A really bright Sun Dog (parhelia) was visible on 09 Feb 2017 from Majadahonda. Gently falling hexagonal ice plates create this sky spectacle. The ice particles are located in the distant cirrus cloud formation. The vertical extent of the red hue seems to indicate large crystals, as they are subject to larger wobbling while falling.
If you want to learn more ..
http://atoptics.co.uk/halo/dogfm.htm
http://www.atoptics.co.uk/fz588.htm
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| Left Sundog with increased brightness towards the parhelic circle |
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| Parhelia on cirrus cloud |
If you want to learn more ..
http://atoptics.co.uk/halo/dogfm.htm
http://www.atoptics.co.uk/fz588.htm
 |
| Sundog formation (courtesy ATOPTICS) |
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