Terms of Use

International Dark-Sky Association images on this Web site may only be used for noncommercial, educational purposes and must compliment IDA's mission to preserve and protect our night skies through quality outdoor lighting

Images attributed to IDA must be credited as such.

Images credited to anyone other than IDA may not be used without the consent of the photographer.

Prohibited Uses:

• Images from this Web site may not be used in any unflattering or
  derogatory manner.
• It is prohibited to use any IDA image for commercial use.

If you have further questions regarding the images on this Web site,
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Set A1, the IDA Standard

Set A2, the IDA Standard

Set B, Supplementary Slides

Set C, Satellite Images

Set D, Good Lighting

Set E, Light Sources

Set F, More Supplementary

Set G, Mostly Bad Lighting

Satellite Imagery 

Bad security lighting

Bad billboard lighting

Photograph © Todd Carlson
Eastern North America Power Blackout

Photograph © Todd Carlson
After the power had been restored