This display was captured by Jan Drahokoupil in Sardinia on 6. September. The 22° halo is surrounded by elliptical circumscribed halo. The small halo around the sun is 9° halo or 9° column arc (or both together). Simulations could give better clue. Later on the display changed and there were also 18° plate arcs.
More photos here.
That's what I've been wondering as well. Should make simulations.
VálaszTörlésWow, nice and clear display!
VálaszTörlésYep, this one's a beauty. It would be great to see photos from the anthelic region also.
VálaszTörlésJari