Lexic.us

Definition of Cassegrainian telescope

1. Noun. A reflecting telescope that has a paraboloidal primary mirror and a hyperboloidal secondary mirror; light is brought to a focus through an aperture in the center of the primary mirror.

Lexicographical Neighbors of Cassegrainian Telescope

Literary usage of Cassegrainian telescope

Below you will find example usage of this term as found in modern and/or classical literature:

1. Ferguson's Lectures on Select Subjects in Mechanics, Hydrostatics by James Ferguson (1814)
"A cassegrainian telescope, i5± inches in focal length, will mag- nify, according to the table, 93 times; while a Gregorian one, with a similar speculum, ..."

2. Treatise on Optics by David Brewster, Alexander Dallas Bache (1854)
"Magnifying paw 1 3-0 35 to 100 90 300 100 400 500 14 2 4-5 3 6-3 35 75 4 7-6 120 7 12-2 200 300 800 100 300 12 18-0 1200 cassegrainian telescope. 800 (209. ..."

3. Elements of Natural Philosophy by William Holmes Chambers Bartlett (1859)
"... and called the cassegrainian telescope, whi< .is represented in the figure. Its magnifying power Graphic representation; Magnifying power; Fig. ..."

4. Abstracts of the Papers Printed in the Philosophical Transactions of the by Royal Society (Great Britain) (1832)
"On the Light of the cassegrainian telescope, compared with that of the ... The author having remarked the performance of a cassegrainian telescope, ..."

5. The Monthly Review by Ralph Griffiths (1814)
"Having prepared a circular piece of paste-board to close the end of the Cassegrainian telescope, I drew a number of concentric circles on it, ..."

6. Descriptive Astronomy by George Frederick Chambers (1867)
"THE cassegrainian telescope. The cassegrainian telescope is similar in all respects to the Gregorian, except that the smaller speculum is convex instead of ..."

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