Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993adspr..13..912p&link_type=abstract
Advances in Space Research (ISSN 0273-1177), vol. 13, no. 12, p. 912)545-(12)548
Astronomy and Astrophysics
Astronomy
1
Equipment Specifications, Far Infrared Radiation, Infrared Astronomy, Mission Planning, Radio Astronomy, Spaceborne Telescopes, Spacecraft Design, Submillimeter Waves, Ariane Launch Vehicle, Cryostats, European Space Agency, Heterodyning, Infrared Spectrometers, Interstellar Matter, Photometers, Radio Receivers
Scientific paper
The present status of the ESA cornerstone mission Far Infrared and Submillimeter Space Telescope (FIRST) is presented. A recent industrial study has generated a spacecraft concept employing a 4.5 m passively cooled telescope with focal plane instrument cooling provided by a superfluid helium cyrostat. The model payload complement includes two direct detection instruments as well as two heterodyne instruments. After a shared launch by Ariane 5 into geostationary transfer orbit (GTO), FIRST propels itself into the 24-hour highly eccentric operational orbit, where observations can be conducted up to 17 hours per day with an expected approximate mission duration of 3 years. An additional complementary study of a non-cryostat spacecraft option will also be performed.
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