Ritchey-Chrétien望远镜[Ritchey-Chrétien Telescope] - 达人(其实～我是卧底，来自外星)

2005/09/30 | Ritchey-Chrétien望远镜[Ritchey-Chrétien Telescope]
类别(¤〖天文〗) | 评论(0) | 阅读(32) | 发表于 23:30: 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.; 0