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Ice Crystal Halos
A halo, or ice crystal halo, is formed by light refracting and/or reflecting from ice crystals in the atmosphere.
Ice halo displays range from the familiar circle around the sun or moon to rare and prized events when the whole sky is webbed by intricate arcs, circles, pillars, tangents and parhelia. Most all of these least common halo displays are never seen many people.
(m5ph-halo-parhelion) Ice Crystal Halo Map
Most Common Halos
The list of most common Halos are: circumhorizontal arc, circumscribed arc, circumzenithal arc, 22° parhelion, parhelic circle, pillars, tangent arcs, 22° circular halo and 22° paraselens.
Least Common Halos
The list of least common Halos are: anthelion, diffuse arcs, hastings arcs, heliac arcs, infralateral arcs, Kern arcs, Lowitz arcs, Parry arcs, subhelic arcs, superlateral arcs, tricker arcs, Wegener arcs, 46° halo, 44° parhelion, 120° parhelion, and the list continues.
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