Large Binocular Telescope
Telescope for optical astronomy / From Wikipedia, the free encyclopedia
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The Large Binocular Telescope (LBT) is an optical telescope for astronomy located on 10,700-foot (3,300 m) Mount Graham, in the Pinaleno Mountains of southeastern Arizona, United States. It is a part of the Mount Graham International Observatory.
Alternative names | First Light |
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Part of | Mount Graham International Observatory Steward Observatory |
Location(s) | Mount Graham, Graham County, Arizona |
Coordinates | 32°42′05″N 109°53′21″W |
Observatory code | G83 |
Altitude | 3,221 m (10,568 ft) |
Built | 1996–2002 (1996–2002) |
First light | 12 October 2005 |
Telescope style | optical telescope double telescope |
Diameter | 8.4 m (27 ft 7 in) |
Collecting area | 111 m2 (1,190 sq ft) |
Focal length | 9.6 m (31 ft 6 in) |
Mounting | altazimuth mount |
Website | www |
Related media on Commons | |
When using both 8.4 m (330 inch) wide mirrors, with centres 14.4 m apart, the LBT has the same light-gathering ability as an 11.8 m (464 inch) wide single circular telescope and the resolution of a 22.8 m (897 inch) wide one.[1]
The LBT mirrors individually are the joint second-largest optical telescope in continental North America, next to the Hobby–Eberly Telescope in West Texas. It has the largest monolithic, or non-segmented, mirror in an optical telescope.
Strehl ratios of 60–90% in the infrared H band and 95% in the infrared M band have been achieved by the LBT.[2]