Astronomy and Astrophysics – Astronomy
Scientific paper
May 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986s%26w....25..260l&link_type=abstract
Sterne und Weltraum (ISSN 0039-1263), vol. 25, May 1986, p. 260-263. In German.
Astronomy and Astrophysics
Astronomy
Infrared Astronomy, Infrared Astronomy Satellite, Spaceborne Telescopes, Andromeda Galaxy, Cameras, Cosmic Dust, Infrared Photometry, Infrared Spectrometers
Scientific paper
On January 26, 1983, a highly sensitive infrared telescope was launched into space. Because of the necessity to maintain the instrument at very low temperatures, the research satellite with the instrument contained also a tank with 650 liters superfluid helium. The first studies related to the development of an infrared research satellite (IRAS) were conducted in 1970. Attention is given to the camera with 62 infrared receivers for four wavelength bands, the prism spectrometer, the one-channel photometer, difficulties related to impacts involving protons and electrons, the characteristics of the image of the sky obtained with the aid of IRAS, the orbit of IRAS, and the Andromeda Galaxy M31 as a false color image. The cold dust (30 K) in the nucleus of M31 is heated by cool stars.
Klaas Ulrich
Lemke Deitrich
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