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![](icones/trivioletdroite.gif) |
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The others pictures of "Circumzenithal arc" |
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |
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![](icones/trivioletdroite.gif) |
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Circumzenithal arc in a cumulonimbus |
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![Click to enlarge
1024 x 958 pixels (129 kB)](icones_page/dcp_10124-31.jpg)
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Instrument |
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38 mm focal length, composite of 8 pictures |
Exposure & film |
1/700 s with digital camera DC3400 Zoom |
Date & place |
January 14, 2004, Quimper |
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![](icones/trivioletdroite2.gif) |
Here is a case in which a circumzenithal arc can occur. In the present case, a big cloud, a cumulonimbus, mask the Sun. The top o fthe cloud touch the troposphere and generate a kind of thin cloudy layer. In this cirrus-like cloud, the ice cristals diffract the sunlight.
So, a circumzenithal arc, visible in the upper part of the picture, appear. It remained visible a few minutes, till the thin clouds shift. |
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![](icones/trivioletdroite.gif) |
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The others pictures of "Circumzenithal arc" |
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| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |
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![](icones/1x1bleu.gif) |
![](icones/1x1bleu.gif) |
![](icones/1x1bleu.gif) |
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A Shower of Stars in Brittany
![A Shower of in Brittany](icones/couv_pluiedetoiles.jpg)
Brittany by night in panorama!
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![](icones/1x1bleu.gif) |
![](icones/1x1bleu.gif) |
![](icones/1x1bleu.gif) |
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