The observatory was established in Juvisy-sur-Orge in 1883 by the French astronomer and author Camille Flammarion. In March 2010, the structure was classified as a historical monument by the French Ministry of Culture. The observatory belongs to the Société astronomique de France.
Observatory’s sundial
Observatory's telescope in 2012
Flammarion in the observatory circa 1893.
Ferdinand Quénisset
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Ferdinand Jules Quénisset (1872–1951) was a French astronomer who specialized in astrophotography.
The Pleiades cluster. Photo by Ferdinand Quénisset. 1907