Physics – Optics
Scientific paper
Oct 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...167..207w&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 167, no. 1, Oct. 1986, p. 207-213. Research supported by the Ministerium für W
Physics
Optics
35
Cassegrain Optics, Gallium Arsenides, Millimeter Waves, Radio Telescopes, Schottky Diodes, Submillimeter Waves, Acousto-Optics, Bandwidth, Data Acquisition, Design Analysis, Interstellar Gas, Numerical Control
Scientific paper
The Cologne 3-m millimeter and submillimeter wave radio telescope has been in operation since early 1984, after a two year construction period. The telescope has recently been moved from the roof of the Department of Physics at the University of Cologne to the Gornergrat Observatory (alt. 3150 m) close to Zermatt in the Swiss Alps, in order to exploit its submillimeter wave capabilities. The surface accuracy of the telescope is 30 microns (rms), and current receivers comprise a cooled GaAs Schottky-barrier mixer for the 70-116 GHz band, and an SIS mixer covering 140-150 GHz. Back-ends include a filter bank, three acoustooptical spectrometers with different bandwidths and channel spacings, and a 500 MHz bandwidth continuum system. This paper describes the present technical status, the performance tests and some selected molecular observations made from Cologne.
Bester Manfred
Ewald Reinhold
Hilberath W.
Jacobs Karl
Winnewisser Gisbert
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