Tools for deep-sky imaging
Satellite trail forecasting for cleaner deep-sky stacks.
AstroSat models satellite crossings through your exact field of view using your location, target, optics, camera, exposure length, and session time. It shows likely trail paths, sunlit visibility, affected subs, and the cleanest run for your imaging plan - so your stack starts with cleaner data.
Session planner
Trail Forecaster
See which satellites cross your framed field during an exposure - when, where on the sensor, how bright - then find the cleanest run of subs.
Open the forecaster
Coordinate converter
Meridian
Convert between equatorial (RA/Dec) and horizontal (Alt/Az) coordinates for any site and moment, with an all-sky view of where the target sits.
Open the converter