Human contrast threshold and astronomical visibility

  title={Human contrast threshold and astronomical visibility},
  author={Andrew Crumey},
  journal={Monthly Notices of the Royal Astronomical Society},
  • A. Crumey
  • Published 16 May 2014
  • Physics
  • Monthly Notices of the Royal Astronomical Society
The standard visibility model in light-pollution studies is the formula of Hecht, as used e.g. by Schaefer. However, it is applicable only to point sources and is shown to be of limited accuracy. A new visibility model is presented for uniform achromatic targets of any size against background luminances ranging from zero to full daylight, produced by a systematic procedure applicable to any appropriate data set (e.g. Blackwell's), and based on a simple but previously unrecognized empirical… 

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