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Large Binocular Telescope

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Large Binocular Telescope

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LBT Large Binocular Telescope Observatory

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Large Binocular Telescope Adaptive Optics Demonstration

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Large Binocular Telescope

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nikon 20x120 big binoculars

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. The LBT is currently one of the world's most advanced optical telescopes; using two 8.4 m (27 ft) wide mirrors, with centres 14.4 m apart, it has the same light-gathering ability as an 11.8 m (39 ft) wide single circular telescope and detail of a 22.8 m (75 ft) wide one. Its mirrors individually are the joint second-largest optical telescope in continental North America, behind the Hobby–Eberly Telescope in West Texas; it is also 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.
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    • Project 

    • First light 

    • Adaptive optics 

    • In the media 

    • Discoveries and observations 

    • Instruments 

    • LBTO collaboration 

    • Other MGIO facilities