Flagstaff Dark Skies Coalition

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PCA LED

April 23, 2018 525 × 324 Dark Sky Commercial Lighting Products

Spectral Power Graph – A representative PCA LED

This page was last updated 30th April, 2018
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To celebrate, promote, and protect the glorious dark skies of Flagstaff and northern Arizona.

  • Dark Matters!
    • Dark Matters!
      • Dark Matters! Newsletter
    • Light Pollution – The Problem
    • Dark Skies in and Around Flagstaff
      • The Sky Over Flagstaff Now – constellations labeled
      • The Sky Over Flagstaff Now – stars only
  • Dark Sky Solutions
    • What Can You Do To Protect The Night Sky?
    • How To Talk To Your Neighbor …
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      • Dark Sky Residential Lighting Products
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      • Thorpe Park Editorial
  • International Dark Sky City
    • International Dark Sky City
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    • Dark Skies in and Around Flagstaff
  • Critical Dark Sky Issues
    • Light at Night and Safety
    • LED Lighting and Dark Skies
    • Lamp Spectrum and Light Pollution
    • Low Pressure Sodium Lighting
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    • The Science of Lighting Codes and Regulations
    • Measuring and Modeling Sky Glow Light Pollution
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FROM THE
FIRST INTERNATIONAL
DARK-SKY CITY

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Recently Updated Pages

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