Regular Meetings:
7:00 pm, 2nd FRIDAY each month
Usually at the Adler Planetarium
or sometimes at Triton College.
Check our Meeting Schedule &
Hubble Lecture Series Sponsorship.

Board Meetings:
Changed to
2nd Wednesday  of each month beginning at 7:30 p.m.,
usually at the
Cernan Earth & Space Center
of Triton College in River Grove, IL.
Open to all CAS members.

Proud Sponsors of

(check "Astrofest")

New 2017 date and location

Information? Comments? Questions?
E-mail us (click here)
or write us at
Chicago Astronomical Society
P.O. Box 30287
Chicago, IL 60630-0287

We are now a Meetup Group.  Click here to access and join Meetup.

The Chicago Astronomical Society is proud to be a certified member of the Global Star Park Network (One Star at a Time).
Click Here for Certificate

Click here for brochure.
Click here for One Star web site.

The Chicago Astronomical Society is a proud member of the Astronomical League.

The Chicago Astronomical Society
is part of the Night Sky Network
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Note to our visitors:
The Chicago Astronomical Society is an educationally-oriented child-safe site. We support advancement in the science of astronomy and astrophysics. This site is registered with the following ratings organization to help protect our children from inappropriate material:


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