英语词汇“Cassegrain telescope”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

Cassegrain telescope

/ˈkasɪɡreɪn

noun

A reflecting telescope in which light reflected from a convex secondary mirror passes through a hole in the primary mirror.Visitors can also see the University Observatory, which houses a 14 inch Schmidt Cassegrain telescope with a cooled CCD (Charge Couple Device) camera....

The tube length is very long compared to a Cassegrain telescope of the same effective focal length.
Easy portability and precision optics are hallmarks of Cassegrain telescopes, and Orion has some of the finest.

Origin

Late 19th century: named after N. Cassegrain (1625–1712), the French astronomer who devised it.

单词	Cassegrain telescope
释义	Cassegrain telescope /ˈkasɪɡreɪn / noun A reflecting telescope in which light reflected from a convex secondary mirror passes through a hole in the primary mirror.Visitors can also see the University Observatory, which houses a 14 inch Schmidt Cassegrain telescope with a cooled CCD (Charge Couple Device) camera.... The tube length is very long compared to a Cassegrain telescope of the same effective focal length. Easy portability and precision optics are hallmarks of Cassegrain telescopes, and Orion has some of the finest. Origin Late 19th century: named after N. Cassegrain (1625–1712), the French astronomer who devised it.
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