Group of Young People Jumping Up with Beautiful Starry Blue Sky in the Background

Because of the generous financial support of our members, we are able to …

  • Advocate for the protection of the night sky
  • Educate the public and policymakers about night sky conservation
  • Promote eco-friendly outdoor lighting
  • Empower the public with the tools and resources to help bring back the night

Become a Member Today

Our members are the heart and soul of IDA. As a member, you’ll be helping to protect the night sky and wildlife, save energy costs, and lower greenhouse gas emissions.

In fact, nearly half of our annual operating budget comes from our members, which means you’re an essential partner in our work fighting light pollution.

By becoming a member, you’ll receive the latest updates on IDA and night sky protection, including our publication Nightscape, our e-newsletter Night Watch, calls to action, and much more. There are lots of great reasons to join our global community of dark sky advocatesIf you would like to send a check for membership, please make it out to IDA and send to 3223 N. 1st Ave, Tucson AZ 85719. Regular membership starts at $35/year.

Join Today!

Renew Your Membership

Don’t miss out! By renewing your membership, you’ll continue to receive the latest updates on night sky protection, light pollution research, tips on making a difference in your town or neighborhood, and IDA public outreach programs.

Gift Memberships

When you give a gift membership, your friend or family member will be welcomed into the IDA family of dedicated individuals committed to protecting our night skies. Your gift membership includes a personalized card that we’ll send to your loved one. Give a gift today by contacting Susan Ciarniello at or 520.293.3198.

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