A halo around the Moon

There was a beautiful halo around the Moon on Saturday night. My camera is not good enough to capture it. This was an almost half moon that has saturated to look like a full moon. No chance of picking up the delicate halo. I measured with my hand and it was indeed a 22 degree halo. It is a refraction effect. https://en.wikipedia.org/wiki/22%C2%B0_halo