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Free Public Observing Night April 25, 2015

Astronomy Day Activities. See: Astronomy Day Page

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

At John Rudy Park, York, PA. Observatory

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 949-963-9147 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 cancelled.

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

The 2015 Night Sky for Public Observing.

Sun

The Sun April 25th is in the constellation Aries the Ram, the Sun sets at 7:55 p.m.

 Moon

The First Quarter Moon on April 25 appears at 50% illuminated high in the south in the constellation Cancer the Crab setting in the west at 1:39 a.m.

Planets Visible for Public Observing evening sky

Venus shines brightly in the constellation Taurus the Bull in the west.

Mercury at magnitude 0.6 is visible just after sunset low on the horizon in the west northwest  setting at 8:23 p.m. You need a clear flat horizon to view Mercury.

 Jupiter is high in the west in the constellation Cancer the Crab and 0928'39" above the Moon. Check out some of Jupiter's Moons through a YCAS telescope.

Constellations

The winter constellations are slowly departing and the spring constellations are rising in the April evening sky as twilight falls. Leo the Lion is rising in the east along with Bootes and Virgo. Gemini the Twins are visible in the west.  Orion the Hunter where, Messier 42, the Great Nebula is located in Orion is low in the west. Left of Orion is Canis Major with Sirius, the brightest star is still visible in our night sky low in the south west.

View the April 25, 2015  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

Superstars

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. 

LIGHT POLLUTION OF OUR NIGHT SKIES

 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

 

WHAT IS PUBLIC OBSERVING?

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 at (949-963-9147).

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.

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