Narrow-field radiometry in a quasi-isotropic atmosphere

Alan Holmes, James M. Palmer, Martin G. Tomasko

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


If a radiometer having a narrow field of view is used to measure the radiance of a source such as a quasi-isotropic atmosphere, a knowledge of the out-of-field responsivity is critical. For example, if a radiometer with a field of view of 5° (full-angle) has a relative responsivity of 10-4 for the out-of-field radiation, the contribution of the out- of-field radiation (assuming an isotropic source subtending 2π steradians) is 10 1/2% of the total signal. Either the stray light suppression of the radiometer must be extremely high or methods of determining the out-of-field response must be developed. A description of one method of determining the effect of out-of-field response and its application to a planetary atmospheric radiometer is presented.

Original languageEnglish (US)
Pages (from-to)27-32
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Nov 15 1979

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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