A narrow beam spectral radiometer to measure atmospheric emission from 4 to 14.5 microns

Details A narrow beam spectral radiometer to measure atmospheric emission from 4 to 14.5 microns A narrow beam spectral radiometer to measure atmospheric emission from 4 to 14.5 microns

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977japme..16.1077w&link_type=abstract

Journal of Applied Meteorology, vol. 16, Oct. 1977, p. 1077-1081.

Physics

Atmospheric Radiation, Infrared Detectors, Portable Equipment, Radiometers, Calibrating, Cryogenic Equipment, Design Analysis, Resolution, Telescopes

Scientific paper

The paper describes the design and operation of a portable spectral radiometer with a helium-cooled photoconductor detector for measuring infrared emission from the atmosphere. The radiometer consists of a small telescope (10.8 cm diameter), a reference radiation source and chopper assembly and a cryogenic dewar containing the detector and filter wheel. The instrument is of medium resolution (delta lambda/lambda of about 2%) and its advantages are its narrow beam (about .000001 sr) and accuracy in absolute radiance measurement (1% of a blackbody at ambient temperature).

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