Very clear Lunar Halo last night

It was both frosty and foggy last night so there were a lot of ice-crystals in the air. I saw one of the most impressive moon Halo’s I’ve ever seen. The inner circle went right in to the moon and was very bright, then there was a bright redish fringe followed by a dark fringe and then another bright fringe. For more information on Lunar Halo’s have a look here: http://www.sundog.clara.co.uk/droplets/cormoon.htm.

I had a look tonight because the weather is similar but th fog is just too thick to see any interesting phenomena.