mercredi 11 février 2009

Henri Prudence Gambey - cercle répétiteur à une lunette



Héliostat de Gambey


Cercle répétiteur à une lunette, Musée de l'Observatoire de Marseille

Henri Prudence Gambey. Born 8 Oct. 1787, Troyes, France. Died 28 Jan.
1847, Paris. Father a clockmaker. Worker & supervisor at Ecole des Arts
et Metiers (Compiegne), also at Chalons-sur-Marne. In Paris, worked for
Ferrat, for Etienne Lenoir, returned to Ferrat 1808. 1809, opened shop at
52 rue du Faubourg, St. Denis. Met & was assisted by Francois Arago.
Built superior circular dividing engine; improved machine tools, new
theodolite. Gold medal at 1819, 1824, & 1829 Paris exhibitions. 1827,
gold medal for meridian circle 162 mm, 238 cm f.l. for Paris Observatory.
Other instruments for Paris Obs., including plans for large equatorial
built after his death. Widow, brothers, workers continued shop until circa
1855.
Theodolites & repeating circles were very finely made, portable theodolite
for Bureau des Longitudes. Heliostats, sextants, equatorial telescope,
astronomical transit, alt-azimuth.

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