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

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.

On this site you can find out about us, about our public observing sessions, held at our dark sky observatory southwest of Bloomington; our public presentations, which take place at a variety of venues usually in the Bloomington-Normal area; and even peruse our award-winning newsletter, The Observer.

59th Annual Meeting
Our next Event...
When	Saturday, February 09, 2019 6:30 PM - 9:30 PM
Status	Scheduled
Where	Normal Township Hall
What	Please join us for our Annual Meeting. We will hear various reports of club officers, see awards presented, and hold elections for the 2019-2020 Board of Directors. we will hear from Tyler Linder from Sullivan, IL, who will be speaking with us about his professional work making and reducing asteroid observations.
	more...

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

Clear Sky Chart for Sugar Grove Observatory

Welcome to the TCAA

59th Annual Meeting