Dark Window

Go / no go for deep sky imaging

Astronomy engineOK
Weather linkOK
Target catalogOK

Dark Window

Go / no go for deep sky imaging

Saved locations0/5

None yet. Enter coordinates below and tap “Save location”.

Latitude

Longitude

Night

Field of view (°)

Longest side of your camera frame, in degrees. Used to suggest targets that fit.

Saved equipment0/5

None yet. Enter a field of view and tap “Save as equipment”.

Enter coordinates, pick a saved location, or tap “Use my location” to get a forecast.

Support Dark WindowFree, no ads. A tip covers hosting and keeps updates coming.

Dark Window is a free astrophotography planner. It checks clouds, moon phase, astronomical twilight, seeing and transparency for your location, tells you whether tonight is a GO or NO-GO for deep-sky imaging, and suggests targets that fit your telescope’s field of view.

Weather from Open-Meteo · Seeing from 7Timer! · Astronomy via suncalc