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.