This app provides precise polar alignment for telescopes, with or without a polar scope. It includes a comprehensive suite of astronomical tools, such as a DSO database, calculators, and mount control. An accompanying watch app offers real-time alignment data and weather information.
7.1
August 9, 2026
• Xasteria astro weather: ◦ Solar Eclipse tool improvements, including past eclipses and audio cues in live mode. ◦ Experimental Camera tool in the Eclipse simulator for automated eclipse photoshoots: diamond ring, Baily's beads and bracketed totality exposures. ◦ New light pollution data option, extrapolated from the World Atlas using VIIRS 2025 satellite night-light radiance. ◦ Live map tracking of the ISS and satellites, pass simulation, and dedicated Tiangong and Hubble views. ◦ New Sunrise / Twilight setting for the weather tonight widgets. ◦ Weather tonight complication and widget for Apple Watch. • Daytime Alignment: crosshair / target can now be adjusted on the Camera Azimuth Calibration confirmation screen. • Sun Finder added: a Push To that guides you to the Sun (found in Daytime Alignment). • DSO Database: new Double / Multiple Stars category. • iOptron WiFi Connect: ◦ Support for all the newer mounts (HAE, HAZ, HEM and others), with switching between Equatorial and Alt-Az on mounts that support both. ◦ New Move & Sync Mount tool and Point GoTo tool, both with sky maps. ◦ Current Point Query updated with a sky map. ◦ Mount time and location set automatically. • Elevation can be entered for manual locations, and UTC is available as a time zone option. • UI improvements, most notably a clickable location dropdown and a new landscape setting on iPhone that lets most tools work in landscape. • Fixes, including the Hop To / Laser Align targeting display. Remember, the app never nags you with popups, so it gets very few ratings/reviews. Support it by rating it!
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This app helps you achieve precise polar alignment for your telescope, crucial for long-exposure astrophotography. It calculates the correct position for alignment stars based on your location and date. The app also offers a wide range of astronomical tools and a companion watch app for convenient access to data.
Key features include accurate polar alignment calculations, support for various polar scope reticles, daytime alignment tools, a comprehensive Deep Space Object database, over 30 astronomical calculators, and Wi-Fi control for iOptron mounts. The Pro Watch version adds real-time alignment display, weather, and a bubble level to your Apple Watch.
The app itself is free to download and use, with all features and updates provided at no additional cost. The only in-app purchases available are voluntary donations to support the developer.
The main application is designed for iOS devices. The Pro Watch version specifically includes an Apple Watch app, indicating compatibility with Apple Watch devices paired with compatible iPhones.
Enter your location (via GPS or manually) and the current date and time. The app will then display the position of the celestial pole within your polar scope's reticle. You can select your specific polar scope model from a large list for the most accurate overlay. The app also offers alternative alignment methods for situations where a polar scope is not usable.
