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- Craig_telescope abstract "The Craig telescope was the largest refracting telescope (a telescope with a lens) in the world from 1852 to 1857, erected near London, England. It was a great refractor, a large refracting telescope with an achromatic doublet with an aperture of 61 cm (2 feet (24 inches)) and that was completed in 1852 in Wandsworth Common and dismantled around 1857 (although the brick tower probably survived until 1870). Its namesake, the Rev. John Craig, spent a small fortune to produce a uniquely designed telescope with nearly double the aperture of the next largest refracting telescopes, making it the largest refracting telescope in the World for the better part of a decade. However, it had problem with its lens figuring starting from its first light in the summer of 1852. It soon fell into disuse as that same year Craig lost his only son, then his wife in 1854, and lost his brother and was put in jail for 6 weeks in 1856.Craig did not have the lens re-figured and the telescope struggled to achieve his modest goals, which included observations of Earth's Moon and Saturn. It was eventually demolished and Craig moved on to other projects, including opening one of the first indoor skating rinks.The doublet was made with flint glass by Chance Brothers and a plate glass by Thames Plate Glass Company. The mounting was designed by William Gravatt, and featured a 19.5 meter tall brick tower with a 24.5 m long cigar shaped telescope tube (built by Messrs Rennie) slung from the side.The next largest refractors were two 15 inch (38 cm) refractors built by Merz and Mahler of Münich (Joseph Fraunhofer's firm), one at Pulkovo Observatory in Europe and one at Harvard College Observatory in America. The largest telescope at the time was in Ireland, a 6 foot (183 cm) aperture metal mirror by William Parsons, 3rd Earl of Rosse. (see \"Leviathan of Parsonstown\")".
- Craig_telescope wikiPageExternalLink craig.
- Craig_telescope wikiPageExternalLink index.html.
- Craig_telescope wikiPageExternalLink hl=en&q=%22Craig%20telescope%22&um=1&ie=UTF-8&tbo=u&tbs=bks:1&source=og&sa=N&tab=wp&fp=7db4f7af4a13aa89.
- Craig_telescope wikiPageID "28669607".
- Craig_telescope wikiPageLength "4888".
- Craig_telescope wikiPageOutDegree "20".
- Craig_telescope wikiPageRevisionID "525872512".
- Craig_telescope wikiPageWikiLink Achromatic_lens.
- Craig_telescope wikiPageWikiLink Category:Telescopes.
- Craig_telescope wikiPageWikiLink Chance_Brothers.
- Craig_telescope wikiPageWikiLink First_light_(astronomy).
- Craig_telescope wikiPageWikiLink Flint_glass.
- Craig_telescope wikiPageWikiLink Great_refractor.
- Craig_telescope wikiPageWikiLink Harvard_College_Observatory.
- Craig_telescope wikiPageWikiLink Joseph_von_Fraunhofer.
- Craig_telescope wikiPageWikiLink Leviathan_of_Parsonstown.
- Craig_telescope wikiPageWikiLink List_of_largest_optical_telescopes_in_the_19th_century.
- Craig_telescope wikiPageWikiLink Messrs_Rennie.
- Craig_telescope wikiPageWikiLink Pulkovo_Observatory.
- Craig_telescope wikiPageWikiLink Refracting_telescope.
- Craig_telescope wikiPageWikiLink Speculum_metal.
- Craig_telescope wikiPageWikiLink Thames_Plate_Glass_Company.
- Craig_telescope wikiPageWikiLink Visible_spectrum.
- Craig_telescope wikiPageWikiLink Wandsworth_Common.
- Craig_telescope wikiPageWikiLink William_Gravatt.
- Craig_telescope wikiPageWikiLink William_Parsons,_3rd_Earl_of_Rosse.
- Craig_telescope wikiPageWikiLinkText "Craig telescope".
- Craig_telescope built "1852".
- Craig_telescope diameter "2.0".
- Craig_telescope firstLight "1852".
- Craig_telescope focalLength "76".
- Craig_telescope location "Wandsworth Common, London,".
- Craig_telescope mounting "Gravatt alt/azimuth".
- Craig_telescope name "Craig telescope".
- Craig_telescope style "Achromatic Refractor".
- Craig_telescope wavelength Visible_spectrum.
- Craig_telescope wikiPageUsesTemplate Template:Infobox_telescope.
- Craig_telescope wikiPageUsesTemplate Template:Reflist.
- Craig_telescope subject Category:Telescopes.
- Craig_telescope hypernym Telescope.
- Craig_telescope type ArtificialSatellite.
- Craig_telescope comment "The Craig telescope was the largest refracting telescope (a telescope with a lens) in the world from 1852 to 1857, erected near London, England. It was a great refractor, a large refracting telescope with an achromatic doublet with an aperture of 61 cm (2 feet (24 inches)) and that was completed in 1852 in Wandsworth Common and dismantled around 1857 (although the brick tower probably survived until 1870). Its namesake, the Rev.".
- Craig_telescope label "Craig telescope".
- Craig_telescope sameAs Q5181632.
- Craig_telescope sameAs m.0czbxj3.
- Craig_telescope sameAs Q5181632.
- Craig_telescope wasDerivedFrom Craig_telescope?oldid=525872512.
- Craig_telescope isPrimaryTopicOf Craig_telescope.