Sunday, March 10, 2019

Pyramidal halos of Jun 17 2017

A little over half a month later pyramidal halos returned. The first stage of the display shows 9, 18, and 23d halos with 18 and 23d plate arcs and the halos died down around midday. Later on when the sun was getting low the smooth textured cloud of pyramidal crystals began moving in. The 2nd stage was the best with 9, 18, 22, 24, and faint 35d halo with bright lower 9d plate arc, 18d plate arcs and lower 24d plate arcs. When the sun got even lower I got upper 9 and 24d plate arcs which were firsts for me. The plate arcs in the 2nd stage of this display were bright and well formed and they even showed the arc shape due to better plate orientation.












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