October 10, 2010

Fogbow spectacular


Temperature 8°C, relative humidity 99% and 0.0m/s wind at 08.00 UTC+2 in the morning.

Without the cloud disturbance it was hard not to notice these huge bows. A few hundred meters away on the roadside there was another fellow skywatcher - but wait, after a closer inspection I realized that he was facing towards sun and did not care about the fogbow. Seems that he counted hundreds of migrating birds (Canada Goose/Branta canadensis) who were resting on the field.
This is another fogbow that shows the secondary fogbow fairly well. Additional processing in Photosop brings out even the secondary supernumerary fogbow !
The latter is extreme rarity but can be produced in dark with bright searchlamp (links 1 2).

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