The DUO: Far infrared heterodyne concept for space interferometry

Details The DUO: Far infrared heterodyne concept for space interferometry The DUO: Far infrared heterodyne concept for space interferometry

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985esasp.226..171g&link_type=abstract

In ESA Colloq. on Kilometric Opt. Arrays in Space p 171-176 (SEE N86-11096 01-89)

Astronomy and Astrophysics

Astronomy

Far Infrared Radiation, Infrared Astronomy, Michelson Interferometers, Optical Heterodyning, Spaceborne Astronomy, Field Of View, Spacecraft Configurations, Spectral Resolution, Synthetic Apertures

Scientific paper

The direct Michelson technique and heterodyning are compared for spaceborne far infrared interferometer design. Constraints for space interferometry are recalled. The high spectral selectivity; diffraction-limited field of view; handling of electrical signals for correlation; low sensitivity to background radiation; and heavy and sophisticated equipment involved in heterodyning are discussed. The greatest advantage of heterodyning is the need for two satellites instead of three.

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