| 释义 |
cas·se·grain·i·an telescope AHDkasə|grānēən- 基本英英 🌏一种反射型望远镜;卡塞格伦望远镜
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 |