Astrophotography Calculator

Calculate the perfect time for your star photography long exposures.

Simple and intuitive app to calculate the ideal exposure time while shooting astrophotography.

Stars are not fixed in the sky (rather they appear not to because of Earth's rotation), so exposing for too long will start showing motion blur. Calculating the correct exposure time on the field can be tricky, and many approximation rules (e.g.: 400 rule) are often way off from the actual value. This app just solves all of that!

Simply choose your camera from the list, write down the details of your lens, and the app will calculate the maximum exposure time before star trails start to show.

The app is in its early stages, more feature might come in the future (I'm open to suggestions!).

Can't find your camera in the list? Let me know!

Don't forget to take a tripod, and happy shooting!

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