Star Exposure Calculator

Star Exposure Calculator is an app that helps you calculate the right exposure settings for pin-sharp stars in astrophotography. Features: • Calculate star exposure via simple or complete NPF rule for pin-sharp stars • Calculate star exposure via 500 rule • Calculate focal ratio of your telescope • Telescope magnification calculator • Maximum telescope magnification calculator • Telescope true field of view calculator We constantly update the app to provide more features that users are looking for, so expect even more with future updates.