Stars on the SIRENE Observatory - Star trails above the amateur observatory SIRENE - France...

Stars on the SIRENE Observatory - Star trails above the amateur observatory SIRENE - France - Several decades of military presence have limited urban settlements and thus light pollution on the Albion plateau. This photographic pose of over an hour, showing the rotation of the stars of the constellations of Cassiopee and Persee above the domes of the SIRENE observatory, testifying to the absence of genant halos of light. As far as the horizon is concerned, one can even guess a few peaks of the Alps, which glow slightly under the light of a gibbous Moon. During the installation, the nightlife of an active observation site was recorded: the domes rotated, the telescopes moved, red lamps were lit to read maps or set instruments, and an animator used a green laser to design a few stars for the public. One hour exposure star trails above the SIRENE amateur observatory in Luberon (Vaucluse - France). Located on the Albion plateau, an ancient military base, this place is well preserved from light pollution. During the exposure, activities of a public observation night have been recorded: dome has turned, red lights have been turned on, green laser to show stars has been used