1. an instrument used to measure the angular separation of two stars that are too far apart to be included in the field of view of an ordinary telescope
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How To Use heliometer In A Sentence

  • After the expedition the heliometer was donated to the Observatory who built a tower for it.
  • And so, the phenomenon in 1882 was observed by cameras held by the French and the Americans, and timings were measured with the help of heliometers in most European organizations.
  • The heliometer is shown on display at the Science Museum in London.
  • He also determined the distances, using the heliometer, of twenty of the brighter and nearer Southern stars.
  • A heliometer is a refractor, with the objective cut in two, which was used to measure small angular distances.
  • Here he constructed the famous "Dorpat refractor" for Struve, which is still at work; and designed the "K√∂nigsberg heliometer" for Bessel. Pioneers of Science
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