Since September 2006, I am Secretary General of Société Astronomique de France (about 2000 members), which was founded by Camille Flammarion in 1887. Its magazine L'Astronomie is published monthly.
October 2000, I am the Administrator of the observatory of Société
Astronomique de France, which is located in a tower at the top of
Sorbonne University. Public observation sessions using a refracting
(diameter 153 mm, focal length 2300 mm) take place
there on Monday and Friday evenings. At night, it is possible to
observe the Moon, the planets, their main satellites, the rings of
Saturn, some double stars... During the day, sunspots are observed on projected images of the sun.