous pouvez ajuster les paramètres pour obtenir des images plus détaillées et explorer différents aspects du Soleil.

<figure><img src="/files/qRIm3clCaiuV5wgsdu1a" alt=""><figcaption></figcaption></figure>

### Un outil pédagogique idéal pour la spectroscopie.

Le SUNSCAN est conçu pour être un outil pédagogique puissant et facile à utiliser, parfait pour les enseignants qui souhaitent intégrer la spectroscopie dans leur programme. Voici comment le SUNSCAN peut aider les enseignants et les éducateurs :

* **Des sessions pratiques faciles à organiser :** Le SUNSCAN est simple à installer et à utiliser, ce qui permet aux enseignants de se concentrer sur l'enseignement plutôt que sur la logistique. Les élèves peuvent ainsi bénéficier d'une expérience pratique enrichissante sans perdre de temps.
* **Matériel pédagogique inclus :** Nous fournissons des guides pédagogiques et des ressources éducatives pour aider les enseignants à intégrer SUNSCAN dans leur programme. Ces ressources comprennent des plans de cours, des exercices pratiques et des questions de réflexion pour stimuler l'apprentissage.
* **Flexibilité pour différents** niveaux : SUNSCAN s'adapte à différents niveaux d'enseignement, du primaire à l'enseignement supérieur. Les enseignants peuvent ajuster les activités en fonction des besoins et des compétences de leurs élèves...
* **Support technique :** Notre communauté est toujours disponible pour fournir un support technique et pédagogique aux enseignants. Nous sommes là pour vous aider à tirer le meilleur parti de SUNSCAN dans votre classe...

### Construisez un SUNSCAN avec vos élèves pour une expérience d'apprentissage unique.

Le SUNSCAN offre aux enseignants une occasion exceptionnelle de créer une expérience d'apprentissage pratique et collaborative avec leurs élèves. En construisant le SUNSCAN ensemble, vous pouvez développer les compétences de vos élèves en sciences, technologie, ingénierie et mathématiques tout en explorant les merveilles de la spectroscopie.

{% hint style="info" %}
Notez que le système SUNSCAN permet aux utilisateurs de récupérer leurs images solaires aux formats FITS, PNG et JPG, ce qui offre une certaine souplesse pour l'analyse scientifique ultérieure et le post-traitement avancé. Pour des instructions complètes sur l'accès et le téléchargement de vos données, veuillez vous référer à [Récupération des données](https://www.sunscan.net/use/retrieve-your-data).
{% endhint %}


# Gallery

With SUNSCAN, you'll have the opportunity to capture stunning images of the Sun across different wavelengths of light. Each wavelength reveals unique features of the Sun, such as sunspots, solar flares, and granulation patterns, allowing you to explore and document the dynamic activity of our star. Here are some results.&#x20;

<figure><img src="/files/zHp23JBPVzan3ZiiiAeg" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/6gR6tw9NVz0hmaO9vAAQ" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/7f70W4nO4vVVGnyoTLo8" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/JdEJ8TKB2LqYYGDoYetU" alt=""><figcaption></figcaption></figure>


# L'équipe

Derrière **SUNSCAN** se trouve une équipe passionnée : [STAROS Projects](https://staros-projects.org/). Les cinq membres apportent chacun leur expertise unique pour faire du projet **SUNSCAN** une réussite.

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th data-hidden></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>Valérie Desnoux</strong></td><td><a href="http://valerie.desnoux.free.fr/">http://valerie.desnoux.free.fr/</a></td><td></td><td><a href="/files/fDXVIItzfzwHMhv3bAZc">/files/fDXVIItzfzwHMhv3bAZc</a></td></tr><tr><td><strong>Olivier Garde</strong></td><td><a href="http://o.garde.free.fr/astro/">http://o.garde.free.fr/astro/</a></td><td></td><td><a href="/files/o2CQ2cfWO8EXdlZBglKk">/files/o2CQ2cfWO8EXdlZBglKk</a></td></tr><tr><td><strong>Guillaume Bertrand</strong></td><td><a href="https://guillaumebertrand.notion.site/">https://guillaumebertrand.notion.site/</a></td><td></td><td><a href="/files/W5sMjnHHrmVhx2FE1WJ9">/files/W5sMjnHHrmVhx2FE1WJ9</a></td></tr><tr><td><strong>Matthieu Le Lain</strong></td><td><a href="https://stellartrip.net/">https://stellartrip.net/</a></td><td></td><td><a href="/files/xlsyNuIdvhUfh9NTwbDb">/files/xlsyNuIdvhUfh9NTwbDb</a></td></tr><tr><td><strong>Christian Buil</strong></td><td><a href="http://www.astrosurf.com/buil/index.html">http://www.astrosurf.com/buil/</a></td><td></td><td><a href="/files/17tvn0PoYbgDeYrjAuoq">/files/17tvn0PoYbgDeYrjAuoq</a></td></tr></tbody></table>

### Comment nous contacter

Vous souhaitez en savoir plus sur **SUNSCAN** ou vous avez des questions ? N’hésitez pas à nous contacter à l’adresse suivante : <team@staros-projects.org>\
Plus d’informations sur : <https://staros-projects.org>.

\
**SUNSCAN** est avant tout VOTRE AVENTURE, et nous sommes là pour vous aider et vous accompagner dans cette découverte !


# Licence

### Protection des utilisateurs et des auteurs

Le projet Sunscan est protégé par des licences spécifiques qui garantissent les droits des utilisateurs et des auteurs. Ces licences assurent que le projet reste ouvert et accessible, tout en respectant les contributions de tous les participants.

***

Licence pour les fichiers de designs STL

Les fichiers de conception STL pour le boîtier Sunscan 3D sont sous licence Creative Commons - Attribution - NonCommercial - ShareAlike 4.0 France CC BY-NC-SA . Cette licence implique les conditions suivantes :

{% hint style="info" %}
[SUNSCAN](https://www.sunscan.net) © 2024 par [Staros Projects ](https://staros-projects.org/)est sous licence [CC BY-NC-SA 4.0 ](https://creativecommons.org/licenses/by-nc-sa/4.0/?ref=chooser-v1)&#x20;
{% endhint %}

* **Attribution :** Vous devez citer l'auteur original chaque fois que vous partagez, repostez ou modifiez le code. Tout le code doit mentionner l'auteur.<br>
* **Partage à l'identique :** Si vous modifiez ou distribuez le code, vous devez le partager sous la même licence CC BY-NC-SA.<br>
* **Non commercial :** Le code ne peut être utilisé à des fins commerciales (sauf accord de Staros Projects).<br>
* **Pas de garantie :** Le code est fourni sans aucune garantie, expresse ou implicite.<br>
* **Responsabilité limitée :** Les auteurs ne peuvent être tenus responsables de tout dommage résultant de l'utilisation du code.<br>
* **Autorisation d'utilisation :** Vous avez la permission d'utiliser, de copier, de modifier et de distribuer le code, sous réserve des conditions mentionnées.

Cette licence permet aux utilisateurs de télécharger, d'imprimer et de partager les plans, tout en respectant les droits des créateurs et en interdisant l'utilisation commerciale.

:link: Des informations plus détaillées sur cette licence sont disponibles ici : <https://creativecommons.org/licenses/by-nc-sa/4.0/>

### Licence des logiciels

Le logiciel associé à Sunscan est distribué sous la licence publique générale GNU version 3.0 (GPLv3). Cette licence implique les conditions suivantes :&#x20;

{% hint style="info" %}
Les logiciels [SUNSCAN](https://www.sunscan.net) 2024 par [Staros Projects ](https://staros-projects.org/)est sous licence GNU GPLv3
{% endhint %}

* **Utilisation, reproduction et modification :** Le logiciel peut être librement utilisé, reproduit, modifié, distribué.<br>
* **Attribution :** Les logiciels sous licence GPL doivent être redistribués avec une copie de la licence et des informations sur l'auteur.<br>
* **Compatibilité avec la GPL :** La GPLv3 est compatible avec la GNU GPL version 3 et suivantes.<br>
* **Protection des brevets :** La GPLv3 offre une protection contre les brevets logiciels.<br>
* **Limitation de la responsabilité :** La licence limite la responsabilité des contributeurs. Les contributeurs ne peuvent en aucun cas être tenus responsables des dommages résultant de l'utilisation du logiciel.<br>
* **Pas de garantie :** Le logiciel est fourni « tel quel », sans garantie d'aucune sorte, explicite ou implicite.

Cette licence garantit que les logiciels restent libres et ouverts, tout en protégeant les droits des développeurs et en encourageant la collaboration.

:link: Des informations plus détaillées sur cette licence sont disponibles ici : <https://www.gnu.org/licenses/gpl-3.0.html>

***

En respectant ces licences, nous pouvons nous assurer que le projet Sunscan reste un effort communautaire ouvert et collaboratif. :tada:


# Démarrer !

La dernière étape avant de découvrir une nouvelle facette du Soleil Vous êtes sur le point de commencer l'étape la plus excitante de votre aventure SUNSCAN : l'assemblage et le réglage de votre spectrohéliographe. Cette section vous guide à travers chaque étape afin que vous soyez prêt à observer les merveilles du Soleil comme jamais auparavant..

### Un projet open-source basé sur le "Do It Yourself"

Le SUNSCAN est un projet open-source basé sur le concept « do it yourself » (DIY). Tout est conçu pour vous aider à réussir, sans obstacles ni complications. Vous n'avez besoin d'aucune compétence particulière en optique, mécanique ou informatique, ni d'aucun équipement technique sophistiqué. La curiosité et la volonté d'apprendre sont les seules clés du succès.

<figure><img src="/files/ktXm4unk7ZUthaTYomHp" alt=""><figcaption></figcaption></figure>

### **Temps d'assemblage estimé**

Le temps de montage estimé pour le SUNSCAN peut varier en fonction de votre rythme et de votre expérience. Nous avons essayé de fournir une estimation basée sur les éléments les plus précis possibles, mais veuillez garder à l'esprit que cela peut varier.

* Durée totale de l'impression :&#x20;
  * Prusa MK3-S: Environ 30 heures.&#x20;
  * Bambulab: Environ 18 heures.&#x20;
* Temps d'assemblage du boîtier avec l'optique : Environ 1 heure.
* Temps d'installation du Raspberry Pi et de la caméra : Environ 1 heure.
* Temps d'assemblage pour ajuster les optiques : Environ 1 heure.

En tenant compte de ces étapes, le temps de montage total moyen est d'environ 30 heures. Toutes les étapes du montage sont décrites en détail et illustrées dans les pages suivantes. Nous vous guiderons à travers chaque phase pour vous aider à assembler votre SUNSCAN avec succès.

Vous êtes encore là ? Alors, allons-y ! :rocket:

<figure><img src="/files/sJzZfRZAHGMx4b4TXXbP" alt=""><figcaption></figcaption></figure>

{% hint style="success" %}
Rejoignez-nous sur le serveur Discord **SUNSCAN** ! 🌞 Que vous ayez des questions techniques sur le montage, les réglages ou l'utilisation de votre instrument, ou que vous souhaitiez partager vos premières images du Soleil, notre communauté passionnée est là pour vous aider et échanger avec vous. Venez discuter, apprendre et partager autour de votre passion pour l'observation solaire ! 🚀✨\
[https://discord.gg/TNGKj3cQmr](https://discord.com/invite/TNGKj3cQmr)
{% endhint %}

{% hint style="danger" %}
Regarder le Soleil peut être extrêmement dangereux si l'on ne prend pas les précautions nécessaires et si l'on ne dispose pas d'un équipement d'observation solaire spécialisé. Ne regardez jamais le Soleil directement avec vos yeux. Même un bref coup d'œil accidentel à travers un système optique non filtré ou mal filtré peut provoquer des lésions oculaires immédiates et permanentes. Ne laissez jamais des enfants sans surveillance utiliser un télescope solaire ou s'en approcher.
{% endhint %}


# Liste des pièces

Cette section vous aidera à naviguer à travers tous les composants nécessaires à la construction et à l'assemblage de votre Sunscan. Chaque section est consacrée à des pièces spécifiques et fournit des informations détaillées sur les sources d'approvisionnement, les accessoires optionnels, etc.\
\
Explorez les quatre catégories principales ci-dessous pour trouver ce dont vous avez besoin !


# Optique

Dans cette section, nous décrivons les composants optiques nécessaires pour ce projet. Vous avez deux options pour vous procurer ces pièces : les acheter individuellement auprès de fournisseurs tels qu'Edmund Optics, Shelyak et SVBony, ou bien acquérir un kit optique complet auprès de Shelyak. Vous trouverez ci-dessous les détails de chaque option pour vous aider à choisir la solution la plus adaptée à vos besoins.

<figure><img src="/files/WeWsCgajwf2h6oIqfm1j" alt=""><figcaption></figcaption></figure>

<table data-view="cards"><thead><tr><th></th></tr></thead><tbody><tr><td><img src="/files/AlAfXVcfbFWpR0iugrfR" alt="" data-size="original"></td></tr><tr><td><img src="/files/ywHEObUY9rmxEPNcjliU" alt="" data-size="original"></td></tr><tr><td><img src="/files/QitNg6pQAER9lodanURb" alt="" data-size="original"></td></tr></tbody></table>

***

### **Purchase Individual Components**&#x20;

<table><thead><tr><th>Name</th><th width="273">Ref</th><th>Link</th></tr></thead><tbody><tr><td>Main refractor lense</td><td>Edmund #32-917 - D=25 F=200 </td><td><a href="https://www.edmundoptics.fr/p/25mm-dia-x-200mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2697/">https://www.edmundoptics.fr/p/25mm-dia-x-200mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2697/</a></td></tr><tr><td>Camera lense</td><td>Edmund #32-327 - D=25 F=100</td><td><a href="https://www.edmundoptics.fr/p/25mm-dia-x-100mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2288/">https://www.edmundoptics.fr/p/25mm-dia-x-100mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2288/</a></td></tr><tr><td>Collimator lense</td><td>Edmund #32-325 - D=25 F=75</td><td><a href="https://www.edmundoptics.fr/p/25mm-dia-x-75mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2287/">https://www.edmundoptics.fr/p/25mm-dia-x-75mm-fl-mgfsub2sub-coated-achromatic-doublet-lens/2287/</a></td></tr><tr><td>Mirror</td><td>Edmund #46-716 - 23x16x5mm</td><td><a href="https://www.edmundoptics.fr/p/16-x-23mm-uv-enhanced-aluminum-lambda4-mirror/7050/">https://www.edmundoptics.fr/p/16-x-23mm-uv-enhanced-aluminum-lambda4-mirror/7050/</a></td></tr><tr><td>Plane holographic reflection grating</td><td>Edmund #15-755 - 2400 l/mm - 25x25mm</td><td><a href="https://www.edmundoptics.fr/p/2400-grooves-25x25mm-200-800nm-holographic-high-performance-reflection-grating/43683/">https://www.edmundoptics.fr/p/2400-grooves-25x25mm-200-800nm-holographic-high-performance-reflection-grating/43683/</a></td></tr><tr><td>Neutral density 1.25" filter</td><td>SV139 - 1.25inch - ND 0.9</td><td><a href="https://www.svbony.com/sv139-nd-filter/#W9108B">https://www.svbony.com/sv139-nd-filter/#W9108B</a></td></tr><tr><td>Slit</td><td>Sol’Ex / SUNSCAN 2 positions 7 – 10 µm (GEN2)</td><td><a href="https://www.shelyak.com/produit/fente-solex-sunscan-2-positions-7-10-%c2%b5m-gen2/">https://www.shelyak.com/produit/fente-solex-sunscan-2-positions-7-10-%c2%b5m-gen2/</a></td></tr></tbody></table>

### **Kit optique - Shelyak**

Shelyak propose un kit qui inclut toutes les optiques nécessaires, pré-sélectionnées et prêtes à assembler. Cette option est idéale pour ceux qui souhaitent minimiser le risque d’erreur et garantir la compatibilité de tous les composants.

<https://www.shelyak.com/produit/kit-optique-pour-spectroheliographe-sunscan/>

Contenu du kit Shelyak :

* Toutes les lentilles et le miroir nécessaires
* Réseau holographique pour la dispersion de la lumière
* Fente deux positions (7 et 10 microns)

<figure><img src="/files/xiRbWfqI0HegTM9jGlM3" alt="" width="374"><figcaption></figcaption></figure>

***


# Mécanique

Cette section décrit les composants mécaniques nécessaires à l’assemblage du projet. Ces pièces sont essentielles pour le montage et le réglage des différents éléments du système. Tous les composants mécaniques peuvent être achetés individuellement auprès de divers fournisseurs, offrant ainsi une flexibilité. Les marques et modèles recommandés ont été indiqués afin d’assurer la compatibilité et de faciliter l’assemblage.

Pour plus de praticité, un kit mécanique complet est disponible à l’achat chez Azur3DPrint. Il inclut toutes les pièces imprimées en 3D, les vis, inserts et autres composants nécessaires à l’assemblage. Ce kit garantit une compatibilité totale et facilite le montage en rassemblant tout le matériel en un seul pack. Vous pouvez le commander en un clic [ici](https://azur3dprintshop.com/201-SUNSCAN-STAROS.html)

<figure><img src="/files/HmbrGJ07scayozvQ1a17" alt="" width="200"><figcaption></figcaption></figure>

| Name                          | Ref                                                                               | Link                                                                                                            |
| ----------------------------- | --------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------- |
| Helical focuser               | SV161 1.25inch Double Helical Micro Focuser for Telescope Guide Scope Metal Black | <https://www.svbony.com/sv161-double-helical-focuser-for-telescope/>                                            |
| Soldering tips                | Ruthex Soldering Tips                                                             | <https://www.amazon.fr/ruthex-pointes-souder-daide-fusion/dp/B0CDBSGSXY/ref=asc_df_B0CDBSGSXY/>                 |
| M2 (or #2-56) threaded insert | Ruthex M2 (or #2-56)                                                              | <https://www.amazon.fr/ruthex-Insert-filet%C3%A9-pi%C3%A8ces-dimprimante/dp/B088QJG676/ref=asc_df_B088QJG676/?> |
| M3 (or #4-40) threaded insert | Ruthex M3 (or #4-40)                                                              | <https://www.amazon.fr/dp/B08BCRZZS3/ref=sr_1_1_sspa>                                                           |
| M4 (or #8-32) threaded insert | Ruthex M4 (or #8-32)                                                              | <https://www.amazon.fr/dp/B07YSV66Y5/ref=sr_1_1_sspa>                                                           |
| 1/4inch threaded insert       | Ruthex 1/4inch (Kodak)                                                            | <https://www.amazon.fr/dp/B09MTS6ZZQ/ref=sr_1_1_sspa>                                                           |
| M4 Hex Socket Cap Screw       |                                                                                   | <https://www.amazon.fr/-/en/gp/product/B0CY2CY7CY/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1>              |
| M3 Hex Socket Cap Screw       |                                                                                   | <https://www.amazon.fr/-/en/gp/product/B0CY298Q67/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1>               |
| M2 Hex Socket Cap Screw       |                                                                                   | <https://www.amazon.fr/-/en/dp/B0C1BLSBLW/ref=sr_1_8>                                                           |
| 1/4" - 20 Screw               |                                                                                   | <https://www.amazon.fr/-/en/gp/product/B01AZ558WE/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1>              |

### Optional Mechanical Parts

| Name     | Ref                   | Link                                                                                      |
| -------- | --------------------- | ----------------------------------------------------------------------------------------- |
| AZ Mount | SkyWatcher AZ Pronto  | <https://www.astroshop.de/fr/alt-azimut-sans-goto/monture-skywatcher-az-pronto/p,82104>   |
| Tripod   | Vaonis vespera tripod | <https://www.astroshop.de/fr/pieds-supports/vaonis-trepied-reglable-pour-vespera/p,76569> |


# Électronique

Cette section couvre les composants électroniques essentiels requis pour votre Sunscan. Ces composants fournissent les capacités de calcul, d'alimentation et d'imagerie nécessaires au système.

| Component                                                         | Link                                                                                                                                 |
| ----------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------ |
| Raspberry Pi 4B - 4 Go                                            | <https://www.kubii.com/fr/cartes-nano-ordinateurs/2772-nouveau-raspberry-pi-4-modele-b-4gb-kubii-5056561800349.html?src=raspberrypi> |
| Active Cooler (GeeekPi 3510 Version Cooling Kit)                  | <https://www.amazon.fr/-/en/gp/product/B07JGNF5F8/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1>                                   |
| Micro SD Card 128 Go Class 10 U3 V30                              | <https://www.amazon.fr/-/en/dp/B09X7DNF6G/ref=sr_1_6>                                                                                |
| Pisugar 3 Plus Portable 5000 mAh UPS Lithium Battery Power Module | <https://www.amazon.fr/-/en/dp/B09QRS666Y/ref=sr_1_4>                                                                                |
| Official Camera HQ -  C to CS Mount (IMX477 sensor)               | <https://www.kubii.com/en/cameras-sensors/2950-official-hq-camera-c-to-cs-mount-5056561800127.html>                                  |
| Official Power Supply for Raspberry Pi 4 15.3W USB-C              | <https://www.kubii.com/en/power-supplies/2678-1050-official-power-supply-for-raspberry-pi-4-153w-usb-c-3272496300002.html>           |

{% hint style="warning" %}
**Avertissement :** Les câbles plats CSI de la caméra sont des composants délicats et doivent être manipulés avec soin pour éviter tout dommage. Une mauvaise manipulation peut entraîner un dysfonctionnement de ces câbles. Si vous avez besoin d'un câble de remplacement, des options abordables sont disponibles [ici](https://www.kubii.com/fr/nappes-cables-adaptateurs-audio/432-31-nappe-cable-pour-raspberry-pi-camera-kubii-3272496001411.html#/dimensions-200mm_x_16mm_8_x_06).
{% endhint %}


# Impression 3D

v2.1.1 (2025-10-29)

Pour fabriquer votre propre SUNSCAN, vous devez disposer d'une imprimante 3D, de filament PETG noir et d'un fer à souder. Le PETG noir est essentiel car il offre à la fois la rigidité requise pour des pièces durables et fonctionnelles et l'opacité nécessaire pour bloquer la lumière infrarouge. Le fer à souder sera nécessaire pour insérer correctement les inserts métalliques dans les pièces imprimées en 3D, afin de garantir une connexion solide et fiable. Ne vous souciez pas d'être un expert de l'impression 3D : une connaissance de base de l'impression 3D est suffisante, et il existe de nombreuses ressources et un soutien communautaire pour vous guider tout au long du processus.

Sur cette page, vous trouverez tous les fichiers STL nécessaires à l'impression d'un SUNSCAN. Les images vous permettent de voir à quoi ressemblent les pièces.

Pour plus de praticité, un kit mécanique complet est disponible à l’achat chez Azur3DPrint. Il inclut toutes les pièces imprimées en 3D, les vis, inserts et autres composants nécessaires à l’assemblage. Ce kit garantit une compatibilité totale et facilite le montage en rassemblant tout le matériel en un seul pack. Vous pouvez le commander en un clic [ici](https://azur3dprintshop.com/201-SUNSCAN-STAROS.html)

<figure><img src="/files/HmbrGJ07scayozvQ1a17" alt="" width="200"><figcaption></figcaption></figure>

{% hint style="danger" %}
**Orientation** : Veillez à orienter la pièce sur le plateau de votre imprimante 3D du bon côté. Le côté surligné en orange sur les visuels doit être sur le plateau.
{% endhint %}

{% hint style="info" %}
**Remplissage** : pour toutes les parties, un remplissage de 15 % à l'aide d'une grille est suffisant.
{% endhint %}

## Sunscan

<table data-full-width="false"><thead><tr><th width="291" data-type="files">File (ref-version-name.stl)</th><th width="68" data-type="number">Qty</th><th width="108">Accuracy</th><th>Image</th><th data-hidden>Comments</th></tr></thead><tbody><tr><td><a href="/files/DNU82PUfd6eNmZGu10Ai">/files/DNU82PUfd6eNmZGu10Ai</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/LQfsMV5UfDKMcKUWzU6H" alt="" data-size="original"></td><td><ul><li>7x M4x8.1 Ruthex Insert</li><li>1x M3x5.7 Rhutex Insert</li><li>7x M4x30 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/nKvN2F8gMWjjLlFLW3Lk">/files/nKvN2F8gMWjjLlFLW3Lk</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/TU5thvLX7BFoWLYPgxwP" alt="" data-size="original"></td><td><ul><li>20x M4x8.1 Ruthex Insert</li><li>2x 1/4inch Ruthex insert</li></ul></td></tr><tr><td><a href="/files/MjdPHeqzxK5h5YVqV2Gk">/files/MjdPHeqzxK5h5YVqV2Gk</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/iEPnF7AFBxYceSEj9c05" alt="" data-size="original"></td><td><ul><li>4x M4x12 Hex Socket Cap Screw</li><li>1x M4x8.1 Ruthex Insert</li><li>1x M4x20Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/e0WOX2vTMJEajIVYwehb">/files/e0WOX2vTMJEajIVYwehb</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/CKEFpeBaZKnGiOWYMAL5" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/xHOSc9h6iqfePox1y3We">/files/xHOSc9h6iqfePox1y3We</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/piYJCtT9zvbQKIBMxBEX" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/XLfYgl3HQMKc2zalZgZs">/files/XLfYgl3HQMKc2zalZgZs</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/BNPMJ7UrnQQB5TDTUsTC" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/XmVtSvotkTnxmskFovpC">/files/XmVtSvotkTnxmskFovpC</a></td><td>2</td><td>0.16 mm</td><td><img src="/files/UrFdGFexaQ19nqu9373M" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/lUjNf23wDeMbh9me5sVv">/files/lUjNf23wDeMbh9me5sVv</a></td><td>2</td><td>0.16 mm</td><td><img src="/files/52R5o47IkrKcIh1mxUDy" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/9nNG4C3u2iGvNsVNhVBk">/files/9nNG4C3u2iGvNsVNhVBk</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/gpD8G9eiUlnCE9n136Wh" alt="" data-size="original"></td><td><ul><li>3x M3x5.7 Ruthex Insert</li><li>1x M4x12 Hex Socket Cap Screw</li><li>1x M3x10 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/ctz4NSekyAVJZyv2wAHQ">/files/ctz4NSekyAVJZyv2wAHQ</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/C5dZfH81gxXnOVsanoAy" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/CXtoHn6CICwDb2cLifWq">/files/CXtoHn6CICwDb2cLifWq</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/gvPr3LBQgL2pLHe0jDja" alt="" data-size="original"></td><td><ul><li>4x M4x8 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/2xWSm1waHRBEWN7CGxx1">/files/2xWSm1waHRBEWN7CGxx1</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/Qn1ZaqawDURAdhylkNib" alt="" data-size="original"></td><td><ul><li>1x M3x5.7 Rhutex Insert</li><li>2x M4x12 Hex Socket Cap Screw</li><li>1x M3x10 Hex socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/JurIlrPuKVjVV3ljGod1">/files/JurIlrPuKVjVV3ljGod1</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/GWkETSmZxhkfDTLLkJzL" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/eEouJcLIDTBm9mcWZHK7">/files/eEouJcLIDTBm9mcWZHK7</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/66iMkEo4ablYQLW8l0IV" alt="" data-size="original"></td><td><ul><li>4x M4x20 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/4Shf3Qy6P0KntgT4orwb">/files/4Shf3Qy6P0KntgT4orwb</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/er6FvsHurpsI6S9pPmh1" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/lRgQDI6jy4NeQgW0KhvH">/files/lRgQDI6jy4NeQgW0KhvH</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/hjvFNbLyZx9EVtX9JOS5" alt="" data-size="original"></td><td><ul><li>1x M4x20 Hex Socket Cap screw</li><li>1x M4 Nuts</li></ul></td></tr><tr><td><a href="/files/fzbQFKugI1yWxMedLDf0">/files/fzbQFKugI1yWxMedLDf0</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/E0upCya7kbKJWgorl4fI" alt="" data-size="original"></td><td><ul><li>1x M3x10 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/EeGMKy7zUnknRhKGQbv2">/files/EeGMKy7zUnknRhKGQbv2</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/JqlSHhNXnn2zDqH7rvyw" alt="" data-size="original"></td><td><ul><li>2x M3x5.7 Rhutex Insert</li><li>2x M3x16 Hex Socket Cap Screw</li><li>2x M4x20 Hex Socket Cap screw</li><li>2x M4 washers</li></ul></td></tr><tr><td><a href="/files/m2eKZ2OA3ehmBoqiaY7D">/files/m2eKZ2OA3ehmBoqiaY7D</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/8Ke4cMYylRpzNSEEW3Vh" alt="" data-size="original"></td><td><ul><li>2x M3x16 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/wpUKYjOmbxixzuSN0APX">/files/wpUKYjOmbxixzuSN0APX</a></td><td>1</td><td>0.16 mm</td><td><img src="/files/BGZ3u3iIKF4W93uSY3cH" alt="" data-size="original"></td><td></td></tr><tr><td><a href="/files/6mtgAaOM4shJ7CUQL9Dx">/files/6mtgAaOM4shJ7CUQL9Dx</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/ib4I4OxA4UBA1k2Crvam" alt="" data-size="original"></td><td><ul><li>1x M3x5.7 Ruthex Insert</li><li>1x M3x6 Hex Socket Cap Screw</li></ul></td></tr><tr><td><a href="/files/92aV5vqV32ZlBpmik403">/files/92aV5vqV32ZlBpmik403</a></td><td>1</td><td>0.20 mm</td><td><img src="/files/cR8vMuaOzcNazb04hWnY" alt="" data-size="original"></td><td></td></tr></tbody></table>

## Camera case

<table data-full-width="false"><thead><tr><th width="331" data-type="files">File (ref-version-name.stl)</th><th width="105">Accuracy</th><th width="250">Image</th><th data-hidden>Comments</th></tr></thead><tbody><tr><td><a href="/files/qTr4rhjor4pqriL5nPaK">/files/qTr4rhjor4pqriL5nPaK</a></td><td>0.20 mm</td><td><img src="/files/Na1l08kH61PKungpKnAG" alt="" data-size="original"></td><td>-</td></tr><tr><td><a href="/files/HOnBujVyz2LOyoH2r7c9">/files/HOnBujVyz2LOyoH2r7c9</a></td><td>0.20 mm</td><td><img src="/files/JbNFe0P9r9eSG4gZ0wpW" alt="" data-size="original"></td><td><ul><li>4x M2x10 screw</li></ul></td></tr><tr><td><a href="/files/j07EI9KSzNpMRyGoVdFh">/files/j07EI9KSzNpMRyGoVdFh</a></td><td>0.16 mm</td><td><img src="/files/litzkl16LR59YuTZ63eh" alt="" data-size="original"></td><td></td></tr></tbody></table>

## Raspberry Pi case&#x20;

<table data-full-width="false"><thead><tr><th width="389" data-type="files">File (ref-version-name.stl)</th><th width="107">Accuracy</th><th width="193">Image</th><th data-hidden>Ref</th></tr></thead><tbody><tr><td><a href="/files/okvL95XGU7ZXJONZXnDJ">/files/okvL95XGU7ZXJONZXnDJ</a></td><td>0.20 mm</td><td><div><figure><img src="/files/oLwQpxxVXcxnigZd0kcq" alt=""><figcaption></figcaption></figure></div></td><td>25-4-bottom-RPI4-case</td></tr><tr><td><a href="/files/fb2g2po2KDJW8dWM1f8y">/files/fb2g2po2KDJW8dWM1f8y</a></td><td>0.20 mm</td><td><p></p><p><img src="/files/KIobgceqnsONKDSPmTFy" alt="" data-size="original"></p></td><td>26-4-top-RPI4-case</td></tr><tr><td><a href="/files/L9fYJ3v5wVCsarMPEYhW">/files/L9fYJ3v5wVCsarMPEYhW</a></td><td>0.16 mm</td><td></td><td>27-8-RPI4-button</td></tr></tbody></table>


# 1. Instructions de montage

v1.6.2 - 18/11/2025

Cette page propose un guide clair et convivial pour l'assemblage de votre projet SUNSCAN. Les instructions sont fournies sous la forme d'un PDF téléchargeable avec des illustrations étape par étape et des directives faciles à suivre. Que vous soyez un bricoleur chevronné ou un novice en matière d'assemblage, ce guide simplifie le processus, en veillant à ce que chaque composant soit assemblé correctement et efficacement. Avec un minimum de texte et des repères visuels directs, il garantit une expérience sans tracas, ce qui le rend accessible à tous. Réalisez votre projet SUNSCAN en un rien de temps grâce à notre guide d'assemblage intuitif et sans frustration.

{% file src="/files/c4UOu3NFV3oSHybdfKfj" %}

<figure><img src="/files/NS9bx9wkUg9so2ShjKcI" alt=""><figcaption></figcaption></figure>


# 2. Installation du Sunscan OS

Votre Raspberry Pi a besoin d'un système d'exploitation pour fonctionner. Le voici. **Sunscan OS** est notre système d'exploitation officiel.

## 1 - Installation du Raspberry Pi Imager

{% embed url="<https://www.raspberrypi.com/software/>" %}

<figure><img src="/files/cTUzSndJTYS8uj1xI42C" alt=""><figcaption></figcaption></figure>

## 2 - Télécharger l'OS Sunscan

{% embed url="<https://drive.google.com/file/d/1ktJRJT5SZf5DjDA105eazF1z6UuYk5wX/view?usp=sharing>" %}

## 3 - Installatiion sur  MicroSD (reco 128 Go)

* Insérez la carte micro SD dans un lecteur connecté à votre ordinateur.&#x20;
* Lancez RPI Imager Cliquez sur « Choose Device » et sélectionnez Raspberry Pi 4 B+
* Cliquez sur « Choose OS » et sélectionnez « Use Custom ».&#x20;
* Choisissez l'image « sunscan-os-xxx.img.xz » téléchargée précédemment&#x20;
* Cliquez sur « Choose storage » et sélectionnez votre carte SD (taille d'environ 128 Gb)

{% hint style="danger" %}
Vérifiez à nouveau cette étape et choisissez le bon appareil pour éviter de vider un autre appareil de stockage !
{% endhint %}

* Cliquez sur « Suivant » Puis cliquez sur « Non » pour la personnalisation&#x20;
* Cliquez ensuite sur « Oui » pour lancer l'installation.
* Et maintenant, attendez... c'est long, jusqu'à plusieurs minutes en comptant la phase de vérification !

## 4 - Installez l'application mobile "Sunscan"

<table data-view="cards"><thead><tr><th></th></tr></thead><tbody><tr><td><img src="/files/dlNpglY0044G969Q7wIx" alt="" data-size="original"></td></tr><tr><td><img src="/files/5snoSdqWW69qTSs4DGSs" alt="" data-size="original"></td></tr></tbody></table>

## 5 - Se connecter à Sunscan

* Allumez le sunscan : appuyez brièvement sur le bouton d'alimentation (cliquez).
* Attendez une minute, puis le réseau wifi « sunscan-\*\*\* » devrait apparaître sur votre mobile.
* Connectez-vous à ce réseau wifi avec le mot de passe « SunScanByStaros »
* Lancez ensuite l'application SUNSCAN 🙂


# 3. Configurer et ajuster

Cette page fournit un guide clair et convivial pour le réglage de votre système SUNSCAN. Les instructions sont disponibles sous forme de PDF téléchargeable, avec des illustrations étape par étape et des directives simples. Que vous soyez expérimenté ou novice en matière de réglages, ce guide permet de s'assurer que chaque paramètre est ajusté correctement pour une performance optimale.

{% file src="/files/YDDFFj2KqJ2Qb0jnweh0" %}

<figure><img src="/files/5WIrSpgMJLlXQYL7d408" alt=""><figcaption></figcaption></figure>


# Prepare

<figure><img src="/files/9A2l55Ipk6wCWAjJyE0i" alt=""><figcaption></figcaption></figure>


# Mobile application

<figure><img src="/files/TiKBEb0Mzv9afwvoyZez" alt=""><figcaption></figcaption></figure>


# Setup

<figure><img src="/files/SBKUnbOOr9jrR8gC2qMn" alt=""><figcaption></figcaption></figure>


# Mobile app overview

Our mobile application, available for both Android and iOS, allows you to easily take control of the SUNSCAN instrument and perform solar scans. Below is a brief overview of the key screens and features that make it easy to operate SUNSCAN and manage your data.

## 1. Home Screen

The home screen displays the connection status between the app and the SUNSCAN device. To connect, ensure that SUNSCAN is powered on and that your phone is connected to the Wi-Fi network "sunscan-\*\*\*\*\*\*". Once the connection is successful, the status indicator will turn green, allowing you to connect the camera and begin capturing solar scans.

Additionally, basic solar ephemeris (such as sunrise, sunset, and solar position data) will also be displayed on this screen, providing useful contextual information for your scans.

<figure><img src="/files/LaVUi9LQb2IQSaXeRG5n" alt=""><figcaption></figcaption></figure>

## 2. Scan Screen

On this screen, you can capture videos that will be used to generate your solar images. When the camera is connected, a toolbar appears with the following options:

* **Color Button**: Displays the image in color mode. In this mode, the camera is set to automatic exposure.
* **Norm Button**: Activates normalization. \
  Two types of normalization are available: Min/Max and N-th percentile.
* **Adjust Button**: Provides access to advanced settings (discussed further below).
* **Grid Button**: Toggles a grid display to help with alignment and adjustments.

On the right side of the screen, there is a "Crop" button that lets you adjust the framing of the image by moving the crop area up or down. Once framed, you can start recording a solar scan by pressing the designated record button.

<figure><img src="/files/NxHdbmFH21Z4D89zYAnB" alt=""><figcaption></figcaption></figure>

### **Advanced Settings**

This panel allows you to manually adjust the camera’s exposure and gain. Three exposure modes are available:

* **Default Mode**: Ranges from 20 ms to 160 s.
* **SE (Short Exposure) Mode**: From 0.1 ms to 20 ms.
* **LP (Long Exposure) Mode**: From 0.2 s to 30 s.

To switch between modes, press and hold the "EXP" button. The "Max ADU" section displays the 12-bit ADU values for each color channel (R, G, B). A single tap on any channel (red, green, or blue) allows you to select only that specific channel for display.

<figure><img src="/files/DrYTNgvmqzl0CmLGqzGT" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
For best results \
\- Use a low gain setting (e.g., 1 dB).\
\- When capturing the Sun in H-alpha wavelength, work exclusively with the red channel.\
\- Avoid overexposing or underexposing your images. A smiley icon will indicate whether your exposure settings are optimal. Note that this indicator is provided for general guidance and covers the most common scenarios.
{% endhint %}

## 3. Gallery Screen

This screen lets you manage your solar images. From here, you can start image processing, view your images, download them to your device, or delete them if needed.

<figure><img src="/files/KCsOUqBXIijHGiZN3x36" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/KQlmJp6z0yUmOcvR7r0x" alt=""><figcaption></figcaption></figure>

## 4. Settings Screen

The settings screen provides access to various configuration options, including changing the app's language.

With these simple and intuitive controls, the SUNSCAN mobile app, available on Android and iOS, makes it easy to perform high-quality solar scans and manage your data directly from your phone. Plus, with internet connectivity, you can view basic solar ephemerides on the home screen, giving you valuable solar information at a glance.

<figure><img src="/files/BekCYfWZJ0t5fXswmBHt" alt=""><figcaption></figcaption></figure>


# Nouveautés de la version 1.3

2025-03-06

## 🌟 **Nouveau mode d'édition multiple**

Vous pouvez désormais effectuer des actions sur plusieurs scans en une seule opération. Par exemple, supprimer plusieurs scans à la fois. Deux façons d'y accéder : soit un appui long sur un scan ou bien le bouton molette en haut à droite de l'écran.

{% embed url="<https://youtu.be/tgcykE9fSJ0>" %}

## 🎞️ **Créer des animations GIF**

Avec le mode d'édition multiple, il est possible de générer des animations GIF à partir de vos images solaires. Une nouvelle manière de partager vos observations !

{% embed url="<https://youtu.be/prp4D3nwaBg>" %}

## ➕ **Additionner vos images pour de meilleurs résultats**

Le stacking est désormais disponible : combinez plusieurs images pour améliorer le rapport signal/bruit et réduire les effets liés à la turbulence atmosphérique. Plus qu'une simple addition SUNSCAN intègre un algorithme avancé permettant de corriger simultanément les déformations locales de l'image h-alpha ou autre et de les appliquer automatiquement sur l'image continuum !

{% embed url="<https://youtu.be/dUCy_tk8nTo>" %}

## 🔍 **Nouveau système de zoom/déplacement**

Un système de zoom et déplacement (pan/zoom) plus fluide est disponible, offrant une meilleure expérience utilisateur, notamment sur iOS.

{% embed url="<https://youtu.be/EqXK5kh5qwU>" %}

## 🌞 **Amélioration des éclipses artificielles**

Pour une meilleure visualisation des protubérances solaires, nous avons ajouté :

* Un antialiasing pour un masque noir plus lisse.
* Une nouvelle fonctionnalité d’éclipse Doppler.

## 🏷️ **Système de tags pour vos scans**

À la fin d’un scan solaire, vous pouvez indiquer la raie observée. Cela permet de coloriser correctement les images en post-traitement.&#x20;

<figure><img src="/files/uF4q18R4ULCsnoAk6zsm" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/awzrHfoscaAIQcIUouwl" alt=""><figcaption></figcaption></figure>

## 🪐 **Traitement hélium**

Si vous scannez la raie de l’hélium se trouvant à proximité du doublet du sodium et que votre scan est correctement tagué, un traitement dédié est appliqué pour générer une image optimale. Ce traitement est aussi disponible dans le panneau de traitement avancé.

<figure><img src="/files/wtna8mXUpc7V6SmpMVX6" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/lXaw7G56jpaAKypbMq0H" alt=""><figcaption></figcaption></figure>

## 💧 **Ajout d’un watermark SUNSCAN (optionnel)**

Une option dans les paramètres vous permet d’ajouter un filigrane avec le logo SUNSCAN, le nom de l’observateur (si renseigné), l’heure du scan, et des infos sur la raie observée.

## 📏 **Calcul du FWHM**&#x20;

Un nouvel outil de calcul du FWHM a été intégré pour faciliter le réglage de SUNSCAN à l’ordre zéro.&#x20;

{% embed url="<https://youtu.be/8doFc8ULF7Y>" %}

## :desktop: Nouvelle version de l'application sunscan.local

L'application permettant de récupérer vos données sur votre ordinateur à été complétement repensée.\
Elle permet maintenant de :&#x20;

* Visionner les fichier de stacking
* Visionner les fichiers d’animations
* Faire des sélections multiple de dossier de scan pour download ou suppression
* Même chose pour stacking et animations
* Zoom +/- des vignettes images dans un dossier de scan
* Affichage des valeurs de stockage (espace restant/total)
* Evolution de l’affichage d’une image avec quelques contrôles (zoom, rotation)
* Quelques petits optimisation de design

## 🐛 **Corrections de bugs mineurs**

Résolution de divers bugs pour améliorer la stabilité et la fluidité.


# Nouveautés de la version 1.4

2025-11-01

* **Mise à jour du cœur de l’application** et de toutes les dépendances pour répondre aux nouvelles exigences Android (API cible Google Play).
* **Amélioration de la fonction d’enregistrement** des images sur smartphone ou tablette.
* **Correction de plusieurs bugs** dans l’application et dans le firmware **SUNSCAN OS** sur le **RPI4**.
* **Optimisation des performances** : la fenêtre d’acquisition est désormais plus haute, facilitant notamment les acquisitions sur la raie de l’hélium.
* **Amélioration du panneau d’éphémérides** : lorsque l’application est lancée sans connexion au Wi-Fi SUNSCAN, elle utilise les données GPS et les enregistre pour les sessions suivantes. Cela permet d’afficher le panneau d’éphémérides même lors d’un démarrage connecté à SUNSCAN.
* **Nouvelle vue en négatif** sur la raie **H-alpha**.

<figure><img src="/files/Kv6LIgvDUoPyAFGhk4Qg" alt=""><figcaption></figcaption></figure>

* **Nouveau mode de couleur** pour les images Doppler : choix entre **Orange-Bleu** et **Rouge-Bleu**.\
  Les images Doppler ne sont plus calculées par défaut. Un bouton permet d'activer ou non cette image lors du traitement avancé.&#x20;

<figure><img src="/files/QkMyEunJwPKaoe0efYiy" alt=""><figcaption></figcaption></figure>

* **Animation des scans** désormais disponible sur les **images stackées**.

<div><figure><img src="/files/kLkBOrmpGJq1OelwAMSv" alt=""><figcaption></figcaption></figure> <figure><img src="/files/MqeAJ6RQoWc1inr8gBLG" alt=""><figcaption></figcaption></figure></div>

* **Calcul de l’image continuum** désormais effectué par défaut — plus besoin d'ouvrir le mode avancé.
* **Nouvelle langue disponible : espagnol.**
* **Nouvelle option d’orientation de l’écran caméra** : possibilité de choisir entre **caméra à droite**, **caméra à gauche**, ou **mode automatique** en fonction de la position du téléphone.

<figure><img src="/files/O2U5Y32NfpBE22Q5wSxT" alt=""><figcaption></figcaption></figure>

#### **Fonctionnalités expérimentales**

* **Nouvelle aide à la mise au point** : affichage d’un score de netteté pour faciliter le focus sur les bords du soleil. Cette fonctionnalité sera très probablement améliorée dans les prochaines versions.

  Le système calcule un score en moyenne glissante basé sur la pente des deux bords du soleil détectés.\
  Pour obtenir des mesures fiables :

  * Centrez le soleil horizontalement et maximisez sa largeur.
  * Évitez de modifier le temps de pose durant cette phase, car le score dépend du contraste entre le fond de ciel et le continuum.

<figure><img src="/files/Ll26PzLGuceUN4Mn2uod" alt=""><figcaption></figcaption></figure>

* **Nouveau mode 3D** : visualisation du soleil sous forme de **globe 3D**, avec rotation et zoom via les mouvements du smartphone. Ce mode est pour l’instant principalement expérimental, mais l’intégration de mécanismes de projection et de rendu 3D ouvre la voie à des évolutions bien plus avancées dans les prochaines versions.

{% embed url="<https://youtu.be/ZaY8VRacrfQ>" %}


# Observer

{% embed url="<https://www.youtube.com/watch?v=FwUWHPA-M34>" %}


# Le soleil en Hα

This guide provides step-by-step instructions for performing Hα solar observations using the SUNSCAN system.

<figure><img src="/files/aaSBYBZMG2YttF6zMzdR" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
The **Hα line** reveals a detailed view of the Sun's chromosphere, the layer just above the Sun’s surface. When observing in **Hα**, we can see features like solar prominences, filaments, sunspots, and plages, which are active regions on the Sun’s surface. This specific wavelength of light, at 656.3 nanometers, is emitted by hydrogen atoms and highlights areas of intense magnetic activity. Observing the Sun in the H-alpha line allows us to capture dynamic solar phenomena, such as flares and eruptions !
{% endhint %}

### Prerequisites

Before starting, ensure you've completed the configuration and adjustment steps outlined here: [Sunscan Configuration and Adjustment](https://www.sunscan.net/build/3.-configure-and-adjust).&#x20;

{% embed url="<https://www.youtube.com/watch?v=FwUWHPA-M34>" %}

### Observation Steps

* **Power on** SUNSCAN\
  Turn on the Sunscan system.
* **Connect to** SUNSCAN **Wi-Fi**\
  Using the mobile application, connect to the SUNSCAN Wi-Fi network.
* **Connect the Camera**\
  In the app, tap the "Connect the Camera" button.
* **Align the Telescope with the Sun**\
  Use the pinhole sight to point the telescope at the Sun.

<figure><img src="/files/966ajko5K2g64IJFcudA" alt="" width="563"><figcaption></figcaption></figure>

* **Fine-tune the Sun’s Position**\
  On the scanning page, refine the Sun's centering within the field of view.
* **Verify H-alpha Positioning**\
  Ensure that you are centered on the Sun and that the H-alpha line is roughly centered vertically.

<figure><img src="/files/dCsjPvKy57haC4p23QaU" alt=""><figcaption></figcaption></figure>

* **Optimize Focusing**\
  Adjust the focus both on the camera side and the telescope side for optimal clarity.
* **Crop the Image**\
  Crop the image to the desired frame for your observation.
* **Prepare for Solar Motion**\
  Move the telescope slightly so the Sun is just outside the sensor's view. Be mindful of the Sun's motion so it will move across the sensor during the scan.
* **Start the Capture**\
  After positioning the Sun just outside the sensor, begin the capture and wait a few minutes as the Sun moves across the sensor. Allow a few additional seconds after the Sun has crossed to capture any solar prominences, then stop the acquisition.
* **Process the Scan**\
  Go to the gallery, tap the thumbnail of your scan to start the reconstruction of the solar disk.
* **Admire Your Images**\
  View your reconstructed solar images.
* **Advanced processing (Continuum and Doppler)**\
  To apply additional processing, such as continuum or Doppler images, click the small gear icons.
* **View Scan Information and log**\
  Click the small "i" icon to see detailed information about your scan.


# Cartes mémo

Ces cartes de référence imprimables sont conçues pour aider les observateurs à identifier rapidement les raies spectrales et configurer les paramètres de SUNSCAN pour des résultats optimaux. Chaque carte correspond au format standard d'une carte bancaire.

{% file src="/files/YPDjR4ujjRnupoum2cKl" %}

{% hint style="info" %}
**Notes importantes :**

Les temps de pose et les valeurs de gain sont des **valeurs indicatives** et doivent être ajustés en fonction de :

* Les conditions de transparence du ciel
* Si la caméra Raspberry Pi HQ a été défiltrée ou non
* Les conditions de seeing atmosphérique local
  {% endhint %}

<figure><img src="/files/h9UGqr1A6BLi8s0x4rQ7" alt=""><figcaption></figcaption></figure>


# Colored sun spectrum

SUNSCAN offers a unique observational experience by allowing users to visualize the Sun's spectrum in full color, revealing it in a whole new light. With its integrated color sensor, the instrument displays the solar spectrum with exceptional precision. This capability lets users distinguish the Sun's natural spectral colors in high resolution, showcasing the vivid range from deep reds through greens to violets.

Beyond colors, SUNSCAN reveals thousands of absorption lines, each corresponding to specific elements in the Sun’s atmosphere that absorb certain wavelengths. These dark lines, known as Fraunhofer lines, represent a detailed chemical fingerprint of the Sun, allowing enthusiasts and scientists alike to explore solar composition and activity.&#x20;

<figure><img src="/files/QIMjzivO4ljkYGhvpz7R" alt=""><figcaption><p>Sodium D-lines</p></figcaption></figure>

To activate the color mode on SUNSCAN and start viewing the Sun’s spectrum in full color, follow these steps:

1. **Power on SUNSCAN**\
   Begin by turning on the SUNSCAN instrument using the power button.
2. **Connect to SUNSCAN Wi-Fi**\
   Open the SUNSCAN mobile app and connect to the SUNSCAN Wi-Fi network on your mobile device.
3. **Connect the Camera**\
   In the app, tap "Connect Camera" to establish a connection with the SUNSCAN camera.
4. **Enable Color Mode**\
   Navigate to the "Camera" section in the app, where you’ll find a button labeled "Color." Tap this button to activate color mode. When the mode is activated, the button will turn green, indicating that you are now in full-color mode.

Once activated, the color mode enables SUNSCAN to display the solar spectrum in vibrant colors !

<figure><img src="/files/PHXNtRGT5VuOfbDpNURG" alt=""><figcaption><p>Hβ line</p></figcaption></figure>

<figure><img src="/files/iymta2VWIynV4vnh1BkH" alt=""><figcaption><p>Ca II lines</p></figcaption></figure>

<figure><img src="/files/A2XS4aWGSZxmMVgx7HbX" alt=""><figcaption><p>Near IR telluric lines</p></figcaption></figure>


# Share


# Share your images


# Observe with your friends


# Retrieve your data

To retrieve data acquired by the SUNSCAN system, follow these simple steps. All the data collected is stored on the Raspberry Pi 4's microSD card, ensuring that it is easily accessible. To get started, ensure the SUNSCAN is powered on, next connect your laptop to the SUNSCAN's Wi-Fi network, identified as "sunscan-\*\*\*\*\*\*". Once connected, open a web browser and navigate to&#x20;

[**http://sunscan.local**](http://sunscan.local)

Here, you will be greeted with a minimalist interface designed for ease of use. The interface allows you to browse through all of your data effortlessly. You can download the raw scan data in PNG 16-bit format (file named "sunscan\_raw\.png") for high-quality image post processing. Additionally, all processed images are available for download in JPG format. If you need the original raw video, it is available in the SER format, a standard for astronomical video capturing. You can also consult detailed processing logs to track and review the data processing steps.

{% hint style="info" %}
This portal is not only designed for data access but is also useful for backing up your SUNSCAN data.
{% endhint %}

<figure><img src="/files/iQwtc6rNNkU4oozx5CIf" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/4g27z1cYhI3NtE6FQwc1" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/sueO1lP8KChydXs9IqAX" alt=""><figcaption></figcaption></figure>


# Contact / Besoin d'aide ?

{% hint style="success" %}
Rejoignez-nous sur le serveur Discord **SUNSCAN** ! 🌞 Que vous ayez des questions techniques sur le montage, les réglages ou l'utilisation de votre instrument, ou que vous souhaitiez partager vos premières images du Soleil, notre communauté passionnée est là pour vous aider et échanger avec vous. Venez discuter, apprendre et partager autour de votre passion pour l'observation solaire ! 🚀✨\
[https://discord.gg/TNGKj3cQmr](https://discord.com/invite/TNGKj3cQmr)
{% endhint %}

### Visitez notre site web

Vous trouverez toutes les informations nécessaires sur nos différents projets et actions sur notre site web Projets STAROS :

* <https://staros-projects.org>

### Abonnez-vous à notre newsletter

Pour recevoir les dernières nouvelles et mises à jour directement dans votre boîte de réception, inscrivez-vous à notre lettre d'information sur notre site :

* <https://staros-projects.org>

### Développement

Pour rester au courant des dernières nouvelles et des développements futurs du projet SUNSCAN, suivez-nous sur les plateformes suivantes :

* [GitHub](https://github.com/staros-projects)

### Mieux encore, aidez-nous !&#x20;

Le projet SUNSCAN est un effort communautaire. Nous sommes toujours à la recherche de contributeurs passionnés pour nous aider à améliorer et à développer le projet. Si vous souhaitez vous impliquer, rendez-vous à la page suivante :

* [Contribution page](/fr/a-propos/puis-je-aider)

En vous impliquant avec nous, vous pouvez non seulement vous tenir au courant des dernières nouvelles, mais aussi contribuer activement à l'évolution du projet Sunscan. :muscle:


# Puis-je aider?

Le projet Sunscan est une initiative open-source qui vous permet de participer à la création et à l'amélioration d'un spectrohéliographe unique. Nous sommes ravis de vous accueillir dans notre équipe et de bénéficier de vos compétences et de votre enthousiasme.

### Pourquoi contribuer?

Contribuer à un projet open-source comme Sunscan offre de nombreux avantages. Vous aurez l'occasion de développer vos compétences, d'apprendre de nouvelles choses et de faire partie d'une communauté dynamique et passionnée !

### Comment contribuer?

Il existe de nombreuses façons de contribuer au projet Sunscan. Vous pouvez apporter votre aide dans les domaines suivants :

* **Traductions**: Aidez-nous à rendre le projet accessible à un public plus large en traduisant notre documentation et notre site web.
* **Développement de logiciels**: Participez à l'amélioration et à l'extension des fonctionnalités de notre incroyable spectrohéliographe.
* **Communication**: Aidez-nous à promouvoir le projet Sunscan à travers les médias sociaux, les blogs et les événements.
* **Assistance aux utilisateurs**: Offrez votre aide et vos conseils aux utilisateurs qui ont des questions ou rencontrent des difficultés avec le Sunscan.

### Comment démarrer?

Pour commencer, nous vous invitons à consulter les dépôts de code où vous trouverez toutes les informations nécessaires pour contribuer :

* Sunscan backend repository : <https://github.com/staros-projects/sunscan-backend>
* Sunscan mobile app repository : <https://github.com/staros-projects/sunscan-app>

N'hésitez pas à nous contacter pour toute question ou pour discuter de vos idées à l'adresse de l'équipe : team AT staros-projects.org. Nous sommes impatients de vous accueillir pour travailler ensemble à rendre le projet Sunscan encore plus exceptionnel.

### Rejoignez-nous!

Le projet Sunscan est une aventure passionnante qui vous permet de combiner votre intérêt pour l'astronomie et votre désir de contribuer à un projet open-source. Nous sommes convaincus que votre participation sera précieuse et nous vous encourageons à nous rejoindre sans hésitation. Ensemble, nous pouvons créer quelque chose de vraiment spécial et faire progresser notre compréhension de l'univers.


# FAQ

Frequently Asked Question

Welcome to the Frequently Asked Questions section for the Sunscan project.&#x20;

Here you'll find answers to the most common questions about our SpectroHeliograph.If you can't find the answer to your question, please don't hesitate to contact our team at: <team@staros-projects.org>

Happy exploring!

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<summary><strong>If I already have a Raspberry Pi at home, can I use it?</strong></summary>

To ensure guaranteed operation and minimal cost, we've specified the use of a Raspberry Pi 4B with 4 GB RAM. If you have a different model (e.g., a Pi 4B 8 GB), it's likely to work similarly. You can try using it, however, we can't guarantee optimal performance compared to the intended uses. The Raspberry Pi 5, with its different architecture, hasn't been tested yet. We'll update the specifications as soon as we've conducted conclusive tests.

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<summary><strong>I have several Raspberry Pi cameras at home, can I use any camera of equivalent size?</strong></summary>

No, the camera we've selected meets specific qualitative criteria to provide a scientifically and visually acceptable result. It's not impossible that in the future, other cameras may be added to the list of compatible components.

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<summary><strong>Can I reuse the optical parts from my Sol'Ex to make a Sunscan?</strong></summary>

No, the Sunscan has been developed independently with a new optical design and therefore new specific optics.

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<summary><strong>I don't have a 3D printer, what can I do?</strong></summary>

No worries! We've partnered with companies that offer commercial 3D printing of the kit. These companies adhere to our specifications and ensure production quality that allows for building a quality Sunscan. You can find more information on the dedicated page of our website.

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<summary><strong>Is it possible to use the Sunscan without a smartphone?</strong></summary>

No, it is not possible to use the Sunscan without a smartphone or tablet. The Sunscan is designed as an all-in-one, autonomous, and portable device. Its operation is specifically intended to be used with a mobile device (smartphone or tablet) as the control interface. This design choice ensures a user-friendly experience and maintains the portability and independence of the system. The mobile app is an integral part of the Sunscan's functionality, providing the necessary controls and data visualization features for optimal use of the SpectroHeliograph.

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<summary><strong>Where can I find help if I encounter problems during the construction or use of my Sunscan?</strong></summary>

We've set up several resources to help you:

* Detailed documentation on our website
* Video tutorials to guide you step by step
* Email support for more specific question

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<summary><strong>Is there a Sunscan user community?</strong></summary>

Yes, an active community of Sunscan users regularly shares experiences, tips, and observations on the [Sol'Ex mailing list](https://groups.io/g/Solex-project). Feel free to join them to exchange and learn!

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<summary><strong>Can i used Sunscan without mobile phone or tablet ?</strong></summary>

No, Sunscan has been developed exclusively for use on mobiles and tablets. At this stage, no other use is planned.

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