transit instrument

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transit instrument

n
(Astronomy) an astronomical instrument, mounted on an E-W axis, in which the reticle of a telescope is always in the plane of the meridian. It is used to time the transit of a star, etc, across the meridian
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.transit instrument - a telescope mounted on an axis running east and west and used to time the transit of a celestial body across the meridiantransit instrument - a telescope mounted on an axis running east and west and used to time the transit of a celestial body across the meridian
telescope, scope - a magnifier of images of distant objects
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive
For its regulation Osler provided a transit instrument and an astronomical clock for its rooftop observatory.
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Maclear's southern terminal for the repeat of La Caille's work was the centre of the Transit instrument at the Royal Observatory and his northern terminal was a threshing floor that still exists and is marked by a plaque on a farm in the Piketberg.
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A transit instrument is used in which scientific discipline?
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