Data Compression for the Next Generation Space Telescope

  title={Data Compression for the Next Generation Space Telescope},
  author={Mar{\'i}a A. Nieto-Santisteban and Dale J. Fixsen and Joel D. Offenberg and Robert J. Hanisch and H. S. Stockman},
  booktitle={Data Compression Conference},
The Next Generation Space Telescope (NGST) will produce about 600 GB/day, assuming we use the NASA Yardstick 8k× 8k NIR camera (16 bits/pixel), save and transmit 64 non-destructive read-outs per image, and the camera is in continuous use (about 80 observations/day, 10 3 s each). However, with an L2 halo orbit, the NASA NGST study estimates a downlink rate of 5.35 GB/day using X-band. Clearly the volume of data to downlink must be reduced by at least a factor of 100. 

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