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Paper: In-Orbit Calibration of the Distortion of the SOHO/LASCO-C2 Coronagraph
Volume: 125, Astronomical Data Analysis Software and Systems VI
Page: 435
Authors: Llebaria, A.; Aubert, S.; Lamy, P.; Plunkett, S.
Abstract: This paper describes distortion calibration procedures for the SOHO/LASCO-C2 Coronagraph, based on in-orbit data and extensive image processing methods. It addresses specific problems of externally occulted coronagraphs (obstructed center of field-of-view, strong vignetting, and presence of stray light) and limitations inherent to space-based instrumentation (cosmic rays and limited number of reference points).
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