About: Nicholas U. Mayall Telescope

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The Nicholas U. Mayall Telescope, also known as the Mayall 4-meter Telescope, is a four-meter (158 inches) reflector telescope located at the Kitt Peak National Observatory in Arizona and named after Nicholas U. Mayall. It saw first light on February 27, 1973, and was the second-largest telescope in the world at that time. Initial observers included David Crawford, Nicholas Mayall, and Arthur Hoag. It was dedicated on June 20, 1973 after Mayall's retirement as director. The mirror has an f/2.7 hyperboloidal shape. It is made from a two-foot (61 cm (24 in)) thick fused quartz disk that is supported in an advanced-design mirror cell. The prime focus has a field of view six times larger than that of the Hale reflector. It is host to the Dark Energy Spectroscopic Instrument. The identical Víct

Attributes	Values
rdf:type	yago:WikicatTelescopes yago:Artifact100021939 yago:Device103183080 yago:Instrument103574816 yago:Instrumentality103575240 yago:Magnifier103709206 yago:Object100002684 yago:PhysicalEntity100001930 yago:ScientificInstrument104147495 yago:Telescope104403638 yago:Whole100003553 ArtificialSatellite
rdfs:label	Telescopio Mayall (es) Télescope Mayall (fr) Telescopio Mayall (it) Nicholas U. Mayall Telescope (en) Mayalls 4-metersteleskop (sv) 梅奥尔望远镜 (zh)
rdfs:comment	Il telescopio Mayall, dedicato a Nicholas U. Mayall, direttore dell'osservatorio di Kitt Peak per 11 anni, è un telescopio riflettore con uno specchio del diametro di 4 metri, di tipo Cassegrain. La sua prima luce è stata nel 1973 e nell'osservatorio di Cerro Tololo si trova un altro telescopio identico a questo. La cupola è posta su una torre alta 56 metri e resistente a venti di 193 Km/h, dentro la quale c'è un pilastro di cemento che regge il telescopio; nel 1997 sono stati aggiunti 22 sfoghi d'aria per controllarne meglio la circolazione. (it) Mayalls 4-metersteleskop, även kallat Nicholas U. Mayall-teleskopet, är ett fyra meter reflektorteleskop beläget vid Kitt Peak-observatoriet i södra Arizona, uppkallat efter den amerikanske astronomen . (sv) 梅奥尔望远镜（Mayall Telescope）是位于美国亚利桑那州基特峰国立天文台的一架4米口径光学望远镜，是上口径最大的一台望远镜。该望远镜建成于1973年2月27日，耗资1,000万美元。在同年6月20日举行的望远镜命名典礼上，美国国家科学基金会的会长宣布这台望远镜以曾在1960－1970年期间担任基特峰国立天文台台长的（Nicholas Mayall）博士的名字命名。 (zh) El telescopio Nicholas U. Mayall, también conocido como el telescopio Mayall de 4 metros, es un telescopio reflector de cuatro metros (158 pulgadas) ubicado en el Observatorio Nacional Kitt Peak en Arizona y que lleva el nombre de Nicholas U. Mayall. Vio la primera luz el 27 de febrero de 1973, y era el segundo telescopio más grande del mundo en ese momento. Los observadores iniciales incluyeron a , Nicholas Mayall y . Se inauguró el 20 de junio de 1973, después de la retirada de Mayall como director. El espejo tiene una forma hiperboloidal f/2.7. Está hecho de un disco de cuarzo fundido de dos pies (61 cm) de espesor que es compatible con una celda de espejo de diseño avanzado. El foco principal tiene un campo de visión seis veces mayor que el del reflector Hale. Es el anfitrión del . (es) The Nicholas U. Mayall Telescope, also known as the Mayall 4-meter Telescope, is a four-meter (158 inches) reflector telescope located at the Kitt Peak National Observatory in Arizona and named after Nicholas U. Mayall. It saw first light on February 27, 1973, and was the second-largest telescope in the world at that time. Initial observers included David Crawford, Nicholas Mayall, and Arthur Hoag. It was dedicated on June 20, 1973 after Mayall's retirement as director. The mirror has an f/2.7 hyperboloidal shape. It is made from a two-foot (61 cm (24 in)) thick fused quartz disk that is supported in an advanced-design mirror cell. The prime focus has a field of view six times larger than that of the Hale reflector. It is host to the Dark Energy Spectroscopic Instrument. The identical Víct (en) Le télescope Mayall, nommé en l'honneur de l'astronome Nicholas Mayall (1906-1993), est un des télescopes installés à l'observatoire de Kitt Peak, en Arizona. C'est un télescope dont le miroir primaire mesure 4 mètres de diamètre. La construction du bâtiment abritant le télescope a commencé en 1968 et s'est terminée en 1970. Le miroir primaire est ouvert à 2,7, ce qui est courant pour des miroirs de cette période, et le télescope possède trois foyers optiques : (fr)
foaf:homepage	http://www.noao.edu/outreach/kptour/mayall.html
foaf:depiction
dcterms:subject	Astronomical observatories in Arizona Buildings and structures in Pima County, Arizona Kitt Peak National Observatory NOIRLab
Wikipage page ID	24332196 (xsd:integer)
Wikipage revision ID	1117261880 (xsd:integer)
Link from a Wikipage to another Wikipage	List of astronomical observatories List of largest optical reflecting telescopes David Crawford (astronomer) Lick Observatory List of largest optical telescopes in the 20th century Coefficient of thermal expansion Galaxy George Ellery Hale Andromeda Galaxy Stellar spectrum Harlan J. Smith Telescope Harlan James Smith Palomar Observatory McDonald Observatory COVID-19 Titan (moon) Dark Energy Spectroscopic Instrument Fused quartz Coudé focus Dark energy Nicholas Mayall Nicholas U. Mayall Owens-Illinois Telescope Hale Telescope Arthur Hoag Astronomical observatories in Arizona Buildings and structures in Pima County, Arizona Kitt Peak National Observatory Chile C. Donald Shane C. Donald Shane telescope Pluto Kitt Peak National Observatory Methane Milky Way NOIRLab Cerro Tololo Inter-American Observatory List of the largest optical telescopes in North America Lists of telescopes First light (astronomy) Víctor M. Blanco Telescope Hale reflector Prime focus Ritchey–Chrétien
Link from a Wikipage to an external page	https://www.researchgate.net/publication/253528166_Active_optics_upgrade_to_the_KPNO_4-m_Mayall_telescope https://airandspace.si.edu/collection-objects/support-rod-stairs-telescope-model-reflecting-mayall http://www.noao.edu/outreach/kptour/mayall.html

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