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Author (up) Craine, E.R.; Craine, B.L.; Craine, P.R.; Craine, E.M. url  openurl
  Title The Light at Night Mapping Project: LAN MAP 1, the Tucson Basin Type Journal Article
  Year 2012 Publication Society for Astronomical Sciences 2012 (proceedings) Abbreviated Journal  
  Volume 31 Issue Pages 139-145  
  Keywords Skyglow  
  Abstract Tucson, Arizona, once billed as the Astronomical Capital of the World, has long been home to at least ten major astronomical institutions and facilities. The region also hosts numerous productive amateur observatories and professional-amateur astronomical collaborations. In spite of the implementation of progressive night time lighting codes, the continued growth of the region has arguably deprived Tucson of its title, and threatens the future of some if not all of these facilities. It has become apparent that there are several difficulties in regulating this lighting environment. It is not easy to model the actual effects of new or changed lighting fixtures, there are compelling economic conflicts that must be considered, and adherence to various guidelines is often ignored. Perhaps the most fundamental problem is that there have historically been no comprehensive measures of either light at night or sky brightness over the extended growth areas. What measurements do exist are inhomogeneous and poorly accessible spot measurements at some observatory sites. These have little to tell us about the actual light distributions in the overall region, and rarely are informative of the specific light sources that offend the observatory sites. Tucson remains, for the time, an important astronomical resource. Because of its astronomical and lighting code circumstances, it is an interesting and valuable laboratory for studying these issues. In this paper we introduce an innovative new 5-year project to comprehensively map both sky brightness and associated artificial lighting over extended areas of development in the vicinity of important astronomical institutions. We discuss the various vectors employed in data collection; we outline the protocols used for each methodology, give examples of the data collected, and discuss data analysis and conclusions. This program has been underway since January 2012, and has already produced results of interest to professional and amateur astronomers alike.  
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  Call Number LoNNe @ christopher.kyba @ Serial 543  
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