Astro-Photographer computes every event from your coordinates, scores it out of 100 for how photographable it is from your sky, and ranks opportunities by score rather than date. Moon, planets, eclipses, the new crescent, comets, deep sky, and weather by the hour.
Six layers of information, deliberately separated: what is computed exactly, and what is fetched from the network as an estimate.
Target altitude, moonlight that night, distance from twilight, weather, and your sky's darkness on the Bortle scale. A card explains every factor.
Phases to the minute, the new Moon that opens the deep-sky window, and Hijri crescent visibility: when it can be seen from your site, at what altitude and age.
Not from a 'greatest eclipse' table but computed for your coordinates: magnitude, type and contact times as you will see them.
Oppositions, greatest elongations, close conjunctions with the Moon and each other, and meteor showers with peak and Moon interference.
From the JPL Small-Body Database with predicted brightness, altitude and solar distance, refreshed daily and shown explicitly as estimates.
Over a hundred galaxies, nebulae and clusters with an image, angular size and the best night to shoot each from your site.
One bar per hour from 20:00 to 04:00 with three cloud layers, a dew warning for your lens, wind, and the longest clear run each night.
Your nearest opportunities in three sizes with name, score and time. Tap a row to open its details.
Compute from your current location or a place you pick on the map and save by name, and compare city sky with camp sky.
Screens from version 3.2.4 on iPhone, computed for Riyadh.
We run no servers and collect nothing about you. The single exception is stated plainly: your site's coordinates are sent to the weather service to fetch a cloud forecast. Privacy →
Every event is computed as seen from your coordinates: its altitude above your horizon, its time, the Moon's effect on it. Instead of granting access you can pick a site on the map in Settings and save it by name.
Yes. Events, Moon, planets and eclipses are computed locally. The network is used only to fetch comet elements from JPL and the forecast from Open-Meteo; when offline, the last cached copy is shown with its age.
Usually because it is not photographable from your site: below the horizon, in daylight, or drowned by moonlight. Other sites list events for the whole Earth; the app filters them for your place.
Jean Meeus's 'Astronomical Algorithms' for Sun and Moon positions and JPL orbital elements for the planets. Phases and eclipses are derived from the same positions, not from precomputed tables.
No. Free, with no in-app purchases or subscription in this release.
Astro-Photographer