Calendar and Regions

Check with the organizing group; some events may be changed

Use the down arrow button to hide some of the regions and see only events in your region. 


AC = Astronomy Club

AS = Astronomical Society

Nat. Mon. = National Monument

NP = National Park

Obs. = Observatory

SP = State Park

IDA Colorado regions

red = Western Colorado

gold = Northeastern Colorado

green = Central-Denver Colorado

blue = Southeastern Colorado

brown = IDA Colorado

purple = Holidays

IDA Colorado Regions map

Regional Coordinators

For regional events and contacts

Western Colorado Regional Coordinators

Aaron Watson, Paonia

Martie Semmer, Blue River

Southeastern Colorado Regional Coordinators

Doug Barrett, Colorado Springs

Central-Denver Colorado Regional Coordinator

Ryan Parker, Castle Pines,

Northeastern Colorado Regional Coodinators

Janae Malpas, Livermore

Richard OBrien, Boulder,

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.