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| Diamond Dust, Switzerland Willem Koppenol captured the scene at Braunwald, altitude1382m. Diamond dust, whose individual crystals glinted brightly and speckled the larger image, created the below horizon halos. A 22° halo is touched at its lowest point by a lower tangent arc. A rarer arc was visible but that deserves an OPOD all of its own. ©Willem Koppenol, shown with permission. |
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