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Author (up) Walker, M.F. url  openurl
  Title The effects of urban lighting on the brightness of the night sky Type Journal Article
  Year 1977 Publication Publications of the Astronomical Society of the Pacific Abbreviated Journal  
  Volume 89 Issue 529 Pages  
  Keywords Skyglow  
  Abstract A new study of urban lighting and its effect on the brightness of the night sky indicates: (1) The total light output of cities of similar economic development is at least approximately proportional to their populations. (2) The artificial illumination of the night sky at 45 ° altitude in the direction of the illuminating city varies as I∝ D¯²⁵ .(3) The distance at which cities of a given population produce a brightening of the sky of 0.2 magnitude at 45° altitude toward the city varies as P∝ D2.5 .  
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  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 561  
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