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| Lunar Eclipse Takes Place On November 28, 2012 |
The eclipse begins when the Moon enters penumbra at 12:14:58 UT and ends at 16:51:02 UT.
In the Philippines, it is from 8:12 in the evening until 12:53 the following morning.
"Note that the beginning and end of a penumbral eclipse are not visible to the eye," NASA writes. "In fact, no shading can be detected until about 2/3 of the Moon's disk is immersed in the penumbra. This would put the period of eclipse visibility from approximately 14:00 to 15:00 UT. Keep in mind that this is only an estimate. Atmospheric conditions and the observer's visual acuity are important factors to consider. An interesting exercise is to note when penumbral shading is first and last seen."
A penumbra refers to a partially shaded outer region of a shadow that an object casts. A penumbral eclipse occurs when the moon passes through the faint penumbral portion of the earth’s shadow. The lunar surface is not completely shadowed by the earth’s umbra (darkest part of a shadow). Instead, observers can see only the slightest dimming near the lunar limb closest to the umbra. The eclipse may be undetectable unless at least half of the moon enters the penumbra.
Cool! noypistuff.
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