The Indian Astronomical Observatory (IAO) is a high-altitude astronomy station located in Hanle, India and operated by the Indian Institute of Astrophysics. Situated in the Western Himalayas at an elevation of 4,500 meters (14,764 ft), the IAO is one of the world’s highest located sites for optical, infrared and gamma-ray telescopes.[1] It is currently the tenth (see List of highest astronomical observatories) highest optical telescope in the world. It is India’s first dark-sky preserve.[2]
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