Superlative Primary Mirrors
The largest optical telescope in the world as of 2009 to use a non-segmented single-mirror as its primary mirror is the 8.2 m (8.7 yards) Subaru telescope of the National Astronomical Observatory of Japan, located in Mauna Kea Observatory on Hawaii since 1997; however, this is not the largest diameter single mirror in a telescope, the U.S./German/Italian Large Binocular Telescope has two 8.4 m (9.2 yards) mirrors (which can be used together for interferometric mode). Both of these are smaller than the 10 m segmented primary mirrors on the two Keck telescope. Radio and submillimeter telescopes use much larger dishes or antennae, which do not have to be made as precisely as the mirrors used in optical telescopes. The Hubble Space Telescope has a 2.4 m (7 ft 10 in) primary mirror.
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Famous quotes containing the words superlative, primary and/or mirrors:
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—Ralph Waldo Emerson (1803–1882)
“The primary imperative for women who intend to assume a meaningful and decisive role in today’s social change is to begin to perceive themselves as having an identity and personal integrity that has as strong a claim for being preserved intact as that of any other individual or group.”
—Margaret Adams (b. 1916)
“Our age is very cheap and intelligible. Unroof any house, and you shall find it. The well-being consists in having a sufficiency of coffee and toast, with a daily newspaper; a well glazed parlor, with marbles, mirrors and centre-table; and the excitement of a few parties and a few rides in a year.”
—Ralph Waldo Emerson (1803–1882)