Back التلسكوب الثنائي الكبير Arabic Large Binocular Telescope Catalan تێلێسکۆپی ئێڵ بی تی CKB Velký binokulární dalekohled Czech Large Binocular Telescope German Gran telescopio binocular Spanish تلسکوپ بزرگ دو چشمی Persian Grand Télescope binoculaire French הטלסקופ הבינוקולארי הגדול HE Large Binocular Telescope Hungarian
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| Alternative names | First Light |
|---|---|
| Part of | Mount Graham International Observatory Steward Observatory  |
| Location(s) | Mount Graham, Graham County, Arizona |
| Coordinates | 32°42′05″N 109°53′21″W / 32.701308°N 109.889064°W |
| Observatory code | G83 |
| Altitude | 3,221 m (10,568 ft) |
| 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 |
  Location of Large Binocular Telescope | |
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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.
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]
- ^ "Giant telescope opens both eyes". BBC News. March 6, 2008. Retrieved 2008-03-06.
- ^ Cite error: The named reference
physorg.comwas invoked but never defined (see the help page).