Our Work


What is light pollution?

Lighting Best Practices

Public policy


Lights Out Colorado

The National Audubon Society  and the International Dark-sky Association are working on this new program. 

Dark Sky Places

Officially-recognized Dark Sky Places in Colorado. 

Sirius Star Award

To honor a top contributor to IDA Colorado

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.