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望远镜是一种集光装置,它使用透镜或者平面镜收集来自天体的光线。一个主镜将光线反射到一个较小的镜子,小镜子将光线聚到一个焦点,在这里形成天体图像。
A telescope is a light collecting device that uses lenses or mirrors to collect light from a celestial body. A primary mirror reflects the light into a smaller mirror that focuses the light to a focal point where an astrophotography image is formed.