Astro Night Companion

Astro Night Companion plans your astrophotography nights: whether to go out, where to go, what to shoot, with which exposures and in which filter order. TONIGHT AND FORECAST • A 0-100 verdict for the night, the best window, dark night, clouds, seeing, humidity, wind and Moon, hour by hour. • 5-night observability, with the reasons behind each score. • Météo-France models in France, Open-Meteo elsewhere, seeing computed from the jet stream, 7Timer as a backup. NEARBY SITE • Light pollution map (David Lorenz atlas) and a search for the best dark site reachable by car, away from dwellings, with directions and the weather checked at the site. TARGETS AND EXPOSURES • Targets from the catalogue (Messier, NGC, IC, Sharpless, LDN, vdB, Abell…) ranked for your sky, altitude, Moon and weather. • Exposures, number of subs and filter order computed for your equipment (sensor, focal length,…