Ice Crystal Halos

Interesting projection... Must have been quite a sight. I wonder what the anthelic region looked like. Diamond dust, right?

This looks like a high cloud display. See the lower tangent arc. So, it is exceptionally good high cloud display.

The projection is great. Would be worth learning this technique. It is like a painting of historical display.

Thank you for high appreciation of the photo! This is a 2-level panoram assemled in PTGui and reworked (generally warped) in Photoshop to display the visual impression more adequately. Thus, this is not a definite projection (although I used spherical projection in PTGui), just a manually adjusted approximation of view.
More accurate version of the panoram can be found here: http://www.ljplus.ru/img4/e/v/evendym/IMGP2945-52sph2_
100407p2smoothed_sm.jpg
(view angle about 180 degrees lateral and 90 degrees vertical).

With best regards,
Dmitry Kuznetsov.

Dmitry you have a wonderful display there I saw my first wegener arc in early 2006 and like yours it had heliac arc. The last great halo I got in Ohio USA was the great March 23rd elliptical halo display that went on for over two hours. I await to see more!!