NOUN
- an instrument that measures the altitude and azimuth of celestial bodies; used in navigation
How To Use altazimuth In A Sentence
- All are fully-steerable altazimuth telescopes capable of pointing and tracking over zenith angles from 1 to 60 degrees.
- Even with this disadvantage, the altazimuth mounting will be the primary mounting for very large telescopes to be constructed in the future.
- Of course, everything below about 80 degrees altitude was very easy to find; all altazimuth telescopes have this quirk.
- While the altitude axis of an altazimuth mount may bend, the bending is constant and can be compensated by realignment of the tube or optics.
- Ransome and May, to construct an altazimuth with three-foot circles, and a five-foot telescope, in 1847. History of Astronomy
- 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. Myths and Marvels of Astronomy
- The camera and lens that I use habitually for photographing cloud forms -- not their angular height -- was planted a few feet from the altazimuth with which M. Ekholm was observing, and while he was measuring the necessary angles I took a picture of the clouds. Scientific American Supplement, No. 611, September 17, 1887
- The Dobsonian design is the most popular type of altazimuth mounting used on astronomical telescopes.
- This is a remarkable result, and shows conclusively the superiority of the altazimuth to the photographic method of measuring the heights of clouds. Scientific American Supplement, No. 611, September 17, 1887
- Since altazimuth telescope mounts usually have a limit in their ability to track high elevation passes through culmination, especially at near-zenith transits because of the large azimuth swings required, the mount can start falling behind.