- Columnar Crystals
- Main axis horizontal
- Refraction at base surface, 4-fold reflection at side surfaces and reflection at opposite base surface
- very rare, more common in ice fog
Description
Crystal Type:
Tricker's antitwilight arch forms a loop over the antisolar point, with both arms extending down to the antisolar point. The brightest parts of this arc can, when the sun is low, take the form of an "X" at the antisolar point. Overall, the arc is very faint and extremely rare to see.
Origin
Tricker's anthelic arc arises from horizontally oriented column crystals, with several ray paths possible. In each ray path, the light is reflected multiple times within the crystal.
Photos
Tricker's Antisolar Arc captured in the Neklid ski area (CZ) on 30.01.2014 (Photo: Wolfgang Hinz)
Tricker's Counter-Sun Bow on the Sudelfeld on 27.10.2010 (Photo: Claudia Hinz)
Trickster's Antisolar Arc in the Cirrus, taken on 12/05/2014 in Sölden (Copyright: Skiline Panorama powered by Panomax*)
* The photo shown is a section of the Skiline Panorama Webcam Schwarze Schneidbahn, Sölden: http://panocam.skiline.cc/schwarzeschneid