Starmap

The complete sky atlas for observers who look up. Millions of stars, every deep-sky catalogue, live Sun data. Free. No ads. No subscriptions.

Starmap is the complete reference for everyone who observes the real night sky — built by a professional astronomer, and given freely.

No ads. No subscriptions. No in-app purchases. No tracking. Simply the most catalogue-complete star atlas ever published for iPhone.

• Millions of stars, 88 constellations, and the full Messier, NGC, IC and Caldwell catalogues • Specialist catalogues no other app carries: Sharpless, van den Bergh, Lynds, Barnard, Abell clusters • Live solar physics from NOAA — sunspots, flares, X-ray flux, Kp index and aurora forecasts • 9,900 named lunar features, with their origins and etymologies • Live comets, asteroids and trans-Neptunian objects from the Minor Planet Center • Deep-sky detail enriched on demand from SIMBAD, searchable by any catalogue identifier • A true optics workflow: define your telescope and eyepieces, see real field of view, Telrad rings and reticles • A dark-adapted red night-vision mode, made for use at the eyepiece

Point your phone at the sky to identify anything above you, or plan the night before you step outside. Rise, transit and set times for every object, sent straight to your calendar.

A reference work, not a toy. Free, because that is what it should be.