Sun & moon
Rise and set times, azimuth on a compass dial. Frame your shot to the exact horizon position, every day of the year.
— Astrophotography Almanac
Hunt the dark. Catch the light.
Sun and moon, golden hour, Milky Way visibility, light pollution maps, and live aurora tracking — every number a serious astrophotographer needs, on one screen.
Every number you plan a shoot around.
Built by people who actually shoot the sky. Every number is derived from canonical astronomy — sidereal time, ecliptic coordinates, VIIRS satellite light pollution data, NOAA geomagnetic readings.
Golden & blue hour
Precise morning and evening windows for warm and cool light, computed for your location's elevation and date.
Moon phase calendar
A full month at a glance with phase icons and illumination percent. Pick the darkest nights for deep sky.
Light pollution map
Interactive Bortle overlay sourced from the World Atlas of Artificial Night Sky Brightness. Pinch to find dark sites near you.
Milky Way visibility
Galactic center altitude over the next 24 hours, factoring twilight and moon brightness. Know when the core is up.
Aurora tracker
Real-time Kp index and 3-day forecast from NOAA SWPC, translated to a simple verdict for your geomagnetic latitude.
— Bortle 1 → 9
Find the dark.
The interactive light-pollution overlay maps the entire planet from excellent dark sky (Milky Way casts shadows) to inner city (a handful of stars on a clear night). Drop a pin, see the Bortle level, decide if it's worth driving.
Darkest sky Inner city
Plan around the moon, not against it.
Deep-sky imaging wants new moon. Landscape shoots love a rising gibbous. The calendar shows phase and illumination for any month, with quick filters for dark windows and bright nights.
Tonight
Wan. Cres. — Built for the field
In a remote canyon at 2 a.m., your phone still works.
Sun, moon, golden hour, moon calendar, and Milky Way altitudes all run on your device — pure astronomical math, no server in the loop. The Aurora Tracker is the one exception: it pulls live Kp data from NOAA SWPC when you have signal, and gracefully shows the last known state when you don't.
- Sun & moon math On-device · Meeus algorithms
- Golden + blue hour On-device · sun altitude
- Moon phase calendar On-device · synodic period
- Milky Way visibility On-device · sidereal time + GC altitude
- Light pollution tiles Cached on first load · djlorenz VIIRS
- Aurora Kp data Live · NOAA Space Weather Prediction Center
— $4.99 · One time
Pay once. Shoot the sky for the rest of your life.
No subscriptions. No in-app purchases. No ads. No analytics. One small download and the night sky becomes legible.