Arago Telescope
Arago telescope (''Lunette Arago'') is a 38 cm (15 inch) aperture refracting telescope at Paris Observatory, installed in 1857. Francois Arago ordered this telescope from the telescope making firm Lebreours in 1839, and after a protracted development was completed by 1855. The name ''Lunette Arago'' (Arago refractor) is a modern name for the telescope, and other large refractor of Paris observatory, is the one at Meudon. It has gone by a variety of names having to do with various aspects of the telescope, such as its aperture, or location on the East tower of the Paris observatory, or its equatorial mount made by Brunner. In one journal report it was called the 'east equatorial' for example, in another instance '38 cm refractor'. In French language it has been called the ''La lunette équatoriale de 38 cm de l'Observatoire de Paris''. The telescope had an objective lens 14 ''pouces'' across, which is a name for Paris Inches; this works out to about 38 cm (14.96 ...
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