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OrganizationUniversity of Cologne, University of Bonn
LocationGornergrat, Zermatt, Valais, Switzerland
Coordinates45°59′04″N 7°47′09″E / 45.98444°N 7.78583°E / 45.98444; 7.78583Coordinates: 45°59′04″N 7°47′09″E / 45.98444°N 7.78583°E / 45.98444; 7.78583
Altitude3,135 m (10,285 ft)
KOSMA3-m radio telescope
KOSMA is located in Switzerland
Location of KOSMA
Commons page Related media on Wikimedia Commons

The Kölner Observatorium für SubMillimeter Astronomie (KOSMA) was a 3-m radio telescope for submillimeter astronomy located at 3,135 m on Gornergrat near Zermatt (Switzerland). It was operated by the "I. Physikalisches Institut"[1] (Cologne, Germany) and the "Radioastronomisches Institut der Universität Bonn" (RAIUB),[2] University of Bonn. It was equipped with heterodyne receivers covering frequencies between 210 and 880 GHz, corresponding to wavelengths between 0.35 and 1.4 mm, for observations of lines from the interstellar medium.

Because of the good climatic conditions at the altitude of 3135 m (10285 ft), astronomical observatories have been located in both towers of the Kulmhotel at Gornergrat since 1967. In 1985, the KOSMA telescope was installed in the southern tower by the Universität zu Köln and, in the course of 1995, replaced by a new dish and mount. In the northern tower, a 1.5 m infrared telescope was operated until 2005 by an Italian association of universities (TIRGO).

The telescope has been moved to a site in Yangbajain in Damxung County in Tibet at an altitude of 4300m and renamed CCOSMA[3].

See also[edit]


  1. ^ "I. Physikalisches Institut". uni-koeln.de.
  2. ^ http://www.astro.uni-bonn.de/~webrai/
  3. ^ http://english.nao.cas.cn/Research2015/rp2015/201701/t20170120_173615.html

External links[edit]