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Kitt Peak National Observatory

Kitt Peak National Observatory, usually referred to as KPNO, is an astronomical observatory on a 6,875 ft peak of the Quinlan Mountains[?] in the Arizona-Sonoran Desert[?] on the Tohono O'odham Nation, 55 miles southwest of Tucson, Arizona. It is part of the National Optical Astronomy Observatory[?] (NOAO).

Kitt Peak was selected in 1958 as the site for a national observatory under contract with the National Science Foundation (NSF) and was administered by the Association of Universities for Research in Astronomy[?], the land being leased from the Tohono O'odham under a perpetual agreement. In 1982 the National Optical Astronomy Observatories was formed to consolidate the management of three optical observatories - Kitt Peak National Observatory, the National Solar Observatory[?] facilities at Kitt Peak and Sacramento Peak, New Mexico, and the Cerro Tololo Observatory[?] in Chile.

The principal instruments at the KPNO are the Mayall 4 metre telescope; the WIYN 3.5 metre telescope and further 2.1 m, 1.3 m, 0.9 m, and 0.4 m reflecting telescopes.

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