Carlsberg Meridian Telescope

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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]

## References

1. ↑ "The Carlsberg Meridian Telescope". https://www.ast.cam.ac.uk/ioa/research/cmt/camc.html.
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. doi:10.1086/656329. ISSN 0004-6280. Bibcode: 2010PASP..122.1109G.
3. ↑ 3.0 3.1 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

* Tokyo Photoelectric Meridian Circle (Another 20th century electronic meridian telescope)

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