Camille Flammarion Observatory
|Alternative names||Juvisy Observatory|
|Named after||Camille Flammarion|
|Organization||Société astronomique de France|
|Related media on Wikimedia Commons|
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.
Building and grounds
The observatory is located on Route nationale 7 (formerly the avenue de la Cour de France), close to the downtown of Juvisy. The site, which is on a prominent hilltop location, is a large parcel of land that contains several buildings, a monumental gate, gardens, and a small forest.
The building housing the observatory was originally a post house constructed in 1730. In 1883–1884, Flammarion transformed the structure into an astronomical observatory by adding a large equatorial room for the telescope, a library, a scientific museum, a meteorological station and an agricultural research station.
In 1899, the architect François Giamarchi was commissioned to transform the east façade of the building (garden side) by adding a decorative relief of ionic columns supporting a cornice.
Flammarion's second wife, Gabrielle Renaudot Flammarion, bequeathed the entire site to the Société Astronomique de France upon her death in 1962. In 1971, the society signed a 99-year lease with the municipality of Juvisy to ensure the site's maintenance, preservation and accessibility. Today, the society organises regular observations at the observatory for the general public.
The 5 meter dome was constructed by the engineer Adolphe Gilon. It houses Camille Flammarion's equatorial mount refracting telescope, which has a diameter of 240 mm and a focal length of 3600 mm. The telescope was built by Denis Albert Bardou, a Parisian optics manufacturer. Flammarion's choice of the telescope was inspired by a similar instrument in the west tower of the Paris Observatory.
Astronomers who conducted research at the observatory included:
- Camille Flammarion, astronomer, from 1883–1925.
- Eugène Michael Antoniadi, assistant astronomer, 1891
- Anton Schmoll, June 1892
- E. Mabire, from 6 June - 12 July 1892
- Ferdinand Quénisset, observer, from 1–31 May 1892, and August 1892
- Léon Guiot, from 20 August - 14 September 1892
- Ferdinand Quénisset, from 1 May - 1 September 1893
- Lucien Rudaux, June 1893
- Léon Guiot, from 2 August - 4 October 1893
- Gaston Millochau, from 1–30 September 1893
- Eugène Michael Antoniadi, from 27 August - 1 November 1894
- Eugène Michael Antoniadi, from 31 May - 28 September 1896
- Eugène Michael Antoniadi, from 31 January - 19 August 1897
- Antonin Benoit, assistant astronomer, from 9 September - 6 December 1902, from 23 May - 21 July 1904, from 3 August 1904 - 13 April 1905
- Ferdinand Quénisset, from 15 October – 23 December 1906
- Ferdinand Quénisset, assistant astronomer, from 1906–1947.
- Gabrielle Renaudot Flammarion, astronomer, from 1925–1962.
- Base Mérimée: Observatoire Camille Flammarion, Ministère français de la Culture. (in French)
- Base Mérimée: Ferme de Fromenteau ; auberge de la Cour de France ; relais de poste ; observatoire Camille-Flammarion ; demeure de Camille Flammarion ; musée, Ministère français de la Culture. (in French)
- Mélanie Desmeules. "Camille Flammarion (1842-1925), le cadranier d'un seul cadran."Le Gnomoniste (La Commission des Cadrans solaires du Québec), Vol. 9, No. 1, Mars 2002, page 6.
- "Liste des immeubles protégés au titre des monuments historiques en 2009," Journal officiel de la République française, n°0084, 10 April 2010, page 6840.
- Mairie de Juvisy-sur-Orge, "L’observatoire Camille Flammarion," http://juvisy.fr/votre-ville/patrimoine, consulted 15 March 2018.
- Colette Aymard et Laurence-Anne Mayeur, « L’observatoire de Juvisy-sur-Orge, l’« univers d’un chercheur » à sauvegarder », In Situ [online], 29 | 2016, published 13 July 2016, consulted 16 June 2017.
- Touchet, E. “La Vie et L'Oeuvre de Camille Flammarion. L'Astronomie 1925, vol. 39, p. 354.
- Carnets d'observations. “Archives et manuscrits de l'Observatoire de Paris : Fonds Eugène Michel Antoniadi : Ms 1138”, Alidade
- L'Astronomie 1951, vol. 65, p. 356.
- “BENOIT, Antonin.” P. Véron, Dictionnaire des astronomes français 1850-1950., www.obs-hp.fr/dictionnaire/
- P. Véron, dictionnaire des astronomes français 1850-1950, www.obs-hp.fr/dictionnaire/