The MPE/UCB far-infrared imaging Fabry-Perot interferometer (FIFI)

Details The MPE/UCB far-infrared imaging Fabry-Perot interferometer (FIFI) The MPE/UCB far-infrared imaging Fabry-Perot interferometer (FIFI)

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991stin...9212242p&link_type=abstract

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Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Fabry-Perot Interferometers, Far Infrared Radiation, Imaging Spectrometers, Infrared Astronomy, Astronomical Photometry, Bandwidth, Calibrating, Cryogenic Equipment, Frequency Modulation, Photoconductors, Spectral Resolution

Scientific paper

FIFI is an imaging spectrometer with two or three Fabry Perot Interferometers (FPI) in series for airborne astronomical observations in the far infrared range (wavelength = 40 to 200 microns). It employs 5 by 5 arrays of photoconducting detectors and offers spectral resolutions as small as 2 km/s. Resolution and bandwidth can be set over a wide range to match a variety of astronomical sources. Cryogenic optics minimizes thermal background radiation and provides for inflight step tunable spatial resolution. The frequency chopping mode of the high resolution Fabry Perot allows for line detection in extended objects. Absolute internal flux calibration ensures adequate flat fielding of the array elements.

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