NavPak

天体ナビゲーションのためのツールキット。

This is a Tool Kit for celestial navigation, and it is also useful for astronomers and casual star gazers.

This app expires at the end of 2020. For the latest version, please see this link:

http://globenav.com/navpak_android.html

Includes Almanac, sight reduction, plotting, great circles and Zenith Star Navigation. Also has a star/planet Identifier, DR calculator, and TSD calculator.

There is a Globe View, Sky View, and Star Chart to help identify stars and planets.

This is a free app which is valid until the end of 2020. Please see our website where there is a tutorial for NavPak Android, and other info:

http://globenav.com/navpak_android.html

NavPak reads and writes 2 small files in your storage to save your sights and settings. It will not read or write any other files.

If you are updating a previous version of NavPak:

After updating, please verify that it says: Dec 5, 2019 in the "About NavPak" panel. This is located below the main menu when you start the app. If the date shown is previous to Dec 5, then go to Settings->Apps->NavPak, delete the storage for the app, and reinstall it. This should be handled automatically by the App Store distribution system, however in some cases, it may not.