Total Solar Eclipse
A solar eclipse occurs when the Sun, Moon and Earth are on a single line with the Moon in the middle. Seen from the Earth, the Moon is in front of the Sun and thus the Moon eclipses part or all of the light of the Sun. Thus it may seem that a piece has been taken out of the Sun, or that it has suddenly disappeared. The Sun’s corona can only be seen during a solar eclipse. Total eclipses both occur when the Moon lines up with the Sun exactly, but since the Moon's orbit is not perfectly circular it is sometimes farther away from Earth and doesn't always cover the entire solar disc from an Earthly vantage point. A solar eclipse can only be seen in a band across the Earth as the Moon’s shadow moves across its surface, while a total or annular eclipse is actually total or ring-formed in only a small band within this band (the eclipse path), and partial elsewhere (total eclipse takes place where the umbra of the Moon's shadow falls, whereas a partial eclipse is visible where the penumbra falls). Total solar eclipses are rare events. Although they occur somewhere on the Earth approximately every 18 months, it has been estimated that they recur at any given spot only every 300 to 400 years. And after waiting so long, the total solar eclipse only lasts for a few minutes, as the Moon’s umbra moves eastward at over 1,056 miles per hour (1700 kilometers per hour).
Total solar Eclipse schedule
12:31 pm Eclipse begins as partial
1:48 pm Start of total eclipse
1:52 pm End of total eclipse
Start of partial phase of eclipse
3:08 pm Eclipse totally over
Eclipse Safety information
It is extremely important to follow the following guidelines during the eclipse to maximize your enjoyment and to protect your eyesight against serious permanent harm.
When the Sun in partially eclipsed or not eclipsed at all:
• DO look at the Sun through the safe viewer.
• DO NOT look at the Sun without using the safe viewer.
• DO NOT stare through the viewer for long periods.
• DO NOT look at or near the Sun through binoculars or a camera viewfinder.
• DO NOT use sunglasses instead of the safe viewer.
When the Sun is totally eclipsed:
• DO NOT look through the viewer. It is safe to look directly towards the Sun by the naked eye at this time. You will be unable to see the magnificent spectacle of the Sun’s corona through the viewer.
• DO listen for the announcement that totality is about to end and have your viewer ready. Look away quickly or use the viewer immediately if you see the first brilliant flash of the Sun appearing.
posted by Hills @ 12:49 AM
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