Computer Science – Performance
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apopt..19.1593s&link_type=abstract
Applied Optics, vol. 19, May 15, 1980, p. 1593-1596.
Computer Science
Performance
Image Contrast, Infrared Telescopes, Performance Prediction, Spaceborne Telescopes, Wave Diffraction, Background Radiation, Incoherence, Irradiance, Light Scattering, Light Sources
Scientific paper
A simple approximate formula is derived for the background intensity beyond the edge of the image of uniform incoherent circular light source relative to the irradiance near the center of the image. The analysis applies to diffraction-limited telescopes with or without central beam obscuration due to a secondary mirror. Scattering off optical surfaces is neglected. The analysis is expected to be most applicable to spaceborne IR telescopes, for which diffraction can be the major source of off-axis response.
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