Optical design of the Diffuse Infrared Background Experiment for NASA's Cosmic Background Explorer

Details Optical design of the Diffuse Infrared Background Experiment for NASA's Cosmic Background Explorer Optical design of the Diffuse Infrared Background Experiment for NASA's Cosmic Background Explorer

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982spie..331..483m&link_type=abstract

IN: Instrumentation in astronomy IV; Proceedings of the Fourth Conference, Tucson, AZ, March 8-10, 1982 (A83-31976 14-35). Belli

Astronomy and Astrophysics

Astronomy

Background Radiation, Cosmic Background Explorer Satellite, Diffuse Radiation, Infrared Radiation, Satellite Observation, Spaceborne Experiments, Design Analysis, Extraterrestrial Radiation, Galactic Radiation, Infrared Detectors, Infrared Telescopes, Nasa Programs, Polarimetry, Satellite-Borne Instruments

Scientific paper

The conceptual design for a ten-band absolute filter photometer (the Diffuse Infrared Background Experiment) to operate at 2 K and measure galactic and extragalactic infrared radiation in the 1 to 300-micron range and polarization in the 1 to 3.5-micron range is presented, as part of the NASA Cosmic Background Explorer. The telescope optical design, a Gregorian design incorporating bafffles and shades to provide high stray-light rejection, is described. Pupil nonuniformity in the detector-assembly optical design has been limited. It is determined that detector sensitiity requirements can be met, and that the problem of radiation-induced responsivity variations can be solved by minimizing detector-assembly size, providing for in situ thermal annealing, and allowing for frequent detector calibration. Limitations on mirror performance are to be met by fabricating mirrors and structure from the same aluminum 6061 ingot.

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