The Submillimeter Wave Astronomy Satellite.

Details The Submillimeter Wave Astronomy Satellite. The Submillimeter Wave Astronomy Satellite.

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990fgbs.rept..251m&link_type=abstract

29. Liège International Astrophysical Colloquium: From ground-based to space-borne sub-mm astronomy, p. 251 - 256

Astronomy and Astrophysics

Astronomy

1

Sub-Mm Astronomy: Space Missions, Sub-Mm Radiation: Space Telescopes

Scientific paper

The Submillimeter Wave Astronomy Satellite (SWAS) was selected for flight by NASA in 1989 as part of its Small Explorer Program. SWAS will consist of a 55×71-cm near-optical quality off-axis primary mirror, two heterodyne radiometers with Schottky barrier diode mixers, and a single broadband (1.4 GHz) acousto-optical spectrometer (AOS). SWAS's primary objective will be to conduct a high spectral resolution survey of galactic molecular clouds in low-lying transitions of water, molecular oxygen, atomic carbon, and isotopic carbon monoxide - these species being critical of the chemistry and cooling of dense (≥103cm-3) molecular clouds. The AOS bandwidth is sufficient to permit simultaneous observation of all four lines, while the spectral resolution of the AOS, 1 MHz, will give SWAS a velocity resolution of approximately 0.6 km s-1. Scheduled for launch aboard an expendable Scout launch vehicle in 1994, SWAS is baselined for a 2-year lifetime.

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