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Sunrise rainbow
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1024 x 552 pixels (103 ko)

 1024 x 552 pixels (103 kB)
When the Sun rise or set, the sky is tinted of orange, the blue rays being almost fully scattered by Earth's atmosphere. So, the rainbows which occur at the sunrise (this is the case here) or at the sunset present a lack of blue tints. On this composite, the "green band" is hard to see, and the blue one is... completely invisible!
Further, we note that when the Sun is low, the rainbow elevation is maximum: 42 degrees. Then its altitude decrease as the Sun arise. And when the Sun is at an elevation of 42 degrees, it touch the horizon.

Download a huge size of this picture (1424x768 pixels, 157 ko).
Seen 27501 times
Instrument   38 mm focal length, composite of 6 pictures
Exposure & film   1/60 s with digital camera DC3400 Zoom
Date & place   October 23, 2002, Quimper

 The others pictures of "Rainbows"
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | 32 | 33 | 34 | 35 | 36 | 37 | 38 | 39 | 40 | 41 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 |

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