Subj : ES Picture of the Day 04  2022
To   : All
From : Dan Richter
Date : Mon Apr 04 2022 12:01:10

 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.


 The Belt of Venus Above Mount Etna and Piazza Armerina

   April 04, 2022


    Dario_Belt Of Venus Above Mount Etna and Piazza Armerina LD (003)

   Photographer:  Dario Giannobile

   Summary Author:  Dario Giannobile

   The  Belt of Venus is a particular coloring effect just above the
   horizon that can be observed in the east shortly after sunset or just
   before dawn in a westerly direction -- normally between 10 and 20 °
   above the horizon. The  pinkish coloration is caused by Sun’s rays
   illuminating the higher layers of the horizon, coloring them with a
   pink/orange light.

   This sunlight is however partially shielded by the horizon behind which
   the Sun has set (or from which it's rising). For this reason, a shadow
   forms in the lowest layer of the atmosphere, highlighted as a blue
   band, referred to as the  dark segment, below the Belt of Venus. The
   Earth’s shadow in this case should not be confused with the shadow of
   the entire planet that obscures the Moon during a lunar eclipse. It’s
   certainly the  shadow of the Earth but more precisely of a small
   portion; the horizon hiding the Sun.

   In this image, the Belt of Venus and the dark segment can be easily
   identified thanks to the "dividing line" that separates differences in
   brightness and color just above the snowcapped  Etna Volcano. Note
   that below Etna is the city of  Piazza Armerina, famous for the
    Villa del Casale, a  UNESCO heritage site. Photo taken on
   December 20, 2021.

   Photo details: Canon 6D camera, Sigma 150 – 600mm lens, f/8, ISO-400,
   1/60 second exposure
     * Piazza Armerina, Sicily, Italy Coordinates: 37.3730, 14.3559

Related EPODs

    The Belt of Venus Above Mount Etna and Piazza Armerina  Winter
   Rainbow Observed Over Southern Slovakia  Moondogs and Paraselenic
   Arc  Crepuscular Rays in the Philippines and Rainbow Wheel Over
   Belgium  Snow Halo Over Mala Fatra Mountains  Atmospheric Optics
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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?

-
   Earth Science Picture of the Day is a service of the  Universities
   Space Research Association.

https://epod.usra.edu
 
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