Warren Astronomical Society
P.O. Box 1505
Michigan 48090 USA
NUMBER OF MEMBERS
The Warren Astronomical Society (http://www.warrenastro.org) meets twice monthly to share presentations about astronomy: observations, cosmology, and history. There's a monthly discussion group that covers all sorts of topics (astronomical and otherwise).
And, of course, there are observing sessions: one to two public open houses per month and many informal members-only observing nights at our observatory, Stargate. Our members perform a great deal of outreach service as well.
Members have the opportunity to check out telescopes and other equipment with a minimal deposit. If you're interested in getting into astronomy but don't know what sort of telescope you'd like, a risk-free trial can be a great help. Attend an event and find out just how much a committed amateur can do.