Definition of siderostat in English:

siderostat

Line breaks: sid¦ero|stat
Pronunciation: /ˈsɪd(ə)rə(ʊ)stat
 
, ˈsʌɪ-/

noun

Astronomy
  • An instrument used for keeping the image of a celestial object in a fixed position.
    More example sentences
    • The six mirrors, or siderostats, are mounted at regular intervals along a Y-shaped set of tubes.
    • The six imaging siderostats can be mounted on any one of the concrete piers apparent along the arms of the Y, providing the maximum baseline of 437 meters.
    • One array consists of four stationary astrometric siderostats with baselines between 18 m and 35 m, while the other contains six movable imaging siderostats with baselines up to 435 m.

More definitions of siderostat

Definition of siderostat in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody