Optical HALO appeared in Medan

As I said in the last post, I didn't have opportunity when it's happen, so I post it now.

On 22 Sept 08 in Medan, in the afternoon about 11AM to 1.30PM, there is a rainbow which encircle the sun. I saw it from my school. And also I did take 7 photos of it.

Photo #1
Photo #2
Photo #3
Photo #4
Photo #5
Photo #6
Photo#7

Recently I found if it was an Optical Halo(wiki).

When it's going to end, I heard the is a red light inside the circle. (IMO: I think there is something that passing the atmosphere. But I don't what exactly it's)
You can see the pics with red light in wiki article about HALO.