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Mount Graham International Observatory

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Mount Graham International Observatory (MGIO) is a division of Steward Observatory, the research arm for the Department of Astronomy at The University of Arizona, in the United States. It is located in southeastern Arizona's Pinaleño Mountains near Mount Graham.

Mount Graham International Observatory
Large Binocular Telescope 2.jpg
The Large Binocular Telescope is the largest telescope of Mount Graham International Observatory.
Alternative namesMGIO Edit this at Wikidata
OrganizationSteward Observatory Edit this on Wikidata
LocationMount Graham, Arizona, US
Coordinates32°42′05″N 109°53′31″W / 32.7013°N 109.892°W / 32.7013; -109.892Coordinates: 32°42′05″N 109°53′31″W / 32.7013°N 109.892°W / 32.7013; -109.892
Altitude3,191 m (10,469 ft) Edit this at Wikidata Edit this at Wikidata
TelescopesHeinrich Hertz Submillimeter Telescope
Large Binocular Telescope
Vatican Advanced Technology Telescope Edit this on Wikidata
Mount Graham International Observatory is located in the United States
Mount Graham International Observatory
Location of Mount Graham International Observatory
Commons page Related media on Wikimedia Commons

Construction of MGIO began in 1989. MGIO currently operates and maintains facilities for three scientific organizations. The first two telescopes, the Vatican Advanced Technology Telescope and the Heinrich Hertz Submillimeter Telescope began operations in 1993. The Large Binocular Telescope, one of the world's largest and most powerful optical telescopes, began operations using mirrors independently in 2004, with joint operations between the two mirrors beginning in 2008.[1]

Public tours of the MGIO are conducted by the Eastern Arizona College's (EAC) Discovery Park Campus between mid-April and mid-October (weather permitting and subject to reservations).

List of facilitiesEdit

See alsoEdit


  1. ^ "Large Binocular Telescope Achieves First Binocular Light" (Press release). Large Binocular Telescope Corporation. 2008-02-28. Archived from the original on 2011-07-25.

External linksEdit