An observatory at an altitude of 2340 m on Mount Hopkins, 56 km south of Tucson, Arizona, owned and operated by the Smithsonian Astrophysical Observatory. It was opened in 1968 as Mount Hopkins Observatory and was renamed in 1982 in honour of F. L. Whipple, a former SAO director. Its main instruments are the 1.5-m Tillinghast reflector, opened in 1970; a 1.2-m reflector, opened in 1990; a 10-m optical gamma-ray reflector opened in 1968; and the 1.3-m Peters Automated Infrared Imaging Telescope (PAIRITEL), originally used for the Two-Micron All-Sky Survey (2MASS). On the summit of Mount Hopkins is the MMT Observatory, jointly operated by the SAO and the University of Arizona. An array of gamma-ray telescopes called the Very Energetic Radiation Imaging Telescope Array System (VERITAS) began operation in 2007.
http://linmax.sao.arizona.edu/help/FLWO/whipple.html Official observatory website.
Subjects: Astronomy and Astrophysics.