Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...133..293m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 133, no. 2, April 1984, p. 293-298.
Astronomy and Astrophysics
Astronomy
3
Continuous Radiation, Infrared Astronomy, Infrared Telescopes, Millimeter Waves, Molecular Clouds, Calibrating, Photometers, Semiconductor Devices, Switzerland
Scientific paper
A new instrument for the detection of millimeter radiation, mounted at the Cassegrain focus of the 1.5 m, F/20 Italian Infrared Telescope, TIRGO, is described. The detector is a composite GaGe bolometer with F/4 field optics, with an uncooled focal adaptor. At the Gornergrat Observatory in April 1982, Jupiter, Mars, and Saturn were observed and used as primary standards. In spite of the high atmospheric water vapor content (about 6 mm), the molecular cloud W49 was detected at a level of 1200 + or - 300 Jy with a beam size of 3 arcmin HPBW at a wavelength of 1 mm. The integrated energy distribution of W 49, obtained from the observation and from previous results at shorter wavelengths, was compared with a hot-centered cloud model by Rowan-Robinson (1980).
Delli Santi F. S.
Delpino F.
Ferrari-Toniolo Marco
Landini Massimo
Leonetti O.
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