Mount Graham International Observatory

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
LBT Pinaleno Mountains.40936.JPG
The Large Binocular Telescope is visible on top of the ridge, right of center. At the center, the Vatican Advanced Technology Telescope and the Heinrich Hertz Submillimeter Telescope are visible in the full-size image.
Alternative namesMGIO Edit this at Wikidata
LocationMount Graham, Graham County, Arizona
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
Mount Graham International Observatory is located in the United States
Mount Graham International Observatory
Location of Mount Graham International Observatory
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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).[citation needed]

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