The Keck Observatory

The W. M. Keck Observatory

The Keck Observatory

A black hole with the mass of 3.6 million Suns is among the discoveries made using the twin giant telescopes of the W. M. Keck Observatory on Mauna Kea, Hawaii.

With domes standing at the equivalent of eight storeys in height and main mirrors measuring 10m in diameter, these are – individually – the second-largest optical telescopes in the world. Their location atop a 4,200m dormant volcano minimises the effects of clouds and turbulence. Keck I was completed in 1992; Keck II in 1996.

Image: The W. M. Keck Observatory (credit: NASA/JPL)

Watch and listen to clips from past programmes TV clips [3]

The W. M. Keck Observatory


There are twin telescopes on Mauna Kea, Hawaii.

About The Keck Observatory

The W. M. Keck Observatory is a two-telescope astronomical observatory at an elevation of 4,145 meters (13,600 ft) near the summit of Mauna Kea in the U.S. state of Hawaii. Both telescopes feature 10 m (33 ft) primary mirrors, currently among the largest astronomical telescopes in use. The combination of an excellent site, large optics and innovative instruments has created the two most scientifically productive telescopes on Earth.

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