Technology and Capibilities of the Herschel Space Observatory's Heterodyne Instrument for Far Infrared (HIFI)

Details Technology and Capibilities of the Herschel Space Observatory's Heterodyne Instrument for Far Infrared (HIFI) Technology and Capibilities of the Herschel Space Observatory's Heterodyne Instrument for Far Infrared (HIFI)

May 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aas...204.8106p&link_type=abstract

American Astronomical Society Meeting 204, #81.06; Bulletin of the American Astronomical Society, Vol. 36, p.814

Astronomy and Astrophysics

Astronomy

Scientific paper

The Heterodyne Instrument for Far Infrared (HIFI) on ESA's Herschel Space Observatory is comprised of five SIS receiver channels covering 480-1250 GHz and two HEB receiver channels covering 1410-1910 GHz. Two fixed tuned local oscillator sub-bands are derived from a common synthesizer to provide the front-end frequency coverage for each channel. The local oscillator unit will be passively cooled while the focal plane unit is cooled by superfluid helium and cold helium vapors. The HIFI receivers employ W-band GaAs amplifiers, InP HEMT low noise IF amplifiers, fixed tuned broadband planar diode multipliers, and novel material systems in the SIS and HEB mixers. The HIFI instrument is built by an international consortium lead by Space Research Organization the Netherlands with a substantial contribution by the National Aeronautics and Space Administration's Jet Propulsion Laboratory. HIFI combines the new receiver technology and a variety of potential observing modes into an extremely power system with unprecedented sensitivity and capability. HIFI will be available for all to use through the Herschel open time proposal process. An overview of the HIFI technology, receiver configuration, functionality and observing capabilities will be presented.

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