Altazimuth
an instrument for determining both the and the of a heavenly body.
Historical Examples
On his return home he settled at Westbury, where he erected an altazimuth by Troughton, with a two-and-a-half-foot circle.
The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
We saw that the altazimuth employed at Upsala had no lenses.
Scientific American Supplement, No. 611, September 17, 1887 Various
The observations with the altazimuth are rather more complicated than those with the transit circle.
The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
The altazimuth can thus determine the altitude and azimuth of objects, hence the name.
The New Gresham Encyclopedia. Vol. 1 Part 1 Various
A most important step taken by Airy was the construction of an altazimuth.
The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
The third day he had a full day’s work on the calculations, followed by a night duty with the altazimuth.
The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
This pillar is the support of Airy’s altazimuth, and very nearly marks the place where Flamsteed set up his original sextant.
The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
For many years the instruments in regular use were two only, the transit circle and the altazimuth.
The Royal Observatory Greenwich E. Walter (Edwared Walter) Maunder
noun
an instrument for measuring the altitude and azimuth of a celestial body by the horizontal and vertical rotation of a telescope
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