Definition of altazimuth in English:


Syllabification: alt·az·i·muth
Pronunciation: /alˈtazəməTH


  • 1 (also altazimuth mount or mounting) Astronomy A telescope mounting that moves in azimuth (about a vertical axis) and in altitude (about a horizontal axis). Compare with equatorial mount.
    More example sentences
    • The Dobsonian design is the most popular type of altazimuth mounting used on astronomical telescopes.
    • Scopes with altazimuth mounts are easy to set up and use, and require no special expertise to use properly.
    • Even with this disadvantage, the altazimuth mounting will be the primary mounting for very large telescopes to be constructed in the future.
  • 1.1 (also altazimuth telescope) A telescope on an altazimuth mounting.
    More example sentences
    • Of course, everything below about 80 degrees altitude was very easy to find; all altazimuth telescopes have this quirk.
    • A lot of my variables are near bright stars or distinctive star patterns; thus easy to find with my noncomputerized altazimuth telescope or binoculars.
    • All are fully-steerable altazimuth telescopes capable of pointing and tracking over zenith angles from 1 to 60 degrees.
  • 2A surveying instrument for measuring vertical and horizontal angles, resembling a theodolite but larger and more precise.
    More example sentences
    • This is an altazimuth theodolite of an improved pattern now used on the Ordnance Survey.


mid 19th century: blend of altitude and azimuth.

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