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Author Walker, M.F. url  openurl
  Title (up) 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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  Notes Approved no  
  Call Number LoNNe @ kagoburian @ Serial 561  
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Author Sánchez, S. F.; Aceituno, J.; Thiele, U.; Pérez-Ramírez, D.; Alves, J. url  doi
openurl 
  Title (up) The Night Sky at the Calar Alto Observatory Type Journal Article
  Year 2007 Publication Publications of the Astronomical Society of the Pacific Abbreviated Journal Publ Astron Soc Pac  
  Volume 119 Issue 860 Pages 1186-1200  
  Keywords Skyglow, Darkness  
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  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0004-6280 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number LoNNe @ christopher.kyba @ Serial 1131  
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Author Massey, P.; Foltz, C. B. url  doi
openurl 
  Title (up) The Spectrum of the Night Sky over Mount Hopkins and Kitt Peak: Changes after a Decade1 Type Journal Article
  Year 2000 Publication Publications of the Astronomical Society of the Pacific Abbreviated Journal Publ Astron Soc Pac  
  Volume 112 Issue 770 Pages 566-573  
  Keywords Kitt Peak; observatories; Arizona; skyglow; light pollution; measurements  
  Abstract Recent (1998–1999) absolute spectrophotometry of the night sky over two southern Arizona astronomical sites, Kitt Peak and Mount Hopkins, is compared to similar data obtained in 1988 at each site. The current zenith sky brightness in the range ∼3700–6700 Ã… is essentially identical at the two sites and is as dark now as Palomar Observatory was in the early 1970s, when it was generally considered a premier dark observing site. Converted to broadband measurements, our spectrophotometry is equivalent to , mag arcsec−2, for the zenith night sky. The contribution of high‐pressure sodium street lights to broadband V is about 0.2 mag arcsec−2, comparable to the strong airglow O i λ5577 line. During the period from 1988 to 1998–1999, the zenith sky brightness increased only modestly, with the largest changes being seen for Kitt Peak, where the zenith sky has brightened by ≈0.1–0.2 mag arcsec−2 in the blue‐optical region. For Kitt Peak we also have both 1988 and 1999 observations at modestly large zenith distances ( ). In the directions away from Tucson, the sky has brightened by ≈0.35 mag arcsec−2 over the intervening decade. Toward Tucson the change has been larger, approximately 0.5 mag arcsec−2. In most directions the increase in the sky brightness has lagged behind the fractional increase in population growth, which we attribute to good outdoor lighting ordinances, a fact which is further reflected in the decrease in Hg emission. However, our results emphasize the need for diligent attention as developments creep closer to our observing sites.  
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  Series Volume Series Issue Edition  
  ISSN 0004-6280 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number IDA @ john @ Serial 264  
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