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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NSA January Meeting

  • Arlington Heights Memorial Library 500 North Dunton Avenue Arlington Heights Illinois 60004 United States (map)

NSA member and regular presenter Mark Christensen enlightens us with "The Jantar Mantar:  The Biggest Calculating Instrument in the World".   The Jantar Mantar is a World Heritage site in Jaipur, India, consisting of 19 different sundials.  Its builder, Rajput King Jai Singh, was an astrologer in the 1700s and observed that astronomical positions in the tables then in use did not correspond to reality.  So he directed the construction over almost 40 years of a series of more accurate instruments.  Recent photographs of the restored site will be exhibited, along with examples of the types of measurements made and details about its  history.

Earlier Event: November 30
November NSA Club Meeting