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
UPDATE FOR BELOW COMING IN APRIL
Sun March 21st is in the constellation Pisces setting at 7:18 p.m.
Moon is a thin crescent this night in the constellation
Pisces setting in the west at 9:07 p.m. Venus is
about 12 degrees above the Moon. The planet Mars this night is very
close to the Moon appearing at about a degree from the Moon, actually
at 1° degree, 31' arcminutes and 36" arcseconds apart. Uranus
is 7 degrees below the crescent Moon this evening.
C/2014 Q2 (Lovejoy) is visible this night at 6.1 magnitude high in the northern sky in the
constellation Cassiopeia, about 1 and a half degrees from
Messier-103 an open star cluster. At coordinates RA: 01h 23m 35s Dec: +62°14'30
at 9:00 p.m.. Check it out
through one of YCAS telescopes!
Visible for Public Observing evening sky
shines brightly in the constellation Aries the Ram above Mars and Uranus
in the constellation Pisces the Fish and all three planets will be
visible above the western horizon after sunset.
through a telescope appears at 81.09% phase. See below image of
Venus as it will appear through a telescope.
is high in the east in the constellation Cancer the Crab. You can
see the Great Red Spot of Jupiter before it rotates out of view at
about 8:40 p.m. this night. Jupiter's moons Ganymede, Europa, Io
and Callisto are visible this night. The moon Europa begins
transit of Jupiter, (which means it crosses in front of Jupiter) begins at
9:30 p.m. and Its shadow will follow at 11:20 pm. See below image of position of Jupiter's Moons at 9:00 p.m..
winter constellations are slowly departing
and the spring constellations are rising in the March evening sky
as twilight falls. As
public observing begins Gemini the Twins are visible high
overhead. Leo the Lion is rising in the east.. Below and to the right
(west) of Gemini is Orion
the Hunter where, Messier
42, the Great Nebula
is located in Orion. Below Orion is Canis Major with Sirius,
brightest star visible in our night sky. Taurus the Bull is high in
west. Setting in the west is the Winter Circle, sometimes called the Winter Hexagon,
an asterism which is just a recognizable star pattern
containing the group of bright stars Capella, Aldebaran, Castor,
Pollux, Procyon, Rigel and Sirius. See below.
the Charioteer with its bright star Capella is high in the
northwestern sky and below Auriga lies the constellation Perseus. Low
in the northwest is the setting constellation Andromeda the Princess of Ethiopia
The Andromeda Galaxy, a spiral galaxy which is the closest galaxy to
Earth. Cassiopeia the Queen of of Ethiopia is in the north north
west sky. The constellation Cepheus, King of of Ethiopia lies
below Cassiopeia. Ursa Major
the larger she Bear also known as the Big Dipper is in the northeast
sky. Come explore these constellations and the
stars and galaxies with YCAS astronomers.
March 21, 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