Antisolar iridescence can be explained in the same way as that iridescence is explained, reminiscent of large rings of the corona, which are distorted. However, for antisolar iridesence it is the glory's rings, which is centered on the antisolar point. Antisolar iridescence can sometimes be seen in lenticular clouds opposite the sun, when the sun is low over the horizon. The coloring is usually very hard to see, and you have to look for it to see it. I haven't seen this phenomenon documented anywhere, which is probably because it is a quite elusive phenomenon.
4 photos in gallery
Click images for large photos