Chapel Hill Astronomical and Observational Society

Club Membership Information

CHAOS annual memberships are $25.00. You can pay with Paypal by clicking this button.



We can accept cash or a check made out to “CHAOS”. Payment should be mailed to our PO Box or given to one of our officers.
P.O. Box 3001
Chapel Hill, NC 27514

Annual memberships are valid from the date dues are paid through the last day of the corresponding month in the following year. (An annual membership purchased on June 1, 2022, will expire on June 30, 2023).

Most announcements are made via the CHAOS email list so we highly encourage all our members to sign up. Check out our list web page for instructions on signing up.

Membership Benefits

  • Members may vote in all elections and may run for and hold offices and serve on club committees.
  • Members may attend and participate in all CHAOS meetings and CHAOS sponsored activities (Non-members may attend a limited number of meetings and may be prohibited from participating in CHAOS sponsored events).
  • Discounts for CHAOS sponsored activities for which there is a charge
  • Discounts on “Sky and Telescope” or “Astronomy” subscriptions
  • Membership in the Astronomical League, including a subscription to the League’s quarterly newsletter, “The Reflector.”