This page is a compendium of dark-sky resources from around the web intended as a one-stop shop for various how-tos, models, guidance, etc. We link back to the original source wherever possible.
Education and Advocacy Organizations
International Dark-Sky Association
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Illuminating Engineering Society
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Colorado Plateau Dark Sky Cooperative
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Mountains of Stars
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Dark Sky Society
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GLOBE At Night
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The Consortium for Dark Sky Studies at the University of Utah
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Saving Our Stars
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British Astronomical Association Commission for Dark Skies
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Outdoor Lighting Know-How
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Bob Crelin's good/bad lighting diagram
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Utah Community Development Office Dark Sky Assessment Guide
IDA Home Lighting Assessment flow chart
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Mont Mégantic International Dark Sky Reserve Lighting Guide / Guide de L’éclairage
(French / Français) |
Lamp spectral power distribution database: A source for spectral power distribution (SPD) files for lighting calculations
Lighting calculators & calculations: Calculators for converting between various lighting metrics
Lamp spectrum and light pollution (Flagstaff Dark Skies Coalition): An informative discussion of how different light sources influence skyglow
IDA Fixture Seal of Approval Program: "Provides objective, third-party certification for luminaires that minimize glare, reduce light trespass, and don’t pollute the night sky". Includes a searchable database of lighting products.
Lighting calculators & calculations: Calculators for converting between various lighting metrics
Lamp spectrum and light pollution (Flagstaff Dark Skies Coalition): An informative discussion of how different light sources influence skyglow
IDA Fixture Seal of Approval Program: "Provides objective, third-party certification for luminaires that minimize glare, reduce light trespass, and don’t pollute the night sky". Includes a searchable database of lighting products.
Lighting Policy
IDA-IES Model Lighting Ordinance
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Online Maps
lightpollutionmap.info: An interactive map serving satellite data from the VIIRS Day-Night Band and the New World Atlas of Artificial Night Sky Brightness
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Radiance Light Trends: Allows the to examine changes in nighttime light emissions (nearly) worldwide, from 1992 through the past month
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Sky Brightness VIIRS -
Time Series Inspector: Serves time series plots of satellite-detected nighttime radiance for any point on the ground |
VIIRS DNB Nighttime Imagery: Global nighttime composite images for any date in the past three months
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David Lorenz's Light Pollution Atlas 2020: An interactive global map showing values of the Bortle Scale predicted from World Atlas of the Artificial Night Sky Brightness data
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Measuring and monitoring night sky quality
Loss Of The Night app (Android)
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Dark Sky Meter (iOS)
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Sky Quality Meter
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Telescope Encoder and Sky Sensor (TESS)
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Dark-Sky Conservation
Dark-sky certification programs
IDA International Dark Sky Places
Royal Astronomical Society of Canada Dark-Sky Sites
Starlight Foundation
IDA International Dark Sky Places
Royal Astronomical Society of Canada Dark-Sky Sites
Starlight Foundation
Utah Community Development Office
Dark Sky Planning Guidance and Best Practices: An Introduction for Local Leaders |
How to conduct a sky quality survey: IDA guidance document describing ways to measure night sky quality over territories of various sizes
Note: The use of organizational names, logos and products on this page does not imply endorsement.
