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HIFI Instrument

HIFI Instrument


Date: 19 September 2007
Satellite: Herschel
Depicts: Focal plane unit of the HIFI instrument
Copyright: ESA

The Heterodyne Instrument for the Far Infrared (HIFI) is a very high-resolution heterodyne spectrometer. It works by mixing the incoming signal with a stable monochromatic signal, generated by a local oscillator, and extracting the frequency difference for further processing in a spectrometer. HIFI will have seven separate local oscillators covering two bands from 480-1250 GHz and 1410– 1910 GHz. The instrument was developed by a consortium led by SRON Netherlands Institute for Space Research.
Last Update: 1 September 2019
28-May-2020 12:02 UT

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