NSA Club

Northwest Suburban Astronomers

Club Meetings: Meetings are on the Friday nearest the full moon each month.
Check our Events page for each month's meeting location.
Business Correspondence: The club's official mailing address for business correspondence is
PO Box 261, Dundee, IL 60118.

Our club is based in the northwestern suburbs of Chicago. With a wide range of interests, experience, and equipment, our membership is over 150, making us one of the largest astronomy clubs in the mid-west. Here you can find out about our public meetings, star parties, and the benefits of becoming a member. Thanks for visiting, and clear skies.


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Public Star Party - Marengo Ridge Conservation Area (Shelter #2)

  • Marengo Ridge Conservation Area (Shelter #2) 2411 North Route 23 Marengo, IL (map)

The Northwest Suburban Astronomers (NSA), in cooperation with the McHenry County Conservation District, will be hosting a public star party on Saturday, September 10th at the Marengo Ridge Conservation Area (Shelter #2) in McHenry County, Illinois. Look at stars, galaxies, nebulae, and star clusters with the help of NSA member telescopes. Observing highlights may include the planets Saturn and Mars, the Andromeda Galaxy (M31), nebula M57 (Ring Nebula), galaxies M81 and M82 (Bode’s Galaxy and the Cigar Galaxy), and globular clusters M22 (Sagittarius Cluster) and M13 (Hercules Cluster) among others.

Dress for a chilly evening and bring a flashlight covered with red plastic or cellophane (red light preserves everyone’s night vision) as well as insect repellent. Please arrive around 7:00 p.m. (sunset is shortly after 7:00). You are welcome to bring your own telescope or binoculars. In the event of inclement weather the event will be cancelled. There is no cost to attend and no registration is required.

Marengo Ridge Conservation Area is located at 2411 North Route 23, Marengo, Illinois (approximately 2 miles north of Marengo on Illinois Route 23).

Earlier Event: September 3
Public Star Party - Afton Forest Preserve
Later Event: September 16
September NSA Club Meeting