The 3-m Cologne radiotelescope

Details The 3-m Cologne radiotelescope The 3-m Cologne radiotelescope

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984s%26w....23..132w&link_type=abstract

Sterne und Weltraum (ISSN 0039-1263), vol. 23, March 1984, p. 132-137. In German.

Computer Science

2

Radio Telescopes, Design, Emission Spectra, Equipment Specifications, Interstellar Matter, Millimeter Waves, Molecular Clouds, Molecular Spectroscopy

Scientific paper

The design and operation of the Cologne radiotelescope and its application to the spectroscopic study of interstellar molecules are surveyed. A table of technical specifications, a block diagram of the data-processing system, and sample spectra are provided. The 3-m-diameter main reflector has a surface precision of 30 microns rms, permitting observations at wavelengths as low as 0.3 mm, although atmospheric conditions at Cologne limit this to about 2.6 mm. The computer control system, 80-90-GHz heterodyne receiver, and spectrometer/continuum back ends are examined in detail. Plans call for installation of the telescope at the Gornergrat observatory (3126 m elevation) in Switzerland in fall, 1984, to expand the wavelength range. The role of the Cologne telescope as a complement to and training installation for the planned space instruments GIRL, ISO, and FIRST is indicated.

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