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The David Dunlap Observatory (DDO) is an astronomical observatory site in Richmond Hill, Ontario, Canada. Established in 1935, it was owned and operated by the University of Toronto until 2008. It was then acquired by the city of Richmond Hill, which provides a combination of heritage preservation, unique recreation opportunities and a celebration of the astronomical history of the site. Its primary instrument is a 74-inch (1.88 m) reflector telescope, at one time the second-largest telescope in the world, and still the largest in Canada. Several other telescopes are also located at the site, which formerly also included a small radio telescope. The scientific legacy of the David Dunlap Observatory continues in the Dunlap Institute for Astronomy & Astrophysics, a research institute at the

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  • David Dunlap Observatory (en)
  • David Dunlap Observatory (de)
  • Observatorio David Dunlap (es)
  • Observatoire David Dunlap (fr)
  • David Dunlap Observatory (it)
  • デービッド・ダンラップ天文台 (ja)
  • Observatório David Dunlap (pt)
  • Обсерватория им. Дэвида Данлэпа (ru)
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  • デービッド・ダンラップ天文台(David Dunlap Observatory:略称DDO)はカナダの天文台である。オンタリオ州リッチモンドヒルにある、トロント大学の天文台である。 (ja)
  • Обсерватория им. Дэвида Данлэпа — астрономическая обсерватория, основанная в 1935 году в Ричмонд Хилл, Онтарио, Канада. Обсерватория принадлежит . (ru)
  • The David Dunlap Observatory (DDO) is an astronomical observatory site in Richmond Hill, Ontario, Canada. Established in 1935, it was owned and operated by the University of Toronto until 2008. It was then acquired by the city of Richmond Hill, which provides a combination of heritage preservation, unique recreation opportunities and a celebration of the astronomical history of the site. Its primary instrument is a 74-inch (1.88 m) reflector telescope, at one time the second-largest telescope in the world, and still the largest in Canada. Several other telescopes are also located at the site, which formerly also included a small radio telescope. The scientific legacy of the David Dunlap Observatory continues in the Dunlap Institute for Astronomy & Astrophysics, a research institute at the (en)
  • Das David Dunlap Observatory ist ein astronomisches Observatorium der University of Toronto im Norden der Stadt in Richmond Hill, Ontario. Es befindet sich auf einem ca. 76 Hektar großen Gelände. Das Hauptteleskop des Observatoriums ist ein großes 1,88-m-Spiegelteleskop, das einst zweitgrößte Teleskop der Welt und heute immer noch größte Teleskop Kanadas. Neben dem großen Spiegelteleskop befinden sich noch weitere kleine Teleskope auf dem Gelände. Früher gab es sogar ein kleines Radioteleskop. Da das Observatorium mit 238 m ü. NN relativ tief liegt und mittlerweile von zahlreichen Siedlungen umgeben ist (und dadurch von vielen künstlichen Lichtquellen), ist die Leistungsfähigkeit deutlich geringer als bei anderen, abgelegeneren Observatorien. Trotzdem wird das Observatorium noch immer für (de)
  • El Observatorio David Dunlap (nombre original en inglés: David Dunlap Observatory, DDO) es una gran instalación astronómica situada justo al norte de Toronto, en Richmond Hill, Ontario (Canadá). Ubicado en una propiedad de 76 hectáreas, fue propiedad de la Universidad de Toronto, que lo utilizó desde su establecimiento en 1935 hasta 2008. Posteriormente ha sido dirigido por la Real Sociedad Astronómica de Canadá (Centro de Toronto). Su instrumento primario es un telescopio reflector de 74 pulgadas (1,88 m), el segundo más grande del mundo en su época, y todavía el más grande en Canadá. (es)
  • L'observatoire David Dunlap (David Dunlap Observatory ou DDO en anglais) est un observatoire astronomique situé au Canada, à Richmond Hill, au nord de l'agglomération de Toronto, en Ontario. L'observatoire est aujourd'hui propriété de la ville de Richmond Hill qui en a fait un musée à la fois scientifique et historique. L'instrument le plus important est un télescope au miroir de diamètre 1,88 m, qui fut en son temps le deuxième plus grand télescope au monde, et qui demeure à ce jour le plus grand du Canada. Il y a bien d’autres télescopes dans ce musée, dont un radiotélescope. La tradition de recherche de l'observatoire est perpétuée par l'Institut Dunlap d'Astronomie & d'Astrophysique, une antenne de l'université de Toronto créée en 2008. (fr)
  • Il David Dunlap Observatory (abbreviato in DDO) è un osservatorio astronomico gestito dall'Università di Toronto, situato all'interno di un parco nel nord della città di Richmond Hill, nell'Ontario, in Canada. L'osservatorio fu aperto il 31 maggio 1935 e ha ripreso le sue attività, dopo un periodo di chiusura, nel luglio 2009. (it)
  • O Observatório David Dunlap (em inglês: David Dunlap Observatory, também por vezes referido como DDO) é um observatório astronômico localizado em Richmond Hill, Ontário, Canadá. Foi anteriormente propriedade da Universidade de Toronto. Possui um telescópio refletor de 1,88 metro de diâmetro, que foi a certo ponto o segundo maior do mundo, e ainda é o maior do Canadá. Entre suas descobertas estão o fornecimento das primeiras evidências mostrando que Cygnus x-1 é um buraco negro, e que a Estrela Polar estava estabilizando e aparentava "cair fora" da variável cefeida. Devido à urbanização em torno do observatório, sua habilidade de observação foi diminuido, e devido à poluição visual, foi vendida em 2008, embora possa realizar observações espectroscópicas, e ainda seja utilizada como centro d (pt)
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  • David Dunlap Observatory (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Construction_of_Dunlap_Observatory_dome.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/David_Dunlap.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/David_Dunlap_Observatory_1935.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/David_Dunlap_Observatory_Concept_Sketch.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Dunlap_Observatory_Administration_Building.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Mirror_installation_at_observatory.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Queue_at_the_Dunlap_Observatory.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Dominion_Astrophysical_Observatory_front.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/100inchHooker.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Dunlap_Observatory.jpg
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