Our Work

Recommended
Best Practices

Acceptable Fixtures
Shielding

Many existing lights are not adequately shielded.

darksky.org/lighting-basics
Lighting on Your Property
Home Lighting Assessment

See darksky.org for more.

darksky.org/residential
Four Recommendations

Shielding, color, intensity, timing.

IDA Fixture Seal of Approval

Packages show this seal, which indicates that the fixture meets the IDA's recommendations.

Join Now

Join the International Dark-sky Association

IDA members with a Colorado mailing address are automatically part of the Colorado chapter. 

Colorado chapter members get a monthly newsletter and other benefits.