Cool: A simulation of what a 22 degree halo *during* a total solar eclipse would look like. It turns out it’s not just the brightness that would differ, because the corona’s a ring, not a disc!
Double the fun: Appearance of the 22° halo during a total solar eclipse – Halo Phenomena
At the Arbeitskreis Meteore (AKM) spring meeting in March 2018, we discussed an observation made by Jörg Strunk during the “US eclipse” from August 21st, 2017: A 22° halo was visible in cirrus clouds around the sun up to around half a minute before the onset of totality. Similar observations…