Venus oval corona and pillar
Taken by MarcellaGiulia Pace on January 25, 2025 @
Ragusa, Sicily-ITA
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Camera Used: NIKON CORPORATION NIKON D7100
Exposure Time: 8/5
Aperture: f/6.3
ISO: 1600
Date Taken: 2025:01:27 21:34:31
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Details:
This image captures two rare atmospheric phenomena: an oval corona and a light pillar around Venus.
Oval corona around Venus: This phenomenon occurs when the light from Venus is diffracted by non-spherical particles, such as plate- or column-shaped ice crystals, oriented horizontally in high-altitude clouds. This specific orientation causes a vertical elongation of the corona, giving it an oval shape. The observation of an oval corona around Venus is favored when the planet is low on the horizon, as in this condition, the atmosphere acts as a selective filter, enhancing the effect of the particle orientation. Such observations are rare and require particular atmospheric conditions, as Venus, being a point-like light source, needs particles of specific sizes and orientations to generate this type of optical phenomenon.
More info:https://atoptics.co.uk/blog/oval-aureoles-and-coronae-around-stars-and-planets/
Light pillar (Venus Pillar): This rare phenomenon occurs when the light from Venus is both reflected and refracted by flat hexagonal ice crystals present in the Earth's atmosphere. These crystals act by creating a visual effect of a luminous column extending vertically above or below the planet. Light pillars are more easily observed when Venus is low on the horizon, in the presence of a thin layer of cirrostratus clouds containing the ice crystals necessary for the reflection and refraction of light. The observation of a Venus pillar is a rare event that requires specific atmospheric conditions and a favorable observation position. More info: https://atoptics.co.uk/blog/venus-pillars/
Camera: Nikon D7100: 600 mm, 1,6secsec.; f/6.5; 1600 ISO
Location: Ragusa (Sicily-ITA)
Day: 1/25/2025
Author: Marcella Giulia Pace
Photographer's website:
No URL provided.
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