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...

TCAA Annual Meeting

When Saturday, February 07, 2015 6:00 PM - 9:00 PM
Status Scheduled
Where Normal Township Hall
What The TCAA will hold its annual business meeting. We will have a dinner, our business meeting, and an address by an invited speaker. Reservations are required for the dinner. The talk will commence at approximately 7:30pm and is open to the public. Our Featured Speaker is Mr Bill Kemp, Librarian for the McLean County Museum of History. His topic will be: On November 13, 1833, the nighttime heavens lit up like a Fourth of July sparkler as tens of thousands of meteors streaked through the darkened sky. Known as the "Night the Stars Fell," it proved to be the greatest meteor shower in U.S. history. What did folks make of this fantastic and fearful display? How did this event alter our understanding of meteors and meteor showers? Learn the answer to these and other questions in this out-of-this-world talk!

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

Clear Sky Chart for Sugar Grove Observatory
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