Planetarium Learning Center


YCAS Schedule

Public Observing




Tonight's Sky

Mason Dixon Star Party

New Telescope Users Help

Members Websites


Astronomy Classes

Press Release

Lunar Eclipse

Star Party and Astronomy Links




Back to YCAS Home

Free Public Observing July 8, 2017

8:00 p.m. to 10:00 p.m.

At John Rudy Park, York, PA. Observatory

There will be an Astronomy Program in the Observatory if cloudy.

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

Expand your mind by taking in the expanse of the universe.

Come and view the night skies with us through one of our telescopes and let our experienced members guide you on a tour of celestial wonders, including stars, planets, nebulae, and the moon. You are also invited to bring your own telescope and share your experiences with other amateur astronomers. Star Charts are available to help your exploration of the nighttime sky.

For all observing activities at John Rudy Park, if the weather is questionable, please check our voice message at 717 759 YCAS (9227) for notice of any late cancellation or for an updated status, check this website.

To Observatory See: Directions

If it is clear or mostly clear, the activity will occur as scheduled. If it is completely cloudy, raining or snowing, the activity will be changed to an astronomical presentation in observatory.

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

 Visible for Public Observing Night Sky July 8, 2017


The Sun on July 8, 2017 is in the constellation Gemini "The Twins"  setting at 8:38 pm.

New sunspot AR2665, which appeared just yesterday, has already more than doubled in size. NASA's Solar Dynamics Observatory documented the sunspot's rapid development in this 36-hour time lapse movie: Sunspot



Click on Moon to enlarge image.

The evening sky July 8th finds the Moon rising at 8:12 pm in the east southeast located in the constellation Sagittarius "The Archer". Phase of the Moon on July 8, 2017: will be 99.90% of the Moon's visible disk illuminated. The Full Moon occurs July 9th. July is normally the month when the new antlers of buck deer push out of their foreheads in coatings of velvety fur. It was also often called the Full Thunder Moon, for the reason that thunderstorms are most frequent during this time. Another name for this month’s Moon was the Full Hay Moon. Courtesy Farmers Almanac.


Mercury is visible in the west-northwest just after sunset very low on the horizon. Mercury sets at 9:48.


Jupiter is located looking southwest in the constellation Virgo "The Maiden". Four of Jupiter's Moons are visible this night. Jupiter sets at 12:42 am. Jupiter is easily visible in the southwestern sky soon after sunset being the brightest object.


Saturn is rising in the southeast this night located in the constellation Ophiuchus. Saturn sets at 4:16 am.


 The Big Dipper is visible high above the northwest horizon. Right of the Big Dipper is the Little Dipper which contains Polaris the north star. See How to use the Big Dipper to find Polaris the north star. See: Finding North Star. If you follow the curved handle of the Big Dipper it leads to the bright star Arcturus in the constellation Bootes "The Herdsman". Hercules "The Son of Jupiter" is to the east of The Little Dipper containing the beautiful globular star cluster M-13, it is filled with stars. Below and slightly west of Hercules is the rising constellation of Lyra "The Harp" which contains the bright star Vega. Also in the constellation Lyra is M-57 "The Smoke Ring", the remnants of an exploding star is found in Lyra. Leo "The Lion" with it's bright star Regulus is low in the west.. Looking to the south in the constellation Virgo "The Realm of Galaxies" is the bright star Spica and below Spica is found Jupiter the largest planet in our solar system. These are just a few of the many constellations visible this night.

View the July 8, 2017, 2017  Night Sky Below

North - South - East - West - Zenith

 Take a memorable tour with members of the York County Astronomical Society of Galaxies, planets, the moon and the constellations of the night sky.

Stars and Constellations Astronomical Pronunciation Guide

Directions to Observatory

See: Directions

Explore the Wonders of your Universe

Astronomy Picture of the Day

The Known Universe


Our sun is almost one million miles in diameter and a million earths would fit in it.

It takes light eight minutes to reach us from the sun. 

The last star shown in video is VY Canis Majoris which takes light about 5000 years to reach us that is light traveling at 186,000 miles per second x 60 seconds in a minute x 60 minutes in an hour x 365 days in a year x 5000 years. VY Canis Majoris is (almost 2 billion ) 1.7 billion miles in diameter. 


 What does light pollution look like?

What does your nighttime sky look like? Try this fun interactive game to see how light pollution affects the stars you see at night: 

Light Pollution also see: Globe At Night

International Dark Sky Association

See Weather and Directions map below.


Directions to Observatory

See: Directions

The GPS coordinates of the observatory are: N40.024400° W076.704700°



The York County Astronomical Society holds a public observing session every month, check this website for times. 

The club's telescopes will be used to show the public many of the fascinating objects that are up in the nighttime sky. We will also be showing people how to use Star charts to identify the stars and constellations that are up in the nighttime sky. The public is encouraged to bring their own telescopes, if they have one, to learn how to use them more effectively. If you are interested in buying a telescope, this is a great place to ask questions.

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.

Contact us for Scouts Astronomy Merit badge program.

Please Observe Below

While on the observatory's premises: no smoking, food, pets (except guide dogs) or flash photography is permitted, thank you. In accordance with the ADA, those with disabilities who wish to gain access within York County Parks should telephone the County of York human services offices.

The York County Astronomical Society, Inc. is a non-profit organization dedicated to the advancement of the science of astronomy to all concerned Unless otherwise advertised, Most star watches are held at our observatory, located in John Rudy County Park, at 400 Mundis Race Road in York County, Pennsylvania, 17402 , they are free and open to the public. If you have a red-filtered flashlight please bring it along. 


YCAS SCHEDULE See: YCAS Schedule page for more dates

Need help with your telescope? See New Telescope Clinic.

Check out the new show at the YCAS Planetarium. Go to Planetarium link.

Back to YCAS Home