coelostat是什么意思
2023-12-05 05:17:17
coelostat
n. [天]定天镜( 观测或拍摄天体时镜面与地轴一同转动可使图像固定不动)
英英释义
Noun
- optical device used to follow the path of a celestial body and reflect its light into a telescope; has a movable and a fixed mirror
例句
- As a coelostat, MA tracks the motion of celestial objects observed at their meridian passages. MA作为定天镜跟踪天体的运动，望远镜在天体中天前后进行观测。
- The aperture of the coelostat mirror is 460 mm. The objective mirror, 330 mm in diameter, has primary focal length of 21 m and Cassegrain focal length of 40 m, corresponding solar image with diameter 200 mm and 373 mm respectively. 塔高约21m,定天镜口径460mm,成象镜口径330mm,主焦距21m,卡式焦距40m,相应的太阳像直径分别为200mm和373mm。
- laser coelostat 激光定向仪
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