Free Public Observing Night April 25, 2015
Day Activities. See: Astronomy
p.m. to 10:00 p.m.
Rudy Park, York, PA. Observatory
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.
observing activities at John Rudy Park, if the weather is questionable, please check our voice message at
for notice of any late cancellation or for an updated
status, check this website.
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.
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
The 2015 Night Sky for
Sun April 25th is in the constellation Aries the Ram, the Sun sets at
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
Visible for Public Observing evening sky
shines brightly in the constellation Taurus the Bull in the west.
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.
is high in the west in the constellation Cancer the Crab and 09°28'39"
above the Moon. Check out some of Jupiter's Moons through a YCAS
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,
brightest star is still visible in our night sky low in the south
April 25, 2015 Night Sky Below
a memorable tour with members of the York County Astronomical Society of
Galaxies, planets, the moon and the constellations of the night sky.
and Constellations Astronomical Pronunciation Guide
the Wonders of your Universe
Picture of the Day
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.
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:
Dark Sky Association
Weather and Directions