Mobile Obs Pro Astronomy is your go-to app for experiencing the wonders of the sky. It helps you prepare for the upcoming total solar eclipse on August 12, 2026. With this app, you can easily find the eclipse path, local contact times, and maximum obscuration for your location. The app also provides a rendered sky view, safety notes, and options to add calendar actions to keep you organized.

Mobile Obs Pro is the paid version of the original Mobile Observatory. When you make a one-time purchase, you receive the complete astronomy toolkit, ensuring you have everything you need for your stargazing adventures.

If you've already bought the app, simply reinstall it using the same Google account, and you can continue to access all the Pro features without needing a subscription. For those who want to start for free, there is a version called Mobile Observatory Astronomy, which offers an optional premium upgrade for added features.

What sets Mobile Obs Pro apart is its real topographic horizon. Unlike many other apps, it utilizes NASA SRTM elevation data to create a photorealistic 3D terrain profile for any spot on Earth. This allows you to see accurate rise and set times based on your actual landscape, which is essential for astrophotography planning and serious sky observers.

With Mobile Obs Pro, you'll never miss an important event. The app sends Aurora alerts when geomagnetic activity spikes near you, as well as solar flare notifications using real-time GOES X-ray satellite data. It also features ISS visibility alerts, so you can track the International Space Station's movement, including its brightness and trajectory predictions. Daily astronomical event reminders keep you informed about conjunctions, eclipses, and meteor showers, with the added convenience of pushing these events directly into your calendar.

One of the standout features is the Observing Plan Generator. This intelligent tool creates personalized target lists based on your equipment—whether you're using your naked eye, binoculars, or a telescope. You simply enter your location, the date, light pollution levels, and minimum altitude, and with one tap, you'll receive the best objects to observe that night, making it easy for anyone to enjoy stargazing.

For telescope users, Mobile Obs Pro provides telescope control options. You can connect directly to your computerized telescope using LX200, NexStar, or INDI protocols. This integration allows you to browse celestial objects in the app and send GoTo commands, all seamlessly connected with the Observing Plan Generator.

The app comes packed with a comprehensive feature set. It offers a photorealistic sky view that includes 45,000 stars (or 2.5 million if you download additional data). You can explore the 3D Solar System and use augmented reality mode with a live camera overlay. It provides complete deep sky catalogs like the Messier catalog, NGC catalog, Caldwell catalog, and more. You can also receive solar and lunar eclipse predictions along with worldwide visibility maps. Additionally, the app helps you track Galilean moon positions and Saturn moon movements.

Mobile Obs Pro includes a live space weather dashboard with an aurora forecast, helping you stay updated on space weather conditions. It also features night mode for comfortable viewing in low-light situations, as well as home screen widgets for quick access to information.

This complete version of Mobile Obs Pro ensures that every feature is included from the start. You gain full access to satellite tracking, deep sky catalogs, push notifications for events, telescope control, and more—all with just a one-time purchase.

Trusted by astronomers, astrophotographers, and stargazers since 2011, Mobile Obs Pro is continuously updated with new features and enhanced data to provide you with the best experience possible. Now you’re ready to explore the night sky, whether you’re a veteran astronomer or just starting your journey into stargazing.