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Paper: Cosmic Ray Rejection and Data Compression for NGST
Volume: 216, Astronomical Data Analysis Software and Systems IX
Page: 539
Authors: Fixsen, D. J.; Hanisch, R. J.; Mather, J. C.; Nieto-Santisteban, M. A.; Offenberg, J. D.; Sengupta, R.; Stockman, H. S.
Abstract: We present an algorithm to sift through multiple reads of an image and find and reject cosmic ray events and other glitches. The resulting image is then compressed first with a lossy compression algorithm and then by a lossless compression algorithm. The final compression ratio is of order 4n (n is number of reads) for simulated data.This order of data compression is required to fit the NGST data into the anticipated downlink bandwidth. The computational requirements are modest, showing the key limitation may be the bus from the A->D converter to the computer rather than the computation itself.
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