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 Eclipse of the Moon

Lunar Eclipse is a total lunar eclipse on April 15, 2014

The eclipse begins as 12:52 a.m. as Moon enters penumbra.

A lunar eclipse is when the Moon slips into the shadow of the Earth and becomes dark. The Earth casts two shadows in space; a wide, fuzzy one called the penumbra and a narrower, darker one called the umbra nested inside the penumbra. When the Moon moves into the penumbra it begins to fade and more so when it enters the umbra and finally it moves into the Earths shadow causing no light to reach the Moon other than reflected Earth light as seen when your location is in the path of the shadow. See below three images of penumbra, umbra and view of totality for the April 15th eclipse.

Easily visible at totality will be the bright star Spica will be only just over a degree from the eclipsed Moon, and Mars will also be nearby.

The eclipsed Moon at totality will range from bright and coppery red  to so dark as to almost be invisible. This is a product of the amount of dust, volcanic ash and aerosols currently aloft in the Earth’s atmosphere. See times below for York, PA. For other locations other than York, PA. click on the United States Naval Observatory (USNO) Lunar Eclipse Computer link here:  LUNAR ECLIPSE COMPUTER

TIME AND DATA BELOW YORK, PA.


Total eclipse of the Moon
Delta T: 67.0s

YORK COUNTY ASTRONOMICAL SOCIETY OBSERVATORY
o ' o '
W076 42, N40 03

Zone: 4h West of Greenwich

Moon's
Azimuth Altitude
h m o o
Moonrise 2014 Apr 14 19:20 101.5 ----
Moon enters penumbra 2014 Apr 15 00:52.0 177.1 39.6
Moon enters umbra 2014 Apr 15 01:58.0 197.4 37.9
Moon enters totality 2014 Apr 15 03:06.4 216.2 31.9
Middle of eclipse 2014 Apr 15 03:45.7 225.4 27.0
Moon leaves totality 2014 Apr 15 04:25.0 233.7 21.4
Moon leaves umbra 2014 Apr 15 05:33.4 246.2 10.3
Moonset 2014 Apr 15 06:36 256.1 ----

See:   Mr. Eclipse also PDF for Map

 

SLOOH Re-run of the Total Lunar Eclipse of April 15, 2014

About an Eclipse

 

See explanation below.

According to folklore,  a full moon is called the "Hunter's Moon" or sometimes the "Blood Moon." It gets its name from hunters who tracked and killed their prey by autumn moonlight, stockpiling food for the winter ahead. You can picture them: silent figures padding through the forest, the moon overhead, pale as a corpse, its cold light betraying the creatures of the woods.  At first it will seem pale and cold, as usual. And then ... blood red. 

 What makes the eclipsed moon turn red? The answer lies inside Earth's shadow, Our planet casts a long shadow. It starts on the ground--Step outside at night. You're in Earth's shadow. Think about it!--and it stretches almost a million miles into space, far enough to reach the moon. 

Suppose you had a personal spaceship. Here's your mission: Tonight, at midnight, blast off and fly down the middle of Earth's shadow. Keep going until you're about 200,000 miles above Earth, almost to the moon. Now turn around and look down. The view from your cockpit window is Earth's nightside, the dark half of our planet opposite the sun. But it's not completely dark! All around Earth's limb, the atmosphere glows red. 

What you're seeing is every sunrise and sunset on Earth--all at once. This ring of light shines into Earth's shadow, breaking the utter darkness you might expect to find there. Turn off the cockpit lights. There's a lovely red glow.

That same red light plays across the moon when it's inside Earth's shadow. The exact color depends on what's floating around in Earth's atmosphere. Following a volcanic eruption, for instance, dust and ash can turn global sunsets vivid red. The moon would glow vivid red, too. Lots of clouds, on the other hand, extinguish sunsets, leading to darker, dimmer eclipses. Courtesy of NASA by Dr. Tony Phillips