by Krystal Tyler. The sun is blocked by the Tucson, University
of Arizona Astronomy Building.
©Krystal Tyler, shown with permission.
wondrous world above
our eyes but below
the stars." Krystal.
The sun was 70°
high when this ice halo formed in cold and high cirrus. It could have
been a 22° halo or a circumscribed from
horizontal columns. Whatever, it is beautiful.
22° halos are often ascribed to "random" oriented crystals
but true random orientations are not needed.
Surprisingly, for this the most frequent of all the halos, we do
not know for
sure what crystals produce it.