Up Above the World So High

Exploring the local and distant Universe from the world’s largest and most scientifically productive telescopes on Earth. Learn more

Up Above the World So High

Exploring the local and distant Universe from the world’s largest and most scientifically productive telescopes on Earth. Learn more

Up Above the World So High

Exploring the local and distant Universe from the world’s largest and most scientifically productive telescopes on Earth. Learn more

Science

The observing section provides scientists with resources, including access to the observer login area and telescope schedule.

Technology

The Keck telescopes host a suite of state-of-the-art observing instruments and adaptive optics capabilities to collect and analyze astronomical data.

Community

Our mission is to advance the frontiers of astronomy, inspiring the imagination of all. Learn how you can get involved.

About W. M. Keck Observatory

The twin Keck Observatory telescopes are among the world’s most scientifically productive optical and infrared telescopes. Each telescope weighs 300 tons and operates with nanometer precision. The telescopes’ primary mirrors are 10-meters in diameter and are each composed of 36 hexagonal segments that work in concert as a single piece of reflective glass. Keck Observatory is a 501(c)3 supported by both public funding sources and private philanthropy. 

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W. M. Keck Observatory takes its responsibility for good stewardship of Maunakea very seriously. That’s why we are deeply committed to full transparency for our staff and our community as we work to understand how, why, and to what extent a small amount of hydraulic fluid has been seeping from our hydraulic system at our Maunakea facility.

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Keck Observatory: Home of the largest and most scientifically productive telescopes on Earth