Indstronomy Apps Apps

A handy field tool for fixed tripod astrophotography. Calculatesthe best exposure times to capture beautiful night time photographsof the Milkyway and star filled nightscapes. Eliminate and stopstar trails! The app comes with a database of 3600 cameras. The 500rule and 600 rule are outdated now for the new DSLRs. They heldgood for the film era. This application uses the new NPF rule tocalculate the exposure times. It uses the Aperture, Focal lengthand most importantly the pixel size of the camera's sensor tocalculate the exposure times. The app comes loaded with a databaseof 3600 cameras. No need to search for your camera's resolution andthe pixel size in microns to calculate the exposure times! Justselect your camera's manufacturer and model, followed by theplanned F-ratio and focal length of the lens. The app provides youthe best exposure time to use. Credit: The original NPF formula isderived and explained here: http://www.sahavre.frhttp://www.sahavre.fr/tutoriels/astrophoto/34-regle-npf-temps-de-pose-pour-eviter-le-file-d-etoiles