Illinois Clubs Astronomical Association of Southern Illinois Astronomy Association in Carbondale Champaign-Urbana Astronomical Society Astronomy Society in Champaign and Urbana Chicago Astronomical Society Astronomy Society in Chicago Fox Valley Astronomical Society Astronomy Society in Geneva Kankakee Area Star Gazers Astronomy Club in Bourbonnais Lake County Astronomical Society Astronomy Society in Ingleside Naperville Astronomical Association Astronomy Association in Naperville Nature Institute Astronomy Association Astronomy Association in Godfrey Northwest Suburban Astronomers Astronomy Club in Arlington Heights Northwest Illinois Astronomy Group Astronomy Group in Elgin Peoria Astronomical Society Astronomy Society in Peoria Planetary Studies Foundation Astronomy Foundation in Algonquin Popular Astronomy Club Astronomy Club in Moline River Bend Astronomy Club Astronomy Club in Carlyle Rockford Amateur Astronomers Astronomy Club in Rockford Sangamon Astronomical Society Astronomy Society in Springfield Skokie Valley Astronomers Astronomy Club in Deerfield Skyhound's Sky-Watch in Kankakee County Astronomy Club in Manteno Twin Cities Amateur Astronomers Astronomy Club in Normal
