> For the complete documentation index, see [llms.txt](https://www.sunscan.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://www.sunscan.net/use/share/integrations.md).

# Share your images

[SpectroSolHub](https://spectrosolhub.com) is the sharing platform of the spectroheliograph community. Your observations sit there alongside those of other observers. The platform is built and offered to the community free of charge by [Cédric Champeau](https://melix.github.io/blog/). Many thanks to him.

Since version 2.1, you upload your images to it straight from the app: open a processed scan, tick the images, publish. No computer involved.

{% embed url="<https://3365769115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2Fj8VBNLZ1OZic6lJdEMn0%2Fuploads%2FSQU00Frux0gtIGWSJDVi%2Fsunscan-2-1-v20-spectrosolhub-b.mp4?alt=media>" %}
From the gallery to a published observation on SpectroSolHub.
{% endembed %}

{% hint style="warning" %}
**Firmware 2.1 required.** Uploading to SpectroSolHub needs firmware 2.1 on the SUNSCAN. The app offers the update as soon as it detects a SUNSCAN that needs it, and the update stays available in the Settings.
{% endhint %}

## The SUNSCAN uploads, not your phone

This is the one thing to understand before anything else. The app only prepares the upload: the images leave from the SUNSCAN itself, straight to SpectroSolHub.

So **the SUNSCAN is what needs internet access**, not just your phone. That means connecting it to your home Wi-Fi.

* **On the SUNSCAN hotspot:** nothing can go out. The unit creates its own network, and that network leads nowhere but to the unit.
* **On a Wi-Fi network with no internet:** same thing.
* **Either way:** the app tells you. The cloud button is greyed out, and tapping it explains why and offers to connect the SUNSCAN to your Wi-Fi.

Joining your network is covered in [Setup](/use/editor/setup.md).

## Connect your account

Open the **Settings**, section **SpectroSolHub**, and enter your account credentials.

* **Two-factor authentication:** supported.
* **Your password:** never kept. The SUNSCAN exchanges it for an access token, which you can revoke at any time from your account on the website.
* **Your account:** the Settings also show the storage space and the number of images already used.

## Upload a scan

{% stepper %}
{% step %}

### Open the upload window

On the screen of a processed scan, tap the **cloud button**.
{% endstep %}

{% step %}

### Pick the images

Tick the images you want to send. The most useful ones are ticked already.
{% endstep %}

{% step %}

### Check the spectral line

It is pre-filled from the scan tag. Correct it if it does not match.
{% endstep %}

{% step %}

### Add a title and notes

Optional, but this is what makes an observation worth reading: sky conditions, instrument, what can be seen on the image.
{% endstep %}

{% step %}

### Publish, or keep it as a draft

Publish right away, or keep the observation as a draft and publish it later from the website.
{% endstep %}
{% endstepper %}

During the upload, a progress bar shows the current step and the image being sent. The video at the top of this page walks through the whole procedure.

You can close the window: the SUNSCAN carries on with the upload, and the app picks it up again as soon as you come back to the scan. A brief Wi-Fi drop does not fail the upload. When it is done, a button opens the observation on the website.

{% hint style="info" %}
Every upload creates a **new observation** on SpectroSolHub. The app warns you if the scan has already been uploaded.
{% endhint %}

## Upload a stack

The same cloud button is on the screen of a stack.

* **Stacks created with v2.1:** the date, the spectral line, the title and a note are pre-filled from the source scans. The date used is the mean time of the scans, the one written in the watermark, and the observer name is the one given when the stack was created.
* **Older stacks:** their folder only carries the creation date, not the date of the observation. The app therefore asks you for the date and time (UTC) of the observation. Both are pre-filled with the creation date of the stack, and the app displays the image whose watermark carries the date so that you can check it.

Uploading animations is not offered yet.

## Find your uploads and clean up

* **The cloud in the gallery:** uploaded scans and stacks carry a small cloud. Green if the observation has been published, grey if it stayed a draft.
* **Open the observation:** tap the cloud. "View on SpectroSolHub", in the "⋯" menu of the scan screen, does the same.
* **The "On SpectroSolHub" filter:** available in the scans tab and in the stacks tab, it shows only the items already uploaded. Handy when sorting through them to free up space on the SUNSCAN.
* **Interrupted uploads:** an upload that failed along the way does not count as uploaded.

{% hint style="danger" %}
**"Uploaded" does not mean "backed up".**

Only the JPEG images you picked go to the hub. The SER file, the FITS and the 16-bit PNG files all stay on the SUNSCAN. Deleting an uploaded scan means losing its raw data: it can never be processed again. The app reminds you of this when you delete.

For a real backup, retrieve your files first: see [Retrieve your data](/use/retrieve-your-data.md).
{% endhint %}

For everything else in this release, see [What's New in Version 2.1](/use/mobile-app-overview/whats-new-in-version-2.1.md).