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Polar Finder

Publisher: TechHead
Price: 0.99 USD

App Rank History

Check out the download rank history for Polar Finder in United States.

Rank History shows how popular Polar Finder is in the Google Play, and how that’s changed over time. You can track the performance of Polar Finder every hour of every day across different countries, categories and devices.

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App Description

When astronomical observations or imaging is done using an equatorial telescope mount, the right-ascension (RA) axis should be parallel with the rotation axis of the Earth to avoid star-trails and errors in guiding. The method how we achieve it is called polar alignment and it starts with a rough alignment of the RA axis. The best aid for this is to use a polar finder scope with a reticle. On the reticle the Polar star (and the Octant for the Southern hemisphere) is engraved and should be positioned over the real Polaris by turning it. Because the Polaris is not exactly coincide with the Earth's rotation axis but rotates around it, one should know the exact hour angle of the Polaris to adjust (rotate) the finder.

This utility helps you solve this problem by graphically showing you the current position of the Polaris. The application tracks and draws the position of the Polaris (or Octant) in real-time and also displays its hour-angle, the local sideral time, current local time and the longitude of the place. The longitude can be entered manually or obtained using the built-in GPS. The view on the display can be mirrored to match the view in your polar finder scope. Key features are as follows:

• Northern, southern hemispheres
• Naked eye, telescopic view
• Customizable marker angle
• Support for: Astro-Physics, AstroTrac, Ioptron, Losmandy, Skywatcher, StarAdventure, Takahashi and Vixen eyepiece reticles
• Precession
• Night vision mode
• Enter longitude of your place manually or via built-in GPS

Note: On some new devices running Android 4.x the preferences menu can be reached via pressing and holding the Recent Apps Button - which is a ‘soft key’ (not the Home button). On Galaxy Tabs there are three buttons at the bottom. The middle one is the main, hardware button. The task manager is just on its left side. Press and hold for about two whole seconds on it, and then the menu comes up.

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App Reviews and Ratings

Find out what users think of Polar Finder by reading the reviews and checking the rating.


423 ratings

Very bad app, Not detecting GPS.

Feb 18, 2021

Not really a product ready to be sold

Apr 27, 2021

Works perfectly for my ioptron. Still living it after 4 years

Apr 11, 2021

Ok app but crashes a bit on samsung tablet.

May 08, 2021

Works brilliantly no hassle and lots of reticle to choose from

Feb 20, 2021

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