Luna Halo

I think thats what this is called, a luna halo. I was up studying till the early morning when I decided to look out of the window to see if the sun was up yet but I saw something I've never seen before. This was taken at 5.33am.

Normally, the moon details wouldn't be able to be seen without the background sky details being lost but through the power of photoshop, I merged two exposures to gether to get this image. The halo isn't that obvious I think.