Dark Sky Collaborators: Arizona (AZ) Observatories, Communities, and Businesses

Elizabeth Alvarez Del Castillo, Christopher Corbally, Emilio E. Falco, Richard F. Green, Jeffrey C. Hall, G. Grant Williams

Research output: Contribution to journalArticlepeer-review


With outdoor lighting ordinances in Arizona first in place around observatories in 1958 and 1972, then throughout the state since 1986, Arizonans have extensive experience working with communities and businesses to preserve our dark skies. Though communities are committed to the astronomy sector in our state, astronomers must collaborate with other stakeholders to implement solutions. Ongoing education and public outreach is necessary to enable ordinance updates as technology changes. Despite significant population increases, sky brightness measurements over the last 20 years show that ordinance updates are worth our efforts as we seek to maintain high quality skies around our observatories. Collaborations are being forged and actions taken to promote astronomy for the longer term in Arizona.

Original languageEnglish (US)
Pages (from-to)747
Number of pages1
JournalProceedings of the International Astronomical Union
Issue numberH16
StatePublished - 2012
Externally publishedYes


  • Education
  • Light Pollution
  • Lighting Ordinances
  • Public Outreach
  • Site Protection

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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