About the Twin City Amateur Astronomers.

Located in the twin cities of Bloomington and Normal, Illinois, the TCAA was formed in 1960 to share our love of astronomy.

We are a 501c(3) non-profit organization. All contributions are tax deductable.

From our bylaws:

The purposes for which the TCAA is formed are: to promote in every way among its members and the general public an interest in, and knowledge of, astronomy and its allied sciences; to advance amateur astronomy and observational techniques; to render assistance to other individuals or organizations working in the same or related fields; and to do everything necessary and proper to further such on a formal or informal basis.

Things We Do
In addition to our stellar meetings (described below), TCAA members participate in a myriad of thrilling activities, including:
Star parties locally & at dark sky sites Exhibits and displays Lectures Adult-ed programs Talks to schools and scouts
If you would like to arrange a special event for your group, please contact us.
When Stars Collide: TCAA Meetings
We have informal gatherings each month at the Sugar Grove Observatory and elsewhere. Even if you are not a member, you are welcome to participate. Our varied agenda includes:
Planetarium shows (for free!) Thrilling talks! Munchies! Fun!
TCAA Membership Has Its Privileges
Use of our private observatory complete with an LX-200 GPS 12" telescope! Use of any of our five (and counting!) portable telescopes (including a 16 inch!) Star parties at dark-sky sites, field trips, pizza parties, you name it! Unlimited use of our extensive library Our page monthly newsletter, The Observer Optional subscription to Abrams Planetarium Sky Calendar (a $9 value!) Subscription to The Reflector, the Astronomical League's quarterly newsletter An extensive new-member packet A 10-40% discount on astronomy books through the Astro. League Big discounts on Astronomy and Sky & Telescope magazines.
The Legal Nicities
We are a 501(c)(3) tax-exempt organization, and are governed by a set of bylaws that you may read here.
Club History
A complete history of the club from 1960 to the present is now available here.
Associations