Wednesday, May 16, 2012

More: May 20 Solar Eclipse & Web Cast

An annular eclipse of the Sun will be visible in the western section of North America on Sunday evening.

An annular solar eclipse is similar to a total eclipse of the Sun, except that the Moon is located farther from the Earth than normal; apogee (when the Moon is farthest from the Earth) occurs within 36 hours of the New Moon phase. Hence, the Moon never completely obscures the Sun, as it does during a total eclipse. This makes an annular eclipse even more dangerous to the eyes, as there is no safe time to look at an annular eclipse without proper eye protection !!!

Safe Way to View a Solar Eclipse:

Visibility of this very special eclipse is possible in a strip of area from northern California and the southwestern tip of Oregon through much of Nevada, Utah, and Arizona (including the "Four Corners") and the southwestern tip of Colorado, much of New Mexico, and ending in western Texas. A partial eclipse of the Sun will also be visible in a larger area of western North America. More info on visibility in the western portion of North America:

A live web cast of this annular eclipse of the Sun can be seen, for areas where the eclipse is not visible. Go to this link for more information on the eclipse web cast:


More detailed info:

** Solar Eclipse ( Annular and Partial Eclipses) visible in western USA ---
* Sat., May 19, 12:00 Noon EDT - Moon at apogee: 406,448 kilometers.
* Sun., May 20, 7:47 p.m. EDT - Moon Phase: New Moon - Lunation 1106.
* Sun., May 20, 7:53:53.3 p.m. EDT - Time of greatest eclipse for the Annular Eclipse of the Sun (similar to a total solar eclipse, except solar disk is not completely covered by the Moon). This Annular Eclipse of the Sun will be visible in a narrow path from eastern Asia through the northern Pacific Ocean, and into the western United States of America; a partial eclipse of the Sun will be seen in a much broader area which includes much of Asia, Pacific Ocean, and the western two-thirds portion of North America.

June 5 - Safe Public Viewing of Rare Astronomical Event:


Glenn A. Walsh, Project Director,
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Author of History Web Sites on the Internet --
* Buhl Planetarium, Pittsburgh:
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* Adler Planetarium, Chicago:
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* Astronomer, Educator, Optician John A. Brashear:
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* Andrew Carnegie & Carnegie Libraries:
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* Civil War Museum of Andrew Carnegie Free Library:
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* Duquesne Incline cable-car railway, Pittsburgh:
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* Public Transit:
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