Just this morning conditions was perfect out to capture a lunar halo which appeared in the sky's over Abbeylands. Ballyshannon, Donegal, Ireland.
The ring around the Moon is caused by the refraction of Moonlight (which of course is reflected sunlight) from ice crystals in the upper atmosphere. The shape of the ice crystals results in a focusing of the light into a ring.
Music - Long Road Ahead, royalty free music by Kevin MacLeod