Measurement of stray radiance in the High Altitude Observatory's SKYLAB coronagraph

Details Measurement of stray radiance in the High Altitude Observatory's SKYLAB coronagraph Measurement of stray radiance in the High Altitude Observatory's SKYLAB coronagraph

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apopt..16..931c&link_type=abstract

Applied Optics, vol. 16, Apr. 1977, p. 931-937.

Physics

Optics

7

Coronagraphs, Light Scattering, Lunar Surface, Radiance, Radiation Measurement, Skylab Program, Apollo Telescope Mount, Instrument Errors, Lunar Maria, Lunar Occultation, Lunar Photography, Solar Eclipses

Scientific paper

The paper outlines two techniques used for determining the instrumental stray radiance from orbital results obtained with the Skylab white light coronagraph. The first technique employs images of the lunar disk made near the time of solar eclipse to compare the apparent contrasts of maria and highlands recorded by the coronograph with those of previous studies and then determine the magnitude of the stray radiance and its variation along a radius. The second method determines the azimuthal variation of the stray radiance by measuring the change in the net radiance of a point in the coronal images as the image is rotated.

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