Plan your astrophotography nights around the sky you actually have

What it does

• Every clear night, ranked

  A calendar scores your targets per night: hours above your horizon in real darkness, peak altitude, moon phase and separation, and the cloud forecast for the coming days.

• Framing before you go

  See your exact field of view on real sky surveys, rotate it, and get a mosaic grid when the target is too big for one frame.

• Your horizon, not a flat one

  Draw the trees and rooftops around each site, or import a Stellarium or N.I.N.A. horizon file. Planning uses what you can actually see.

• Far beyond Messier

  NGC/IC, Caldwell, Herschel 400, Sharpless, Barnard, LDN, vdB, Arp and more, searchable by common name. Comets and events like occultations and close conjunctions too.

• Gear that fits the target

  Compare telescopes and cameras by field of view and image scale, and see at a glance whether a target is too small, fits, or needs a mosaic.

• Light pollution per site

  Check sky brightness and light domes around your sites with data from the Light Pollution Atlas.