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William Herschel's 40-foot telescope, also known as the Great Forty-Foot telescope, was a reflecting telescope constructed between 1785 and 1789 at Observatory House in Slough, England. It used a 48-inch (120 cm) diameter primary mirror with a 40-foot-long (12 m) focal length (hence its name "Forty-Foot" ).
Caroline Lucretia Herschel [1] (/ ˈ h ɜːr ʃ əl, ˈ h ɛər ʃ əl / HUR-shəl, HAIR-shəl, [2] German: [kaʁoˈliːnə ˈhɛʁʃl̩]; 16 March 1750 – 9 January 1848) was a German astronomer, [3] whose most significant contributions to astronomy were the discoveries of several comets, including the periodic comet 35P/Herschel–Rigollet, which bears her name. [4]
The William Herschel Telescope on La Palma; The Herschel Space Observatory, successfully launched by the European Space Agency on 14 May 2009. It was the largest space telescope of its kind, until the launch of the James Webb Space Telescope. Herschel Grammar School, Slough; Rue Herschel, a street in the 6th arrondissement of Paris.
The original Observatory House was built, run and used by the astronomer William Herschel, and his sister Caroline. The famous '40-foot telescope' - at that time the largest in the world - was housed there in the late 18th century and early 19th century. [1] [2] The main house was on Windsor Road. There was also a small cottage on the land ...
The Caroline Lucretia Gallery, named after Caroline Herschel, was added to the museum in 2011. The gallery was designed by Hetreed Ross Architects , [ 16 ] and is of a modern design, [ 17 ] with floor-to-ceiling glazing, overhanging eaves and a flat [ 18 ] stainless steel stressed skin roof, [ 19 ] with the solid walls constructed of Bath Stone ...
The NGC expanded and consolidated the cataloguing work of William and Caroline Herschel, and John Herschel's General Catalogue of Nebulae and Clusters of Stars. Objects south of the celestial equator are catalogued somewhat less thoroughly, but many were included based on observation by John Herschel or James Dunlop.
A reflecting telescope by James Short; this English telescope maker produced almost 1400 Gregorian reflectors in the mid-1700s. Mobile versions were used to observe the Transit of Venus . List of largest optical telescopes in the 18th century includes various refractors and reflectors that were active some time between about 1699 to 1801.
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