About Us

Image: Logo of the Cuyahoga Astronomical AssociationThe Cuyahoga Astronomical Association (CAA) is a nonprofit organization established in 1957. Its purpose is to organize local amateur astronomers and to promote the science of astronomy to its members and the general public.

The CAA is a charter member of the Ohio Turnpike Astronomers Association (OTAA), a consortium of amateur astronomer associations sponsoring conventions each summer.

CAA Mailing Address:
Cuyahoga Astronomical Association
PO Box 868
North Olmsted, OH 44070-0868

Contact Us via Email: CONTACT US

The CAA is also affiliated with the Night Sky Network which is a nationwide coalition of amateur astronomy clubs bringing the science, technology, and inspiration of NASA’s missions to the general public.

Image: Night Sky Network

Public Programs & Star Parties

Our meetings and programs are open to the general public. The programs are usually held in one of the Cleveland Metroparks or Medina County Metropark System, and at our observatory outside Spencer, Ohio. The programs typically begin with a presentation of an astronomy-related subject. Following the program, a star party is held (weather permitting).

So, what’s a star party? Many times during the year, and following public programs, members of the CAA bring their telescopes out and allow the general public to view lunar, planetary, and deep sky objects. It is a great opportunity to look through different telescopes and compare them.

Our most outstanding public events?

  • Event with largest number of scopes:  2012 Transit of Venus Edgewater (counted 40)
  • Event with largest attendance:  2017 Solar Eclipse at Edgewater Park (10,000 est)
  • Longest duration of public event: 2005 Astronomy Day at NASA Glenn Research Center — 9:00 AM – 11:59 PM.  (20+ scopes with 4,500 people attending!)
  • Possibly most extreme conditions: 1985-1986 apparition of Comet 1P/Halley at Cleveland Metroparks’ Hinckley Reservation, about 4:00 AM, temperature about 0 degrees, snow on the ground, an estimated 1,300 attended.
  • Largest, unexpected attendance: 2003 Mars party at Huntington Beach (15 telescopes for 200 people; 3,000 attended and another 3,000 people never found parking. Cleveland Metroparks rangers and Bay Village police proclaimed largest traffic-jam in Bay History!)


Interested in joining the CAA? Please visit our Membership page!