Multiple Mirror Telescope

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Multiple Mirror Telescope

(MMT) A reflecting telescope of novel design, sited at the Fred L. Whipple Observatory, on Mount Hopkins, near Tucson, Arizona at an altitude of 2600 meters. It was fully operational in 1980. The telescope, a joint project of the Smithsonian Institution and the University of Arizona, was in 1998 converted to a single-mirror instrument of diameter 6.5 meters (see MMT).

The original telescope was equivalent in light-gathering power to a single 4.5-meter mirror. It comprised six identical mirrors, 1.8 meters in diameter, arranged symmetrically about a central axis on an altazimuth mounting. A complex alignment and electronic guidance system brought all six images to a common focus, with one focus for optical work and another for infrared. The system was housed in a building that co-rotated on a rail with the telescope.

Collins Dictionary of Astronomy © Market House Books Ltd, 2006
References in periodicals archive ?
Astronomers could get away with such a strategy at the Multiple Mirror Telescope (MMT), because its remote site is excellent for viewing.
(The first telescope with a rotating building seems to have been the Multiple Mirror Telescope on Mt.
I followed the winding mountain road back to the visitors' center where, nearby, I could see the structure that once held the six mirrors of the Multiple Mirror Telescope now blindly starring upward.
On March 3 of this year, Robert Marcialis and his colleagues from the University of Arizona in Tucson pointed the Multiple Mirror Telescope of Arizona's Mt.
There Brocious gave us a tour of the new Multiple Mirror Telescope (MMT), an innovative instrument consisting of six identical 1.8-meter (72-inch) mirrors working in unison on an altazimuth mount.
When the Multiple Mirror Telescope (MMT) was completednine years ago, astronomers waited eagerly to see whether this most innovative of telescopes would really work.
McCray salts the text with diverse anecdotes, such as when an insurance claim was filed after the 450-ton rotating building (not dome, building) of the Multiple Mirror Telescope struck a car, or when corporate executives pulled up to NOAO in a limousine and supposedly threatened a lawsuit that could sink the Gemini project.
In view of the success of the Multiple Mirror Telescope on Mt.

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