On January 26, 2007, Claudio Martinez watched and photographed a complex diamond dust halo display at the Baqueira Ski Station in the Spanish Pyrenees. Baqueira is situated at an altitude of 1850m. At about 5.30 pm CET the display showed the 22°-halo with sundogs, anextremely bright upper tangent arc, upper and lower sun pillar and the parhelic circle. Part of these was also visible in front of a mountain ridge. In the upper sun pillar there also appeared the Moilanen arc. Nearby floating ice crystals are also visible as bright sparks in the pictures.
There is also a video existing. You can see it here.
At 13.03.2006 accumulate a diamond dust on the 1835m high top of the German mount Wendelstein above a 1400m high cloud layer, which consists of tiny little snowstars and very long ice columns.
Therein forms out a bright glittering lower sun pillar with subsun. After a half an hour both halo kinds weaken clearly, but in return there accumulate two elliptical rings around the sun, before the whole halo spook was disappeared. The diamond dust was in the air all over the day, but no halos were observably anymore.
By Claudia Hinz
