 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.


 Odd-Radius Lunar Halos Encircling Jupiter and Saturn

   October 19, 2021

    PSX_20210825_195952

   Photographer:  Soumyadeep Mukherjee

   Summary Author:  Soumyadeep Mukherjee

   The  halos around the  Moon are the  odd-radius halos caused
   by pyramidal shaped ice crystals, as confirmed by  Les Cowley via
   EarthSky. These sorts of  optical halos are considered to be rarer
   than the  even radius halos caused by plate or column shaped ice
   crystals ( 22° and  46° halos). Also, there are multiple halos
   around the moon visible. As a bonus, these halos encircle  Jupiter
   (on the left of the moon) and  Saturn (on the right of the moon) as
   the three celestial bodies came for a  near-conjunction in the night
   sky. These halos appeared for 10 minutes while I was able to capture
   them from my home in  Kolkata, India. Photo taken on August 21,
   2021.

   Photo details: Gear: Nikon D5600, Tokina 11-16 atx-i lens, f/4, 8
   second exposure, ISO-320, 11mm focal length, Adobe Camera Raw,
   Photoshop
     * Kolkata, India Coordinates: 22.5726, 88.3639

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Applied Sciences Links

     *  BBC: World Water Crisis
     *  Indoor Air Quality
     *  Mathematics in Nature
     *  A Mathematical Nature Walk
     *  NASA: Applied Earth Sciences
     *  Remote Sensing Tutorial

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   Space Research Association.

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