altazimuth

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alt·az·i·muth

 (ăl-tăz′ə-məth)
n.
1. A mounting for astronomical telescopes that permits pointing adjustments in both altitude and azimuth.
2. A telescope having such a mounting.

altazimuth

(ælˈtæzɪməθ)
n
(Astronomy) an instrument for measuring the altitude and azimuth of a celestial body by the horizontal and vertical rotation of a telescope
[C19: from alt(itude) + azimuth]

alt•az•i•muth

(ælˈtæz ə məθ)

n.
an instrument for determining both the altitude and the azimuth of a heavenly body.
[1855–60; alt (itude) + azimuth]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.altazimuth - an instrument that measures the altitude and azimuth of celestial bodies; used in navigation
measuring device, measuring instrument, measuring system - instrument that shows the extent or amount or quantity or degree of something
References in classic literature ?
The instruments provided for the journey consisted of two barometers, two thermometers, two compasses, a sextant, two chronometers, an artificial horizon, and an altazimuth, to throw out the height of distant and inaccessible objects.
But altazimuths (except on Go To scopes; see the section about "smart" telescopes on page 81) do not readily lend themselves to motorized operation, and you have to physically move the telescope in two directions simultaneously to track celestial targets.
Equatorial mounts don't work smoothly near the celestial pole; Dobsonians and other altazimuths can't sweep directly overhead.