Credit & Copyright: Anglo-Australian Observatory, Photograph by
David Malin
Explanation:
The Sun appears to move on the sky because the
Earth rotates.
The extreme brightness of the
Sun,
however, makes it difficult to capture a sun-trail --
the path the Sun traces on the sky.
To capture the above picture, a very
dark filter covered the camera lens for most of the time,
allowing only a trifle of light from the bright
Sun to peak through.
Just after the Sun had dipped below the
horizon
but before it was completely dark,
the thick filter was removed and the
pretty foreground scene
was captured.
Slight flares
appeared when the Sun went behind thin clouds.
Star-trails and
planet-trails
are much easier to image, and a similar
Moon trail has also recently been imaged.
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A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Publikacii s klyuchevymi slovami:
sunset - star trail - zahod Solnca - sledy zvezd
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