Photo of round rainbow makes BOM's calendar...
Photographer: Col Leonhardt
mobile.abc.net.au/news/2020-11-04/bom-calendar-circular-rainbow-col-leonhardt/12847722?nw=0
Select to expand quotePugwash said..
Photo of round rainbow makes BOM's calendar...
Photographer: Col Leonhardt
mobile.abc.net.au/news/2020-11-04/bom-calendar-circular-rainbow-col-leonhardt/12847722?nw=0
Are you sure that is not refraction from the aircraft window?
Even if it is, it's a great shot! 
apparently possible once you get away from the ground (which "blocks" half of the illusion. He did another nice one over Cottesloe
