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 …
    • Residential Lighting Tips
      • Dark Sky Residential Lighting Products
    • Commercial and Roadway Lighting Tips
      • Dark Sky Commercial Lighting Products
    • Outdoor Lighting Codes
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      • Thorpe Park Editorial
  • International Dark Sky City
    • International Dark Sky City
    • Flagstaff’s Battle for Dark Skies
    • 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
    • Light at Night and Human Health
    • Light at Night and the Environment
    • The Science of Lighting Codes and Regulations
    • Measuring and Modeling Sky Glow Light Pollution
  • Resources
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THE BEST IN DARK SKIES
FROM THE
FIRST INTERNATIONAL
DARK-SKY CITY

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Recently Updated Pages

  • The Flagstaff Star Party on 11th April'21
  • Dark Sky Moments on 13th March'21
  • Dark Matters! on 14th December'20

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