Wegener anthelic arcs in Ondrejov
Two days (8.6.2006 and 9.6.2006) in Prague and near neighbourhood was very good for halos. The best halo display had Martin Nekola in Ondrejov, he was seen nice Wegener arcs in high Sun elevation (approximately 55 degrees) as big X on anthelion side of Sun. Web site of some next Martin´s halo photos is here.
posted by Patrik Trncak at 19:25
13 Comments:
Wow very nice!!! all we have had is poorly formed common halos in Ohio USA. I did get rainbow with anticrepuscular rays a week ago though.
Congratulations Martin!
Great X of Wegener arc!
Is there a trace of Hastings arc on down right "leg" of the Wegener arcs X? It seems to split into two arcs. That lower could be a Hastings arc and upper Wegener arc.
Jarmo, I was say for Hastings arc too. But I think, it will first Hastings arc on cirrostratus...oh no, it is impossible..and in Czech? No...BUT I seen your comment now and I hope for it! Martin have better photos, I will ask for it.
Hasings arc? I don't think I saw any splitting of the arcs.
Better photos:
http://zeus.asu.cas.cz/~ford/foto/halo/PHK2.jpg
http://zeus.asu.cas.cz/~ford/foto/halo/PHK3.jpg
Here is simulation:
http://halo.kvalitne.cz/ruzne/hast.jpg
I did a simulation of that display with singly and parry oriented columns and I can see seperation between hasting and wegener.
It's a wunderful phenomena, congratulation!!! But I think, the means Hasting is a cloud stripe. Sorry ;o)
Best wishes
Claudia
Claudia: no, it is Hastings arc. Jarmo, Marko: ok, I try normal (no fisheye) simulation.
To Peter: around the Sun was clouds (cumulus), but Martin have some photos from compact camera with fisheye. I hope for Parry.
Here is better simulation:
http://halo.kvalitne.cz/ruzne/simul.jpg
Are you using HaloSim?
If so it would be useful to post the simulation file so that we can run it too and we can also see what crystal parameters have been chosen.
are you sure thats hastings?
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