| Description |
: |
As per Les Cowley at Atmospheric Opitics: "Loosely speaking it _is_ a corona. The reservation is that it only has the central part of the corona called the aureole - the bright whitish disk with a reddish and straw coloured rim. You get an aureole and no rings when the cloud droplets have a wide range of sizes. The result then is that the rings produced have a range of diameters and so they overlap and get washed out. A narrow range of drop sizes produces a pure corona with one to three rings around the aureole.
" |
