Keywords: Halo22a halosim.jpg 22 degree halo c/a 2 hexagonal ice prisms 100 random oriented sun altitude 22 degrees generated using Halosim3 program http //www sundog clara co uk/halo/halfeat htm of Les Cowley This program generates accurate images of atmospheric phenomena by tracing millions of lihght rays by Piotr Flatau 2006-01-27 own assumed Pflatau 22°-Halo Pflatau_meteo |