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coelostat Line breaks: coelo|stat
Pronunciation: /ˈsiːlə(ʊ)stat/

Definition of coelostat in English:


An instrument with a rotating mirror that continuously reflects the light from the same area of sky, used for monitoring the path of a celestial object.
Example sentences
  • This error can be reduced substantially by choosing the coelostat position and time interval.
  • Back in Ottawa, a specially designed shed with a roll off section housed the coelostat for almost 70 years.
  • To create rotating images in the full 360-degree range, two sets of coelostats can be combined, each compensating for the dead zone of the other.


Late 19th century: formed irregularly from Latin caelum 'sky' + -stat.

Definition of coelostat in:
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