Tuesday, February 11, 2014

atmospheric halos


This website gives some names for what was seen in the sky here yesterday.

The temperature out, was around -25 C
In the Takhini Valley ( in which i live) hang an ice fog, seemingly clear skies, but when looking along the horizon, a clearly visible fog, greyer then the the blue sky above, lined the horizon.
The Sundogs were visible all through the day.

I will try with the website above now to give names to the halos showing in the photos i took. That was all we saw, there were no more halos beyond that , that I and Don saw.

in the middle the sun.
there are two sundogs (parhelias).
the halo in which the sundogs show is the heliac arc or 22 degree halo.
the dish sitting on top of the 22 degree halo, is  the parry arc or upper tangent arc.
The second halo is 46 degree halo.
the dish on top of that is the circumzenithal arc

now in the photos i also see a slight halo in between the 22 degrees one and 46 degree one?  Or is that called the upper tangent arc, what is then the name of the dish itself?

okay, as i see it, the dish appears to be visible because of hasting's arc or one close to that, wegener's arc.
These two arcs themselves were not visible to me.

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