Large Binocular Telescope (LBT) is an optical telescope for astronomy located on Mount Graham (10,700-foot (3,300 m)) in the Pinaleno Mountains of southeastern Arizona, and 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 can give the same light gathering ability as a 11.8 m (39 ft) wide single circular telescope and detail of 22.8 m (75 ft) wide one. Either of its mirrors would be the largest optical telescope in continental North America. Optical performance of the telescope is excellent, and Strehl ratios of 60-90% in the infrared H band and 95% in the infrared M band have been achieved by the LBT.
Read more about Large Binocular Telescope: Project, First Light, Adaptive Optics, In The Media, Discoveries, Instruments, LBT Consortium, Additional Photos, Other MGIO Facilities
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