Abstract
Successful photography of stars by the Mariner 9 spacecraft has confirmed both
mathematical prediction of point source response by vidicons and preflight
calibration results. Camera-B limiting magnitude and integrated image data are
presented to provide information relevant to absolute photometric reduction.
These data appear consistent to better than 15% and suggest a good
calibration source. Decalibration of Mars picture information, however, requires
precise knowledge of Mars spectral radiance and camera point spread function.
The effect of image motion on star detection thresholds is also discussed.
© 1973 Optical Society of America
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