The large directory of astronomical community sites (GRESAC) is finally available for iPhone X and iPhone 8 plus and above all is faster.

The large repertory of community astronomical sites regroups in a single application all the places allowing the practice of astronomy: usual sites, gatherings, observatories, gites or camping in France and more for the moment but we work hard to enlarge for world.
Whether it is for your observations on holidays, on weekends or to organize your evening.

Do not hesitate to send us your suggestions to improve the usefulness of the application by mail (available from the application) and / or adding new site.

Astronomically yours.

What’s New

Version 1.2

This app has been updated by Apple to display the Apple Watch app icon.

Added compatibility with the iPhone X and the iPhone 8 Plus.
Fixed a minor bug.

Ratings and Reviews

4.8 out of 5
6 Ratings

6 Ratings

thierry7723 ,

Application indispensable

Cette application est assez complète pour l’astronome amateur qui souhaite pouvoir choisir des lieux d’observation en fonction de la pollution lumineuse.
(1 étant mauvais et 20 excellente conditions)
On sent qu’un gros travail a été accompli par les devellopeurs

Rocaillou ,


A must have for all of us looking for places where to put our scope at night when we travel. It would be fantastic to have it for other parts of Europe. Any plans ? Germany ? I love it ...

Super quasar ,

Bonne initiative

La perfection n'est pas de ce monde donc 4 étoiles 😜
À mixer avec la carte des pollutions lumineuses ?

App Privacy

The developer, Alban BERNARD, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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