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Paper: Residual Bias Removal in HST NICMOS Images
Volume: 216, Astronomical Data Analysis Software and Systems IX
Page: 531
Authors: Bushouse, H.; Dickinson, M.; van der Marel, R. P.
Abstract: Software tools have been developed to allow observers to examine and correct NICMOS images for the presence of residual bias signal. The NICMOS detector bias can drift between and during exposures, due to small changes in temperature. Subtraction of a standard calibration frame can therefore leave residual bias signal, which then results in the presence of a flat field imprint in processed images. Correction routines have been developed that determine the residual bias signal by iteratively solving for the signal level that minimizes the flat field imprint.
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