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Ritchey-Chrétien望远镜[Ritchey-Chrétien Telescope] [2005-9-30]
iamet 发表在 ¤〖天文〗
| | A type of telescope which uses hyperbolic primary and secondary mirrors. This gives a wide field of view and eliminates spherical aberration and coma. In 1927, Ritchey constructed the successful Ritchey-Chrétien telescope (a 0.5-meter) while working in France. After coming to the U.S., he subsequently began work on the first major such telescope in 1930, a 1-m for the U.S. Naval Observatory. This telescope was finished in 1934, and started life at the U.S. Naval Observatory in Washington, D.C. The Ritchey-Chrétien design was also used for the Kitt Peak 4-meter Mayall telescope. |
学好数理化，走遍天下都不怕！ | |
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