Far-Infrared Line Mapper (FILM) on the Infrared Telescope in Space

Details Far-Infrared Line Mapper (FILM) on the Infrared Telescope in Space Far-Infrared Line Mapper (FILM) on the Infrared Telescope in Space

Jun 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...428..377s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 428, no. 1, p. 377-383

Astronomy and Astrophysics

Astronomy

32

Calibrating, Far Infrared Radiation, Gratings (Spectra), Infrared Astronomy, Mapping, Spaceborne Telescopes, Spectrometers, Cryogenic Cooling, Detectors, Electronic Modules, Gallium Alloys, Germanium Alloys, Japanese Spacecraft, Line Spectra

Scientific paper

We have developed a Far-Infrared Line Mapper (FILM) as one of the four focal plane instruments on the Infrared Telescope in Space (IRTS). The FILM is a grating spectrometer designed to simultaneously measure (C II) 158 microns and (O I) 63 microns line intensities and continuum emission near the (C II) line with spatial resolution of 8 arcmin. Very high sensitivity and accuracy are achieved by using stressed and unstressed Ge: Ga detectors at 1.8 K with a helium cooled telescope and by using a spectral scanner to distinguish the line emission from the continuum emission. Line intensities of the (C II) and the (O I) will be mapped over 10% of the sky with much higher sensitivity than the previous survey measurements.

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