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SlideshowReport

The 10-m Keck Telescopes

Description
Located on the dormant (and hopefully extinct) Mauna Kea volcano in Hawaii, these huge twin
telescopes each consist of 36 hexagonal mirrors measuring 1.8 m (5.9 ft) across. Each Keck
telescope has the light-gathering, resolving, and magnifying ability of a single mirror 10 m in diameter.
Inset: View down the Keck I telescope. The hexagonal apparatus near the top of the photograph shows
the housing for the 1.4-m secondary mirror. (
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