Star Exposure Calculator vs AstroExposure

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.

AstroExposure is a simple, precise calculator for planning your night sky photography. Choose your calculation method, enter your focal length, aperture, and sensor specifications, and instantly get a recommended exposure time to minimize star trailing. The app supports the most widely used astrophotography rules, including the 500 Rule and the NPF Rule. You can also select a camera from the built-in database, adjust settings manually, and save your favorite configurations. Key features: • Astrophotography exposure time calculation • 500 Rule and NPF Rule support • Sensor or camera selection • Focal length, aperture, and pixel size settings • Favorites for quick access to your settings • Clean, fast, and distraction-free interface AstroExposure is designed for photographers who want to spend less time calculating and more time under the stars.