of Mauna Kea volcano in Hawaii as it has been selected as the site for construction of the world's largest optical telescope with a 30 m diameter mirror. This location is already host to 12 telescopes, several of them are already among the largest instruments on Earth.
I visited the 13,803 ft (4,207 m) summit to see this astronomical heaven in August 2007 when I snapped this image of the Subaru (Japan) and Keck I and II (U.S.) telescopes getting ready for their observing session for the evening as the sun was setting:
Wednesday, July 22, 2009
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