Physics – Optics
Scientific paper
Nov 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974infph..14..303d&link_type=abstract
Infrared Physics, vol. 14, Nov. 1974, p. 303-321.
Physics
Optics
4
Atmospheric Optics, Automatic Test Equipment, Far Infrared Radiation, Infrared Astronomy, Spectral Emission, Atmospheric Density, Atmospheric Windows, Circuit Diagrams, Infrared Spectra, Michelson Interferometers, Optical Paths, Radiation Spectra, Radiometers, Signal To Noise Ratios, Spectral Energy Distribution
Scientific paper
Description of an instrument intended to measure the atmospheric transmission through the windows between 300 and 3000 microns. The radiometer operates automatically, scanning the sky in steps of 0.7 deg from the horizon to the zenith, with the time constant as selected by the operator. The spectral distribution of the radiation is measured using a Michelson interferometer with an optical path difference of plus or minus 10 cm. Using a 77 K reference blackbody, the atmospheric transmission can be measured with an accuracy better than 1%. Some preliminary results are described, obtained at the Alpine station of Testa Grigia (3500 m above sea level).
Dalloglio G.
Fonti Sergio
Giraldi G.
Melchiorri Bianca
Melchiorri Francesco
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