Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982s%26w....21...62l&link_type=abstract
Sterne und Weltraum, vol. 21, Feb. 1982, p. 62-65. In German.
Astronomy and Astrophysics
Astronomy
1
Infrared Astronomy, Infrared Telescopes, International Cooperation, Interstellar Matter, Spaceborne Experiments, Spaceborne Telescopes, Galactic Nuclei, Infrared Spectra, Liquid Helium, Space Infrared Telescope Facility, Spacelab Payloads, Stellar Evolution
Scientific paper
The infrared spectral range can provide for astronomical studies information which cannot be obtained by any other means. All cool objects are IR sources, and the spectra of interstellar molecules are in the infrared region. It is possible to examine the interior of areas in which star formation occurs, and to look into the nuclei of galaxies. Earth-based IR studies are restricted to observations corresponding to a few 'atmospheric windows'. Only by conducting IR observations with instruments placed above the atmosphere, is it possible to study the entire IR region. The quality of the observations can be greatly improved by employing instruments cooled with liquid helium. Projects which utilize these new opportunities are discussed. Attention is given to the Infra Red Astronomical Satellite, the Spacelab 2 Infrared Telescope, the German Infrared Laboratory, the Shuttle Infrared Telescope Facility, the Cosmic Background Explorer, and the Infrared Space Observatory of ESA.
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