BLAST autonomous daytime star cameras

@inproceedings{Rex2006BLASTAD,
  title={BLAST autonomous daytime star cameras},
  author={M. Rex and E. Chapin and M. Devlin and J. Gundersen and J. Klein and E. Pascale and D. Wiebe},
  booktitle={SPIE Astronomical Telescopes + Instrumentation},
  year={2006}
}
We have developed two redundant daytime star cameras to provide the fine pointing solution for the balloon-borne submillimeter telescope, BLAST. The cameras are capable of providing a reconstructed pointing solution with an absolute accuracy < 5". They are sensitive to stars down to magnitudes ~ 9 in daytime float conditions. Each camera combines a 1 megapixel CCD with a 200mm f/2 lens to image a 2° × 2.5° field of the sky. The instruments are autonomous. An internal computer controls the… Expand
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