Alborz Mountain Star Trails
Explanation:
Colourful star trails arc through the night in this wide-angle mountain and
skyscape.
From a rotating planet,
the digitally added consecutive exposures
were made with a camera fixed to a tripod and looking south,
over northern Iran's
Alborz Mountain range.
The stars trace concentric arcs around the planet's
south celestial pole,
below the scene's rugged horizon.
Combined, the many short exposures also bring out the pretty star colours.
Bluish trails are from stars hotter than our Sun,
while yellowish trails are from cooler stars.
Near the center, the remarkably pinkish trail was traced by the
star-forming
Orion Nebula.
Authors & editors:
Robert Nemiroff
(MTU) &
Jerry Bonnell
(USRA)
NASA Web Site Statements, Warnings,
and Disclaimers
NASA Official: Jay Norris.
Specific
rights apply.
A service of:
LHEA at
NASA /
GSFC
& Michigan Tech. U.
