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- California_Extremely_Large_Telescope abstract "The California Extremely Large Telescope (CELT) was a proposal for an extremely large telescope design first proposed in the 1990s by a consortium of Californian Universities. The design was for a segmented 30 m diameter astronomical telescope. The CELT had a positive reception and continued to be developed, and was renamed The Thirty Meter Telescope around 2003-4. The CELT was one of the earlier and more successful proposals for Extremely large telescopes.The optical design for CELT is a Ritchey-Chretien two-mirror system, with a segmented mirror mosaic with 1080 segments. This rather naturally provides a large, 20 arcminute field of view with less than 0.5 arcsecond images (100% enclosed energy). This focus is free of coma and only suffers from astigmatism, which grows quadratically with field angle. The primary will be 30 metres (98 ft) in diameter, and for compactness, the primary f-ratio will be f/1.5. The final focus will be f/15, delivering a final focus with about 2 mm/arcsecond as its plate scale. Such a giant telescope produces very large seeing-limited images, a challenge for the design of seeing-limited scientific instruments. The 20 arcminute field is 2.6 metres (8.5 ft) in diameter.".
- California_Extremely_Large_Telescope wikiPageExternalLink celt.ucolick.org.
- California_Extremely_Large_Telescope wikiPageID "8423985".
- California_Extremely_Large_Telescope wikiPageRevisionID "570754748".
- California_Extremely_Large_Telescope hasPhotoCollection California_Extremely_Large_Telescope.
- California_Extremely_Large_Telescope subject Category:Telescopes.
- California_Extremely_Large_Telescope type Artifact100021939.
- California_Extremely_Large_Telescope type Device103183080.
- California_Extremely_Large_Telescope type Instrument103574816.
- California_Extremely_Large_Telescope type Instrumentality103575240.
- California_Extremely_Large_Telescope type Magnifier103709206.
- California_Extremely_Large_Telescope type Object100002684.
- California_Extremely_Large_Telescope type PhysicalEntity100001930.
- California_Extremely_Large_Telescope type ScientificInstrument104147495.
- California_Extremely_Large_Telescope type Telescope104403638.
- California_Extremely_Large_Telescope type Telescopes.
- California_Extremely_Large_Telescope type Whole100003553.
- California_Extremely_Large_Telescope comment "The California Extremely Large Telescope (CELT) was a proposal for an extremely large telescope design first proposed in the 1990s by a consortium of Californian Universities. The design was for a segmented 30 m diameter astronomical telescope. The CELT had a positive reception and continued to be developed, and was renamed The Thirty Meter Telescope around 2003-4.".
- California_Extremely_Large_Telescope label "California Extremely Large Telescope".
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- California_Extremely_Large_Telescope sameAs California_Extremely_Large_Telescope.
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- California_Extremely_Large_Telescope isPrimaryTopicOf California_Extremely_Large_Telescope.