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altazimuth mounting
Book article from: A Dictionary of Astronomy
altazimuth mounting A method of mounting a telescope so that it can pivot up and...can easily compensate for the varying movements and field rotation, the altazimuth mounting has been adopted for large telescopes as it simplifies construction...
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altazimuth
Book article from: The Oxford Pocket Dictionary of Current English
...mə[unvoicedth] / • n. 1. (also altazimuth mount or mounting ) Astron. a telescope mounting that moves...Compare with equatorial mount . ∎ (also altazimuth telescope ) a telescope on such a mounting. 2. a surveying...
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Downing, Arthur Matthew Weld
Dictionary entry from: Complete Dictionary of Scientific Biography
...and the circle computations. Reduction of the circle, altazimuth, and equatorial observations came to constitute his major...one of four regular observers with the transit circle and altazimuth. Following his election as fellow of the Royal Astronomical...
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equatorial mounting
Book article from: A Dictionary of Astronomy
...recently almost all large telescopes were on equatorial mountings. Some very large instruments now have computer-controlled altazimuth mountings . Designs of equatorial mounting include the English , fork , German , horseshoe , and Springfield mountings .
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Ramsden, Jesse
Dictionary entry from: Complete Dictionary of Scientific Biography
...supplied many of the observatories of Europe with new achromatic telescopes equipped with accurately divided circles. The altazimuth instrument he built for Piazzi for the observatory at Palermo was equipped with a five-foot-diameter vertical circle...
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Dobsonian telescope
Book article from: A Dictionary of Astronomy
Dobsonian telescope A Newtonian telescope on a particular type of altazimuth mounting. The base is a flat board, on which rotates an open-topped box; the altitude axis of the telescope rests in V-shaped...
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Phillips, Theodore Evelyn Reece
Dictionary entry from: Complete Dictionary of Scientific Biography
...Phillips began systematic observation of the planets, especially Jupiter and Mars, with a nine-and-a-quarterinch altazimuth reflector. He continued his observations, with that instrument when he moved to Croydon and later, in Ashstead, when he...
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Serrurier truss
Book article from: A Dictionary of Astronomy
...centre of gravity of the assembly. This box is attached to the declination axis of the mounting (or the altitude axis in an altazimuth mounting ). The triangular framework ensures that strains and loads are carried evenly around the tube, whatever the orientation...
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Special Astrophysical Observatory
Book article from: A Dictionary of Astronomy
...of 2070 m on Mount Pastukhova in the Caucasus Mountains of southern Russia. It is the site of the 6-m Large Altazimuth Telescope (in Russian, Bol'shoi Teleskop Azimutal'nyi, or BTA), opened in 1975; the mirror was replaced in 1979...
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radio telescope
Book article from: A Dictionary of Astronomy
...Earth and, in some cases, by the movement of the dishes. Parabolic dishes are normally steerable, the larger ones being on altazimuth mountings, but many interferometers consist of arrays of static antennas which either have a fixed beam or can be steered...
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