A travel photographer has managed to capture this spectacular fire rainbow - a phenomenon so rare he had to ask other experts what it was. The unusual sighting of the horizontal rainbow, which opened like a window through the clouds, was captured by Ukranian snapper Anton Jankovoy. Mr Jankovoy said he came across the spectacular shot on a recent trip to Ghasa in Nepal.
The 23-year-old travels across the world to capture his stunning shots from Mount Everest to remote areas of Ukraine. He said: 'For the last couple of years I've seen a lot of rare and interesting light phenomena like halos, convex clouds, mirages, brocken spectres and fog bows. 'But it was the first time I saw this phenomenon and I was completely astonished.' Mr Jankovoy needed help identifying the bizarre atmospheric occurrence, which is formed when sunlight refracts off horizontal ice crystals in high-level cirrus clouds. The sun must be very high in the sky and it can not be seen at a latitude above 55degrees north (which includes Scotland and much of Canada) or below 55 degrees south.
The young photographer added: 'I'd never seen it before so when I got back home I posted this photo on my blog and asked readers to help me identify it. 'Luckily people even more crazy about rare sightings gave me the exact answer. 'It was a circumhorizontal arc - or as it is also called a 'Fire Rainbow'.' He used an f/4 aperture, which lets a lot of light to hit the sensor. The large aperture effects the exposure time (shutter speed), which Mr Jankovoy set at 1/400 of a second, to avoid too much light ruining the shot.
Morehttp://www.dailymail.co.uk/sciencetech/article-2036443/Travel-photography-Fire-rainbow-revealed-window-clouds.html#ixzz1Xk5Ivjbx
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