Hawaii has approved a plan to build the world's largest telescope on top of Mauna Kea. Here's a preview.
Tim Hornyak
Crave freelancer Tim Hornyak is the author of "Loving the Machine: The Art and Science of Japanese Robots." He has been writing about Japanese culture and technology for a decade. E-mail Tim.
Hawaii's Board of Land and Natural Resources has approved a plan by California and Canadian universities to build the world's largest optical telescope at the summit of Mauna Kea, a dormant volcano in Hawaii.
With construction costs expected to surpass $1 billion, the Thirty Meter Telescope (TMT), seen here in this artist's impression, will be able to observe planets outside our solar system.
2 of 7Courtesy TMT Observatory Corporation
Big reflector
The TMT will consist of primary, secondary, and tertiary mirrors. This artist's impression shows the relative size of a person, at left.
3 of 7Courtesy TMT Observatory Corporation
Primary hexagons
The primary mirror will be nearly 30 meters (98 feet) across, and will consist of 492 hexagonal segments arranged into an f/1 hyperboloidal mirror.
4 of 7Courtesy TMT Observatory Corporation
Light collector
The primary mirror is designed to will give it nine times the collecting area of the world's largest optical telescopes, and the images are expected be three times sharper.
5 of 7Courtesy TMT Observatory Corporation
Tertiary mirror
This artist's impression shows the tertiary mirror at the center of the TMT's segmented primary mirror.
6 of 7Courtesy TMT Observatory Corporation
Schematics
This diagram shows the various tools planned for the TMT. The telescope may be able to view objects some 13 billion light years away.
7 of 7Courtesy TMT Observatory Corporation
Sunset at the top
An illustration of the TMT at sunset. Already home to about a dozen telescopes, Mauna Kea's summit at 13,796 feet is popular with astronomers because it is above the clouds.
