It was 10 degrees below zero, with 30 mph winds in the Alaskan wild,
where the nearest town was 50 miles away, but Sebastian Saarloos came
out alive and with this gorgeous souvenir: a magnificent photograph of
a moondog.
In this image, the first quarter moon is flanked on both sides of a
halo by "mock moons," also known as paraselenae or "moondogs."
The apparitions are formed when moonlight is refracted through thin,
plate-shaped ice crystals in cirrus clouds. They are easy to spot at
an angle of 22 degrees from the moon when it is low in the sky.
SPACE.com has the story:
Here.
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