Vanishing Umbra

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#85581 by @ 09.04.2006 00:00 - nach oben -
Vanishing Umbra


Explanation:


During the
March 29
total solar eclipse, the Moon's
dark central shadow
or umbra
is vanishing beyond
the horizon in this
dramatic view
of the landscape
a few kilometers southeast of Incesu, Anatolia, Turkey.

The large, snow covered mountain in the distance
is 3,250 meter high
volcano
Hasan Dag
.

The foreground is growing brighter as eclipse watchers are just
beginning to see rays of sunlight peek
around

the lunar limb, while the mountains on the horizon,
left of Hasan Dag, are still completely
shadowed by the Moon.

For the watchers along this part of the
shadow track, the
total phase of the eclipse lasted less than 4 minutes as
the umbra raced
over them at more than 3,000 kilometers per hour.


Lecture: href="http://www.princetonastronomy.org/activities.html">APOD editor to give public talk in Princeton on April 11


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