Solar Eclipse over the USA

On Sunday, May 20th, the sun is going to turn into a ring of fire. It's an annular solar eclipse--the first one in the USA in almost 18 years. 

An annular eclipse occurs when the Moon passes directly in front of the sun, but the lunar disk is not quite wide enough to cover the entire star. At maximum, the Moon forms a "black hole" in the center of the sun. Watch the video above or read more at: Science at NASA

YCAS Speakers available

YCAS is available for educational and speaking engagements. YCAS speakers are members on a volunteer basis and therefore limited to evenings and weekends. Contact YCAS at: E-Mail YCAS

Jupiter and Great Red Spot

The excellent image above of the planet Jupiter by YCAS member Mike Wenz was taken on 10/9/2011 at 3:26 am through an 8-inch Newtonian telescope with a DMK21AF CCD camera. 200 images out of 2000 stacked and processed with RegiStax. See larger image: Jupiter

YCAS Member Discovers Two New Asteroids

YCAS member John Sachs has discovered two new unknown asteroids. For more information of discovery and animations see: Discovery

Below is an image of the lunar crater Schiller taken by YCAS member Mike Wenz. It was taken at the YCAS observatory at John Rudy Park in York, PA using the York County's LX-200 telescope and his  DMK21AF04 CCD camera. The images were stacked using around 1000 exposures out of 1500 exposures and processed using Registax. See: Lunar images

Imaging The Moon

Below images by Michelle Wenz showing sunrise on the Lunar surface. Animation was made from Michelle's images. See More here: Lunar Sunrise