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altazimuth

[al-taz-uh-muhth]

noun

Astronomy.
  1. an instrument for determining both the altitude and the azimuth of a heavenly body.



altazimuth

/ ælˈtæzɪməθ /

noun

  1. an instrument for measuring the altitude and azimuth of a celestial body by the horizontal and vertical rotation of a telescope

“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of altazimuth1

First recorded in 1855–60; alt(itude) + azimuth
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Word History and Origins

Origin of altazimuth1

C19: from alt ( itude ) + azimuth
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Telescope, consisting of a brass tube 3-1/2 in. long with an aperture of 2-3/4 in.; on its original brass tripod, with a serviceable altazimuth mounting.

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The altazimuth can thus determine the altitude and azimuth of objects, hence the name.

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This may be furnished either with an equatorial bearing for the telescope, or an altazimuth arrangement which permits both up-and-down and horizontal motions.

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He himself, however, by much more exact observations, with an excellent altazimuth, reduced the alleged error from 20 minutes to only 4-1⁄2, or to 9⁄40ths of its formerly supposed value.

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The instruments used were altazimuths, constructed under the direction of Prof. Mohn, specially for measuring the parallax of the aurora borealis.

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altar stonealtazimuth coordinate system