TERMIUM Plus®

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LUNETTE PASSAGE [1 record]

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Alphabetical list of terms

Record 1 1986-03-24

English

Subject field(s)
  • Facilities and Instruments (Astronomy)
DEF

A telescopic instrument adapted to the observation of the passage, or transit, of an astronomical object across the meridian of an observer; consists of a telescope mounted on a single fixed horizontal axis of rotation which has a central hollow cube (sometimes a sphere) and two conical semiaxes ending in cylindrical pivots; the objective and eye-piece halves of the instrument are also fastened to the cube of the instrument, perpendicular to the horizontal axis. Also known as transit instrument.

French

Domaine(s)
  • Installations et instruments (Astronomie)

Spanish

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