of Romania took these on flights during his spells at the Las
Campanas and La Silla Observatories in Chile.
Air journeys are an excellent way to see atmospheric optics events. At left looking sunward is a 22° halo from ice crystals in high cirrus.
The lower view looks opposite the sun. Diffraction by cloud droplets produces a multiringed glory surrounding the airplane shadow. Further out is a cloudbow (a type of fogbow) showing clear supernumeraries.
Images ©Alex Tudorica, shown with permission.