Brent Mckean captured this amazing moonlit scene with three combined exposures on an icy winter morning in Manitoba, Canada.
The colorful rings are a corona caused by diffraction by ice crystals near the direction of the Moon.
Outside those rings, a 22-degree halo was created by moonlight refracting through ice crystals shaped like hexagonal prisms.
On the left and right are 'moon dogs', caused by light refracting through thin, flat, 6-sided ice crystals.
At the top and bottom of the 22-degree halo are 'upper and lower tangent arcs', created by moonlight refracting through nearly horizontal hexagonal ice prisms.
A few minutes later the halo and arcs disappeared and the sky returned to normal -- with the exception of a single faint moon dog.
Image source: https://apod.nasa.gov/apod/ap200224.html
For more on tangent arcs: https://en.wikipedia.org/wiki/Tangent_arc







