The York County Astronomical Society (YCAS) will offer public events at its observatory at John C. Rudy County Park, 400 Mundis Race Road, York, on Saturday, June 18. Solar and Radio Astronomy will take place from 11 a.m. to 3 p.m., and a telescope clinic will run from 1 to 2 p.m.

Kerry Smith, YCAS member, will present the radio astronomy portion of the event and give attendees a peek into the future of YCAS' radio astronomy endeavors. Radio astronomy is the study of unseen radiated energy in the electromagnetic spectrum below visible light. By using radio astronomy, astronomical phenomena that are otherwise invisible can be studied. Attendees will also be able to view the sun through YCAS' solar telescope, as well as view it remotely on a TV screen that will be hooked up to a telescope.

How to Buy an Astronomical Telescope will be offered to provide information and advice regarding how to buy one's first optical astronomical telescope. Individuals may also bring their telescopes to receive technical assistance from YCAS members.

The event is free and open to the public. Donations will be accepted. If the weather is clear, all activities will occur as scheduled. If it is completely cloudy or raining, the indoor activity of a screen astronomical presentation will occur as scheduled. In the event of extreme weather, call 717-759-YCAS for notice of cancellation or search for "York County Astronomical Society (YCAS)" on Facebook.