EPOD - a service of USRA
The Earth Science Picture of the Day (EPOD) highlights the diverse processes and phenomena which shape our planet and our lives. EPOD will collect and archive photos, imagery, graphics, and artwork with short explanatory
captions and links exemplifying features within the Earth system. The
community is invited to contribute digital imagery, short captions and
relevant links.
Multiple Lunar Halos and Stary Night Sky
December 23, 2021
PSX_20210928_192205(2)
Photographer: Soumyadeep Mukherjee
Summary Authors: Soumyadeep Mukherjee; Cadan Cummings
This feature photo captures several atmospheric optical phenomena
and night sky objects in the sky over Kolkata, India. Most
prominently, two types of lunar halos are visible, a 9 degree
odd-radius and 22-degree halo. Both lunar halos are a product of
light refraction and reflection from ice crystals in the
atmosphere. As their names imply, lunar halos are described by their
apparent radii around the Moon. In addition to the lunar halos,
several additional objects seen in the night sky included the
Pleiades approaching a near-conjunction with Moon, rise of the
"hunter" Orion constellation, and an airplane contrail that
appears to cross the lunar halos. Overall, this photo shows a busy
night sky with a lot going on all at once!
Photo details: Nikon D5600, Tokina 11-16mm atx-i, Digitek DTR 520BH
Tripod; Exif: 30 × 13 seconds, f/3.2, ISO 160, 11mm (Sky), 6 × 6
seconds, f/4, ISO 800, 11mm (Foreground)
* Kolkata, India Coordinates: 22.5726, 88.3639
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More...
Atmospheric Effects Links
* Atmospheric Optics
* Optic Picture of Day: Gruppo Astrofili Galileo Galilei
* Color and Light in Nature
* The Colors of Twillight and Sunset
* Refraction Index
* Image Gallery: Atmospheric Effects
* What is a Rainbow?
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Earth Science Picture of the Day is a service of the Universities
Space Research Association.
https://epod.usra.edu
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