The Montana Chapter of the
International Dark Sky Association

May of 2019 saw the formal establishment of the Montana Chapter of the International Dark Sky Association.

The Montana IDA Chapter is dedicated to protecting the state's heritage of star-filled night skies.

From its website:

"The chapter is an all-volunteer, educational group working with businesses, towns, municipalites, groups and individuals to keep our rural night skies dark and full of stars, and to help Montanans tackle light pollution issues in our towns and cities."

Montana Dark Sky Destinations

The state's chapter has developed an interactive map of 50 "Dark Sky Destinations" and 10 "Dark Sky Event Centers" scattered across our state. This map will direct you to public campgrounds that are located in some of the darkest areas of Montana's Big Sky.

Please take a lookat this valuable resource if you would like to plan a trip to one of Montana's wonderful Dark Sky Destinations.

We cordially invite you to

"Discover the Universe with The Big Sky Astronomy Club"