Tuesday 21 November 2017

Display of 11th June 2017 in Pskov Oblast

Each frame of animation covers ten minutes
There were not rare halos during the display, exept for a weak upper 23° plate arc and a 9° halo. However, the display contained classic halo forms that were quite bright and long lived. I want to show you how these halos change their distance from the sun and curvature in nature. The thing that I remember most is the bright upper tangent arc, that was seen against a very thin ice cloud layer (1).
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5 comments:

  1. Nicolas R.21 November 2017 at 20:22

    Nice display animation, indeed. The separation of the circumzenithal arc is also well shown on this.
    You also seem to have catch a Parry suncave arc and infralateral arcs, both sides.

    What software do you use to stack thoses fisheye images ?

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  2. Nicolas R.21 November 2017 at 20:22

    This comment has been removed by the author.

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  3. Nicolas R.21 November 2017 at 20:29

    And one more question: Did you get any other white halo (helic, Wegener,) on a color stack with animation like this one ?

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  4. Nikita Kulanov22 November 2017 at 18:26

    I think it is an upper 23 plate arc rather than a suncave Parry. This arc is diffuse and weak that is not characteristic of a Parry. In addition, the 9 halo appeared together with this arc.

    Software used for stacking those image is Registax. The resulting stacks were combined into the animation through Photoshop. I use this animation method not so long ago, so I have not yet had a chance to record any complex displays, using this.

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  5. Michael Ellestad25 November 2017 at 19:07

    Very nice animation! I like how the halos change shape when the sin rises and I like how the CZA moves up and down as the sun rises

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