Cryogenic limb array ETALON spectrometer (CLAES) calibration

Details Cryogenic limb array ETALON spectrometer (CLAES) calibration Cryogenic limb array ETALON spectrometer (CLAES) calibration

Nov 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990spie.1340..194s&link_type=abstract

IN: Cryogenic optical systems and instruments IV; Proceedings of the Meeting, San Diego, CA, July 10-12, 1990 (A92-22851 08-31).

Physics

Atmospheric Radiation, Calibrating, Cryogenic Equipment, Infrared Spectrometers, Arrays, Atmospheric Temperature, Etalons, Infrared Telescopes, Ozonometry, Stratosphere Radiation

Scientific paper

The CLAES is calibrated with a full-aperture blackbody on the instrument-aperture door. In laboratory calibration, the blackbody is resistively heated. On orbit, the blackbody is intended to be heated by exposure to radiation from the earth while the door is open; calibration data are then taken at several temperatures after closing the door, as the blackbody cools to the temperature of the instrument's cryogenic telescope. An analysis of radiometric calibration-source accuracy is shown, indicating a nominal value of 2.7 percent at 12.63 microns. Preliminary analysis of calibration data indicates a measurement repeatability of about 1.25 percent. Details of the blackbody design, construction, and thermal instrumentation are given.

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