Twin City Amateur Astronomers

Welcome to the TCAA

Welcome to the Twin City Amateur Astronomers' web site.

Located in the twin cities of Bloomington and Normal, Illinois, the TCAA was formed in 1960 to share our love of astronomy. We love doing astronomy, and talking about it: so much so that sometimes it takes a good whack across the head to get us to shut up. Ouch!

On this site you can find out 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.

Our next Event...

Autumn Celebration

When Saturday, October 18, 2014 12:00 PM - 4:00 PM
Status Scheduled
Where Sugar Grove Nature Center
What The Sugar Grove Nature Center will hold their annual Autumn Celebration that feature crafts, food, music and all manner of outdoors fun. The TCAA will be there with an open-house at the observatories. Come out and enjoy the day with us!

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

Clear Sky Chart for Sugar Grove Observatory
Visitor Count