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Keck I and II telescopes on Mauna Kea, Hawaii

Keck I and II telescopes on Mauna Kea, Hawaii

R118/0194

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Credit

DR FRED ESPENAK / SCIENCE PHOTO LIBRARY DR FRED ESPENAK / SCIENCE PHOTO LIBRARY

Caption

The Keck telescopes. The Keck I (right, white) and Keck II telescopes on the dormant volcano Mauna Kea in Hawaii. Keck I was completed in April 1992, but its twin will not be operational until the end of 1996. They are the largest optical telescopes in the world. Each has a main mirror made of 36 1.8 metre hexagonal mirrors, forming a unique sur- face with a total diameter of 10 metres. Each of the 36 mirrors has a specific shape and is mounted on computer-controlled motors that maintain its correct position during use. Keck I and II will be used together as an optical interferometer, where the signals received by the two telescopes are combined in a computer for improved accuracy.

Release details

Model release not required. Property release not required.

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