On my way home from work I observed 14 different haloforms within 1 and a half hour (14:15 - 15:45 CET). It started with a bright circumzenith arc, sundogs and a clearely vertically elongated left hand side 120° parhelion on a short parhelic circle. Later the 120° parhelion on the right hand side appeared. The highlight (about 15:15 CET) was the observation of the CZA, supralateral arc, 46° halo, suncave and sunvex Parry arcs, upper tangent arc, 22° halo with sundogs, Tape arc, helic arc, subhelic arc and a little bit later a small part of the left infralateral arc.
I run a simulation with Halosim from L. Cowley and M. Schroeder that shows the halos I have observed near the sun quite good. A report and many images can be seen by clicking the image above. I invite you to take a look at the site.
Karl Kaiser
And Wegener arc!
ReplyDeleteI have difficulties to figure out this display, especially the subhelic arc. Sometimes I think that it is just parhelic circle. The simulation is not much help. It is should be centered on the side, rather than on the sun.
ReplyDeleteThats just amazing Karl I like that tape arc and the subhelic arc. I've seen helic wegener arcs in cirrus back in 2006 but in 09 I got wegener three times and in the one display I got my first tricker arc.
ReplyDeleteOk, Karl, yes, I believe now! A great display!
ReplyDeleteI measured the height of the spruce you see in the image mentioned above - it´s about 22°. The subhelic arc was located much higher in the sky!
ReplyDeleteKarl