Sundog is because of crystals? Are you sure? Where are the crystals? Even if there were crystals, they would not give such a relatively clear formation.
For me, it takes multiple domes to form such perspective, while the sun has transparent round shell.
And let's check out in this footage:
For you, it works fine. For the real world and science, it's well understood how ice crystals cause the illusion of two Suns.
When you can use math and geometry to show how these 'domes' can produce such images, let us know. Otherwise you're just claiming it's not possible with zero evidence, other than your own disbelief.
Why don't you read the Wikipedia article on them before trying to dismiss the claims? Asking where the ice crystals are shows that you haven't done any research. Read about the thing you are trying to debunk, it helps.
Crystals cannot give such a view. Only dome can.
A new quote to print out for my wall. Yay.