Naperville Astronomical Association
- Naperville
Astronomy club for southwest suburban Chicagoland. Free public meetings and stargazing from our observatory.
www.naperastro.org
Chicago Astronomical Society
- Chicago
Educationally-oriented and supports advancement in the science of astronomy and astrophysics.
www.chicagoastro.org
Calumet Astronomical Society
- Munster
Constellation of the month, gallery, and virtual star party.
casonline.org
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