Bertram Radelow was the observer of this halo display on 14 December 2009. The temperature was -15 degrees that morning in Davos, Switzerland, and the crystals originated from the nearby snowguns. Further images of the display are available on Bertram’s site ( 1 – 2 – 3 – 4 ).
A beautiful and atmospheric (excuse the pun) image!
It’s a pretty good 46 halo here. In lamp light blue circle etc would have been possible.
Yep, 46 deg sunlight halos like that are hard to come by.