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Private life of an integrating sphere: the radiant homogeneity of the Descent Imager -Spectral Radiometer calibration sphere

Rizk, Bashar

Perturbations to an integrating sphere's radiant uniformity by a protruding optical system are mapped. A sphere provides the Descent Imager-Spectral Radiometer sensor head (DISR SH), a practical platform for many of its subsystems' calibrations, but the resulting nonuniformity threatens the goal of accurate radiometry. An apparatus with a nearly i…