Circumzenithal Arc ~ Ice crystal halo captured 26th April at Bright, Victoria, Australia by Rob Kaufman. ©Rob Kaufman, shown with permission.

"Only had a fleeting glimpse of this circumzenithal arc as a patch of wispy high level cloud moved through, but luckily the camera was on hand!

Canon 400D at 55mm, polarising filter, Landscape mode.

The halo is made up from the glints of sunlight refracted through millions of plate crystals in high, cold cirrus.


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