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mathematical technique > frame of reference > coordinate system > astronomical coordinate > horizontal coordinate system
astronomical technique > astrometry > coordinate system > astronomical coordinate > horizontal coordinate system

Preferred term

horizontal coordinate system  

Definition(s)

  • The horizontal coordinate system is a celestial coordinate system that uses the observer's local horizon as the fundamental plane to define two angles: altitude and azimuth. Therefore, the horizontal coordinate system is sometimes called as the az/el system, the alt/az system, or the alt-azimuth system, among others. In an altazimuth mount of a telescope, the instrument's two axes follow altitude and azimuth. (Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Horizontal_coordinate_system)

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http://data.loterre.fr/ark:/67375/MDL-WLMGH1WH-V

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RDF/XML TURTLE JSON-LD Created 10/10/22, last modified 10/10/22