Astrophoto Calculator

Astrophoto Calculator is a handy Chrome extension designed for astrophotographers to accurately compute image field sizes based on your camera and lens combinations. It allows users to determine the maximal exposure duration for shots without guiding, helping to plan optimal exposures and avoid star trailing. Additionally, the tool can calculate the length of star trails, assisting in creative astrophotography planning.

One standout feature is its customizable camera list, which is saved on your device and editable via any text editor, providing flexibility and personalization to your setup. Whether you're capturing star fields or planning long exposure shots, Astrophoto Calculator is a practical assistant that simplifies complex calculations involved in star photography and astronomy.