- prismatic telescope
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a telescope having an eyepiece at the side or top equipped with a reflecting prism, used for taking sights at steep angles.
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Universalium. 2010.
prismatic telescope
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prismatic telescope — Survey. a telescope having an eyepiece at the side or top equipped with a reflecting prism, used for taking sights at steep angles … Useful english dictionary
telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… … Universalium
prismatic astrolabe — noun : a portable instrument consisting of a small telescope, a 60 degree prism, and a mercury reflecting basin by which determinations of time, latitude, and azimuth may be obtained from star observations … Useful english dictionary
History of the telescope — The earliest known working telescopes appeared in 1608 and are credited to Hans Lippershey and Zacharias Janssen, spectacle makers in Middelburg, and Jacob Metius of Alkmaar. The design of these early refracting telescopes consisted of a convex… … Wikipedia
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