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Credit & Copyright: Antonio Gonzalez
Explanation:
Stars can't turn these old wooden arms, but it does
look like they might in this scene
from
a rotating planet.
The well-composed night skyscape was recorded from
Garafia, a municipality on the island of La Palma,
Canary Islands,
planet
Earth.
The center of the once working windmill, retired since 1953,
is lined-up with the
north celestial pole,
the planet's rotation axis
projected on to the northern sky.
From a camera fixed to a tripod, the star trails are
a reflection of the planet's rotation traced
in a digital composite of 39 sequential exposures each 25 seconds long.
Brought out by highlighting the final exposure in the sequence,
the stars themselves appear
at the ends of their short concentric arcs.
A faint band of winter's Milky Way and even a diffuse glow from
our neighboring Andromeda Galaxy also shine
in the night.
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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: star trail
Publications with words: star trail
See also: