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Author (up) Benn, C.R.; Ellison, S.L. url  openurl
  Title La Palma night-sky brightness Type Report
  Year 1998 Publication La Palma Technical Reports Abbreviated Journal  
  Volume Issue 115 Pages  
  Keywords Skyglow; solar cycle; airglow; zodiacal light; light pollution; observatories; *Light  
  Abstract The brightness of the moonless night sky above La Palma was measured on 427 CCD images taken with the Isaac Newton and Jacobus Kapteyn Telescopes on 63 nights during 1987 – 1996. The median sky brightness at high elevation, high galactic latitude and high ecliptic latitude, at sunspot minimum, is B = 22.7, V = 21.9, R = 21.0, similar to that at other dark sites. The main contributions to sky brightness are airglow and zodiacal light. The sky is brighter at low ecliptic latitude (by 0.4 mag); at solar maximum (by 0.4 mag); and at high airmass (0.25 mag brighter at airmass 1.5). Light pollution (line + continuum) contributes < 0.03 mag in U, approximately 0.02 mag in B, approximately 0.10 mag in V, approximately and 0.10 mag in R at the zenith.  
  Address Isaac Newton Group, Apartado 321, 38780 Santa Cruz de La Palma, Spain  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language English Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Lots of useful theory on the various contributions to natural sky background level and expected surface brightnesses Approved no  
  Call Number IDA @ john @ Serial 1101  
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