Your Local Time:

Shop AMAZON  "Purchases Support YCAS"


Planetarium Learning Center


YCAS Schedule

Public Observing




Tonight's Sky

Donate to YCAS

Mason Dixon Star Party

New Telescope Users Help

Members Websites


Astronomy Classes

Offsite Events

Press Release

Star Child

Lunar Eclipse

Star Party and Astronomy Links



Tonight's Sky

Sky Maps to help find comet Lovejoy now visible in the night sky and upcoming January celestial events at Tonight's Sky. See: Tonight's Sky


Comet Lovejoy

YCAS member Butch Kimmel captured the above image of C/2014 Q2 ( Lovejoy)  January 12th using a 812mm Schmidt-Newtonian. 17- five-minute exposures at ISO 6400 using CLS-CCD filter on modified Canon 600D. Shot in Hanover, PA.



Image below of planet Jupiter by YCAS member Mike Wenz on November 8, 2013 showing the Great Red Spot. 

Image details:

Jupiter imaged on 11/9/13 at 4:24 am through a 10 inch Newtonian telescope. A DMK21af CCD camera was used with a Wratten #38A filter.

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


YCAS Member Discovers Asteroids

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


Observing The Moon

Mike and the Moon

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

York County, Adams County, Pennsylvania Astronomy The Scout Merit Badge Program

I stood and stared; the sky was lit,
The sky was stars all over it,
I stood, I knew not why,
Without a wish, without a will,
I stood upon that silent hill
And stared into the sky until
My eyes were blind with stars and still
I stared into the sky. --Ralph Hodgson (1913)

The York County Astronomical Society, Located in York, Pennsylvania

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

Copyright All rights reserved

Webmaster E-Mail

Hit Counter


The Astronomical League 

The American Meteor Society


International Dark Sky Association

moon phases