The York County Astronomical Society, Inc. is a non-profit organization dedicated to the advancement of the science of astronomy.

 The York County Astronomical Society was started in 1989, and currently has about 70 members in 4 counties in Pennsylvania as well as in Maryland and Delaware

  The Society also has special programs to showcase eclipses, meteor showers, comets, and other special events.

  The Society operates The York Learning Center Planetarium bringing astronomy to the public, presenting astronomical shows and related astronomy programs of the night sky.

  The Society hosts numerous groups for private star parties, from Boy and Girl Scout troops, church groups, school classes, and company groups. We also hold two �Introduction to Astronomy classes each year.

The Society hosts the annual Mason Dixon Star Party. A gathering of amateur and professional astronomers promoting the science of astronomy.

  The Society owns 5 research-grade telescopes, an 18 Dobsonian, 14 Dobsonian and a 12 computerized goto telescope, a 10″ SCT telescope, a 4.5 Newtonian telescope, a 4 Astro-Physics Refractor telescope. In addition for loan to members, the Society owns two 8 Dobsonian telescopes, a Celestron NexStar i 8 GoTo telescope with GPS and a Coronado PST solar telescope.

  The Society also owns a 12 dish antenna for radio astronomy, and associated electronic recording equipment

Contact YCAS

For information on events, scheduling a private party star watch, directions to the observing site, or for general Society information please email YCAS at: E-Mail YCAS Membership applications are available upon request.

Formed in 1989, the non-profit York County Astronomical Society aims to promote interest, public education, and advancement of the science of astronomy. In addition to planetarium shows, the society presents regular public sky watches and astronomy classes.