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Paper: Cosmic Ray Rejection with NGST
Volume: 172, Astronomical Data Analysis Software and Systems VIII
Page: 141
Authors: Offenberg, Joel D.; Sengupta, Ratnabali; Fixsen, Dale J.; Stockman, Peter; Nieto-Santisteban, Maria; Stallcup, Scott; Hanisch, Robert; Mather, John C.
Abstract: The Next Generation Space Telescope (NGST) will perform wide-field imaging in the high-radiation environment of deep space. Outside any protective magnetic fields, cosmic rays will produce many charged-particle events on the imaging detector, affecting as much as 10% of the field-of-view during a baseline 1000-second obervation. We present an algorithm that identifies cosmic ray events in a series of non-destructive readouts during an observation. Test results, in which over 99% of of the cosmic rays are identified and removed without significant degradation of the accumulated image data, are also presented.
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