Twin City Amateur Astronomers

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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... Venus Transit When Tuesday, June 05, 2012 4:30 PM - 9:00 PM Status Scheduled Where Sugar Grove Nature Center What We will hold a viewing event for the last Venus Transit of our lifetimes. An introductory presentation will be held a 4:30pm. During the transit, which starts at 5:04pm and continues past sunset, Venus will cross the face of the Sun. We will have specially modified telescopes available so we can safely view this rare celestial event. Please come join us as we celebrate this amazing planetary conjunction. more...
We are a 501c(3) non-profit organization. All contributions are tax deductable.

Hubble Space Telescope image: Hubble finds dark matter ring in galaxy cluster
 
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