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Mobile Observatory v4.7.5 MOD APK

File Information

Mobile Observatory MOD APK icon
4.8
Updated2026-09-19
Versionv4.7.5
Size—
RequiresAndroid 8.0
DeveloperWolfgang Zima
CategoryEducation
Package namecom.zima.mobileobservatorypro
Paid11.99 EUR on Google Play
Google PlayView on Google Play

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Screenshots

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Description

Mobile Observatory Mod APK is an astronomy app that lets you plan observations from your location, inspect the sky, and prepare for celestial events. It combines location-based predictions, visual sky tools, alerts, and planning features for naked-eye observers, binocular users, and telescope owners.

Prepare for the 2026 solar eclipse

Mobile Observatory Mod APK includes tools for the total solar eclipse on August 12, 2026. You can view the eclipse path, check local contact times and maximum obscuration, and see a rendered view of the sky for your location. The app also includes safety notes and lets you add eclipse events to your calendar.

Plan around your actual horizon

Rise and set times can account for the terrain around an observing site instead of using a flat horizon. Mobile Observatory Mod APK downloads NASA SRTM elevation data and creates a photorealistic 3D terrain profile for locations around the world. This helps you plan observations against the landscape at the place where you will watch.

Find targets for the night

The Observing Plan Generator builds a target list from the conditions you choose. Set your equipment, location, date, light-pollution level, and minimum altitude, then generate objects suited to that session.

  • You can plan with the naked eye when you are not using optical equipment.
  • You can select binoculars to shape the target list around binocular observing.
  • You can select a telescope when planning an observing session with a telescope.

Use sky views and astronomy catalogs

The photorealistic sky view includes 45,000 stars, with 2.5 million stars available after downloading additional data. Augmented reality mode places a live camera overlay behind the astronomical view. You can also explore an interactive 3D Solar System and use VR/Cardboard support.

For object browsing, Mobile Observatory Mod APK includes the Messier, NGC, Caldwell, and Hidden Treasures deep-sky catalogs. It also tracks the positions of the Galilean moons and Saturn's moons.

Track events and space weather

Mobile Observatory Mod APK can alert you when geomagnetic activity rises at your location, using an aurora alert. It also sends solar-flare notifications from real-time GOES X-ray satellite data and ISS visibility alerts with brightness and trajectory predictions.

  • Daily reminders cover conjunctions, eclipses, and meteor showers.
  • Solar and lunar eclipse predictions include worldwide visibility maps.
  • A live space-weather dashboard includes an aurora forecast.
  • You can send events directly to your calendar.

Connect a computerized telescope

You can connect a computerized telescope through LX200, NexStar, or INDI. Browse objects in Mobile Observatory Mod APK and send GoTo commands, with telescope control working alongside the Observing Plan Generator.

Display and access

Mobile Observatory Mod APK includes home-screen widgets and a night mode. This is the paid version of the app, with satellite tracking, deep-sky catalogs, push notifications, telescope control, and the Observing Plan Generator included through a one-time purchase. Reinstalling with the same Google account keeps Pro access, and no subscription is required.

What’s New

v4.7.5

Version 4.7.5

🔧 Bug fixes and stability improvements.

The developer's own release notes, taken from Google Play.View on Google PlayRetrieved 2026-09-20

Verified package facts

Versionv4.7.5
Size—
RequiresAndroid 8.0
DeveloperWolfgang Zima
Package namecom.zima.mobileobservatorypro

Every value above comes from the installable file and is matched with the app's Google Play listing. TechBigs does not run antivirus scans or test-install builds on a phone.

Data Safety

Mobile Observatory’s developer publishes this on Google Play — what the official app collects and what it shares. We reproduce it here so you can read it before installing.

  • Data is encrypted in transitYour data is transferred over a secure connection
  • Data can’t be deletedThe developer doesn’t provide a way for you to request that your data be deleted
  • Committed to follow the Play Families PolicyThe developer has committed to follow the Play Families Policy for this app.

Data this app may collect

  • App info and performance
    • Crash logsAnalytics
    • DiagnosticsOptionalAnalytics
No data shared with third parties

View on Google PlayRetrieved 2026-09-20

Specifications

Version

v4.7.5

Latest

Size

—

Total

Category

education

Developer

Wolfgang Zima

Views

190

Updated

2026-09-19

Mod Review

This build fits observers who want to create a target list from their location, equipment, light pollution, and minimum altitude. It also suits eclipse planners who need local contact times and maximum obscuration for August 12, 2026. Skip it if collecting crash logs and diagnostics is a concern, or if you only need an app with no telescope and event-planning tools. Version 4.7.5 lists bug fixes and stability improvements rather than new observing functions.

The MOD in practice

This is the original build, not a MOD with a stated gameplay or feature change. Mobile Observatory Mod APK is the paid version with its astronomy toolkit available through a one-time purchase. Satellite tracking, deep-sky catalogs, push notifications, telescope control, and the Observing Plan Generator remain the main included tools. The version is 4.7.5, matching the listed bug-fix and stability release.

What works

  • The terrain horizon uses elevation data, helping you assess rise and set times against a real observing landscape.
  • The planner combines equipment, location, date, light pollution, and altitude to create a session-specific target list.
  • LX200, NexStar, and INDI support let telescope owners browse objects and send GoTo commands from one app.
  • Eclipse maps, local contact times, and calendar actions support planning for the August 2026 total solar eclipse.

What to watch

  • Mobile Observatory Mod APK collects crash logs and diagnostics, so check whether those data types fit your privacy preferences.
  • Android 8.0 is the minimum installation requirement, not a guarantee of performance on every device.
  • The current release notes mention only bug fixes and stability improvements, so do not expect a newly listed feature set.

Our take

Install it when you need terrain-aware planning, astronomy alerts, or compatible telescope control in one paid app. Check that your device runs Android 8.0 or later before installing.

FAQ

What is Mobile Observatory used for?

Mobile Observatory helps you plan astronomy observations from your location. It includes sky views, celestial-event predictions, deep-sky catalogs, alerts, and an observing planner that creates target lists for the night.

What does the MOD change in this build?

This is the original build, with no MOD feature change stated. It is the paid version of Mobile Observatory, with the astronomy toolkit available through a one-time purchase and no subscription.

How does the Observing Plan Generator choose objects?

The Observing Plan Generator uses your equipment, location, date, light-pollution level, and minimum altitude. It supports planning for naked-eye observing, binoculars, and telescopes.

Can Mobile Observatory control a telescope?

Mobile Observatory can connect to computerized telescopes through LX200, NexStar, or INDI. You can browse objects in the app and send GoTo commands, and telescope control works with the Observing Plan Generator.

What Android version is needed for Mobile Observatory?

Mobile Observatory requires Android 8.0 or later to install. The listed version is 4.7.5, whose release notes mention bug fixes and stability improvements.