How To Use Altazimuth In A Sentence
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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.
Five Weeks in a Balloon
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Even with this disadvantage, the altazimuth mounting will be the primary mounting for very large telescopes to be constructed in the future.
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This figure shows the peculiar ocular part of the altazimuth, with the vertical and horizontal circles.
Scientific American Supplement, No. 611, September 17, 1887
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Of course, everything below about 80 degrees altitude was very easy to find; all altazimuth telescopes have this quirk.
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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.
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Ransome and May, to construct an altazimuth with three-foot circles, and a five-foot telescope, in 1847.
History of Astronomy
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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
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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
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The Dobsonian design is the most popular type of altazimuth mounting used on astronomical telescopes.
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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
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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.
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All are fully-steerable altazimuth telescopes capable of pointing and tracking over zenith angles from 1 to 60 degrees.
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Römer, star places, 10; invention of equatoreal and transit instrument, 120; of altazimuth, 121; velocity of light, 231; satellite transit on Jupiter, 291
A Popular History of Astronomy During the Nineteenth Century Fourth Edition
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Scopes with altazimuth mounts are easy to set up and use, and require no special expertise to use properly.
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It resembles an astronomical altazimuth, but instead of a telescope it carries an open tube without any lenses.
Scientific American Supplement, No. 611, September 17, 1887
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We saw that the altazimuth employed at Upsala had no lenses.
Scientific American Supplement, No. 611, September 17, 1887
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A lot of my variables are near bright stars or distinctive star patterns; thus easy to find with my noncomputerized altazimuth telescope or binoculars.
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Another highly entertaining presentation was by Dennis di Cicco of Sky and Telescope magazine as he described his construction of a 16-inch ‘sidewalk’ altazimuth telescope.
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However, in recent years computerized altazimuth mounts have appeared which use motors to automatically compensate for the sky's motion, though these are generally a great deal more expensive.
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The instrument which they employ to measure the angles from which to deduce the height of the clouds is a peculiar form of altazimuth that was originally designed by Prof. Mohn, of Christiania, for measuring the parallax of the aurora borealis.
Scientific American Supplement, No. 611, September 17, 1887
