Supralateral Arc


The supralateral arc can be colourful but is spread over such a large area of sky that usually only parts of it are seen in cirrus. It lies mostly outside the 46 degree halo and this image shows about one twentieth of its full extent.

To give some idea of scale a small sundog is visible on the larger image, in the wisp of cirrus just above the power pole at lower left.

A closeup of the fragment shows the pure colours, a pity the cirrus wasn't more extensive !


Canon EOS 20D   28th May 2005
Wiltshire, England

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