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Credit & Copyright: Rogelio Bernal
Andreo (Deep Sky Colors)
Explanation:
On certain dates in February, an elusive firefall
can be spotted at sunset in
Yosemite
National Park, when the weather cooperates
and the direction to the setting Sun is just right.
Often photographed from vantage points below, at the right moment the
park's seasonal Horsetail Fall is isolated in the shadows of the
steep walls of El Capitan
but still illuminated with rays of sunlight reflected by the angled
rockface directly behind the flow,
briefly giving the waterfall a dramatic fiery appearance.
The Horsetail firefall is more rarely photographed at moonset under a
starry night sky,
though.
Even more elusive by moonlight, the firefall effect can also be seen
when skies are clear and a bright Moon sets at the right direction
along the western horizon.
Skies were clear and stars were shining for this
well-planned photograph of the
Horsetail firefall lit by a gibbous Moon setting in the
early morning hours of May 9.
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: Earth - Moon
Publications with words: Earth - Moon
See also: