Mobile Obs Pro Astronomy

Wolfgang Zima

In-app purchases

About this app

Mobile Observatory helps you prepare for the August 12, 2026 total solar eclipse. The app shows the eclipse path, local contact times, maximum obscuration, rendered sky view, safety notes, and calendar actions for your location.

Mobile Observatory Pro is the classic paid version of Mobile Observatory. One purchase includes the complete astronomy toolkit.

Already bought this app? Reinstall it with the same Google account and keep using Pro. No subscription is needed.

Prefer to start for free? Mobile Observatory Astronomy is the free version with optional Premium upgrade.

★ WHAT MAKES THIS APP UNIQUE ★

REAL TOPOGRAPHIC HORIZON
Other apps assume a flat horizon. Mobile Observatory downloads NASA SRTM elevation data and renders a photorealistic 3D terrain profile for any location on Earth. All rise and set times are computed against your actual landscape — not a theoretical flat line. Astrophotographers and serious observers rely on this for precision planning.

★ NEVER MISS AN EVENT ★

• Aurora alerts when geomagnetic activity spikes at your location
• Solar flare notifications from real-time GOES X-ray satellite data
• ISS visibility alerts with brightness and trajectory predictions
• Daily astronomical event reminders — conjunctions, eclipses, meteor showers
• Push events directly to your calendar

★ INTELLIGENT OBSERVING PLANNER ★

The built-in Observing Plan Generator creates personalized target lists based on your equipment (naked eye, binoculars, or telescope), location, date, light pollution level, and minimum altitude. One tap generates the best objects for tonight — no experience required.

★ TELESCOPE CONTROL ★

Connect directly to your computerized telescope via LX200, NexStar, or INDI protocol. Browse objects in the app and send GoTo commands — seamlessly integrated with the Observing Plan Generator.

★ COMPREHENSIVE FEATURE SET ★

• Photorealistic sky view with 45,000 stars (2.5 million with download)
• Augmented reality mode with live camera overlay
• Interactive 3D Solar System and VR/Cardboard support
• Complete deep sky catalogs: Messier, NGC, Caldwell, Hidden Treasures
• Solar and lunar eclipse predictions with worldwide visibility maps
• Galilean moon positions and Saturn moon tracking
• Live space weather dashboard with aurora forecast
• Home screen widgets and night mode

★ ALL FEATURES INCLUDED ★

This is the complete paid version of Mobile Observatory with every feature unlocked. It is a one-time purchase for full feature access — satellite tracking, deep sky catalogs, push notifications, telescope control, the Observing Plan Generator, and much more are included from the start.

Trusted by astronomers, astrophotographers, and stargazers since 2011. Continuously updated with new features and data.

Learn more at https://zima.co

Ratings and reviews

I was about to come on here a rip you apart for destroying a great app with the idiotic color choices on text in Twilight, and Moon and contrast colors on Galileian moons...But the V4.5.3 has fixed them all!! Thank You So Much! Been a frustrating couple of months, but now the app is Fantastic again. If you're into astronomy on any serious level, this app is incredible in the amount of information it puts at your fingertips. Such a vast amount of data on everything you might find in the sky!!

This app is one of the first ones I ever thought worthy of paying for, and it's been on every phone and tablet I've used for years. The recent rewrite the app went through has squashed some longstanding bugs and made things work with a little more polish, which is wonderful. Yes, there's a learning curve to it but it has way more information that most people will ever need.

Best observatory app ever. Like having an encyclopedia for the cosmos in your pocket. Wish it was a little less touchy with the locking and unlocking every time, but I probably just don't fully understand how to use it or I need to just get used to it. Not a problem really. I am having issues running the app right now but it seems like the issue is on my phone. Already updated, uninstalled, reinstalled, about to uninstall and restart my phone then reinstall again. We'll see what happens :{|l!'`

What’s new

Version 4.7.5

🔧 Bug fixes and stability improvements.