Pollen Corona
enhancement on/off
Date: | 13.5.2008
| Instrument: | f=180mm, Nikon D3
|
Place: | Schelklingen, Germany
| Observer: | Till Credner
|
© Copyright by the observers
Not only water droplets might produce coronae around the sun, during spring
also organic pollen do so. However, the coronae of pollen are smaller,
elliptical, and often with pronounced patches. This is due to their quite
large size and the alignment of the non spherical particles.
See also:
Coronae of water droplets
Les Cowley on Pollen Coronae
M.G.J. Minnaert: "Light and Color in the Outdoors", Springer-Verlag
R. Greenler: "Rainbows, Halos, and Glories", Cambridge University Press