Carlsberg Meridian Telescope

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Carlsberg Meridian Telescope
Ing telescopes sunset la palma july 2001.jpg
Part of Roque de los Muchachos Observatory. The Carlsberg Meridian Telescope is housed in the low building on the bottom left.
Part ofRoque de los Muchachos Observatory Edit this on Wikidata
Location(s)Spain Edit this at Wikidata
Coordinates28°45′36″N 17°52′57″W / 28.75999°N 17.88243°W / 28.75999; -17.88243Coordinates: 28°45′36″N 17°52′57″W / 28.75999°N 17.88243°W / 28.75999; -17.88243 Edit this at Wikidata
First lightMay 1984 Edit this on Wikidata
Decommissioned1 September 2013 Edit this on Wikidata
Telescope stylemeridian circle
optical telescope
refracting telescope Edit this on Wikidata
Diameter17.8 cm (7.0 in) Edit this at Wikidata
Focal length266 cm (8 ft 9 in) Edit this at Wikidata Edit this at Wikidata
Carlsberg Meridian Telescope is located in Canary Islands
Carlsberg Meridian Telescope
Location of Carlsberg Meridian Telescope

The Carlsberg Meridian Telescope (formerly the Carlsberg Automatic Meridian Circle) is a decommissioned meridian circle telescope located at the Roque de los Muchachos Observatory in the Canary Islands. It was dedicated to high-precision optical astrometry and operated from May 1984 to September 2013.[1]

The CMT's 20 years of photometric data was studied to understand atmosphere extinction.[2] Up to 2003, 11 catalogs were published and it had been given various upgrades since its installation in 1984.[3]

The telescope is owned by the Danish Copenhagen University Observatory and was jointly operated under an international agreement with the Institute of Astronomy, Cambridge and the Real Instituto y Observatorio de la Armada.[3]


  1. ^ "The Carlsberg Meridian Telescope". Retrieved 2019-10-17.
  2. ^ Garcia-Gil, A.; Munoz-Tunon, C.; Varela, A. M. (September 2010). "Atmosphere Extinction at the ORM on La Palma: A 20 yr Statistical Database Gathered at the Carlsberg Meridian Telescope". Publications of the Astronomical Society of the Pacific. 122 (895): 1109–1121. arXiv:1009.4056. Bibcode:2010PASP..122.1109G. doi:10.1086/656329. ISSN 0004-6280. S2CID 119205634.
  3. ^ a b Bélizon, F. & Muiños, J. & Vallejo, M. & Evans, Dafydd & Irwin, M. & Helmer, L.. (2003). First Carlsberg Meridian Telescope (CMT) CCD Catalogue.. -1. 61-68. Link.

See also[edit]