Support
How can we help?
M102 Astro is run by one person in Chicago, so support goes straight to a human. Email is the fastest route for anything to do with ATLAS, the imaging database, the store, or the podcast.
I found a bug in ATLAS.
Email us, or use the feedback form inside the app (profile menu, then Rate ATLAS). Both land in the same place. Helpful details:
- Device and OS version
- The app version, shown at the bottom of the profile menu
- What you expected, and what happened instead
The app is not showing a change I know shipped.
If you added ATLAS to your home screen, it caches the app and keeps serving the older version until you accept the update prompt. Open
atlas.m102astro.com in your browser directly to confirm, then relaunch from the home screen and accept the refresh when it appears.
Do I need an account?
Not to use ATLAS. Tonight's best targets, the 3D sky and dome, conditions and framing all work signed out. From version 1.2.7 of the iPhone and Android apps, you can also buy or restore Astronomer without an account; on the website, subscribing needs one. Signing in with Apple, Google or GitHub saves your location, equipment and preferences so they follow you between devices, carries a subscription to the website and your other devices, and turns on My List and alerts.
How do I delete my account and my data?
Open the profile menu in ATLAS (tap your avatar), open the Account section, and choose Delete account, then confirm the second step. That permanently removes your profile, saved location, equipment profiles, feedback, and session data, and it cannot be undone.
If you have an Astronomer subscription bought through the App Store or Google Play, cancel it there first: deleting your ATLAS account does not cancel a subscription held by Apple or Google, and they will keep billing you. If you cannot sign in, email
admin@m102astro.com from the address on the account and we will delete it for you. Full steps:
Delete your account.
Does ATLAS cost anything?
ATLAS is free to use, with no ads and no full screen upsells. Astronomer is an optional subscription that adds the twelve month imaging planner, Universe view and the full deep sky catalogue, well past the famous targets. It is $3.99 a month or $29.99 a year, and new subscribers on the App Store pay $19.99 for the first year. One subscription covers your ATLAS account everywhere you sign in, on the web and in the app.
I subscribed on my iPhone. Do I get it on the website too?
Yes, once it is on your ATLAS account. Astronomer is tied to your account, not to a device or a store, so signing in with the same account on the website unlocks the same things. If you bought it in the app without signing in, sign in there first with the account you want it on. The reverse works as well: a subscription bought on the website applies in the app when you sign in. Buy it once, in whichever place suits you.
I reinstalled ATLAS or got a new phone. How do I get Astronomer back?
Sign in with your ATLAS account. If it was never on an account, tap Restore Purchases on the Astronomer page while using the same Apple Account or Google account you bought it with. Restore moves the subscription to whichever account or signed-out phone is using it at the time, and the account that held it before goes back to free.
How do I cancel?
Wherever you bought it. If you subscribed in the iPhone app, cancel in Settings, your Apple Account, then Subscriptions. On Android, in Google Play under Subscriptions. If you subscribed on the website, open the profile menu in ATLAS and choose Manage subscription. Deleting your ATLAS account does not cancel an App Store or Google Play subscription, so cancel it there first.
Where does the data come from?
Star positions come from the HYG Database v3.8, deep sky objects from OpenNGC, solar system positions and twilight from astronomy-engine, weather from Open-Meteo, and place names from OpenStreetMap and Nominatim. Full attribution is in the About panel inside the app.
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