Right in my front driveway, one chilly morning, the most amazing display of cloud iridescence I’ve seen breezed by in the mid-troposphere, within a patch of altocumulus translucidus undulatus that was wavy horizontally as well as vertically. I placed my big ol’ fist before the sun and deliberately underexposed the surrounding blue sky by a few stops, in order to capture the fullest possible beauty and coverage of the dazzling iridescence display that greeted my eyeballs (also using hand to block sun).
Norman OK (28 Feb 23) Looking ESE