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Paper: Data Compression for NGST
Volume: 172, Astronomical Data Analysis Software and Systems VIII
Page: 137
Authors: Nieto-Santisteban, MarĂ­a A.; Fixsen, Dale J.; Offenberg, Joel D.; Hanisch, Robert J.; Stockman, H. S. (Peter)
Abstract: The immense amount of data that the Next Generation Space Telescope (NGST) will produce and its distant orbit from Earth make it mandatory to do some amount of on-board image processing and data compression. This paper gives a summary of the performance of several lossless compression methods. We also show results of prescaling the image prior to compression using a square-root function. This imposes a slightly lossy compression, but the scaling can be adjusted so as to retain the desired number of noise bits.
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