The lamp in the photo is a couple of degrees below the horizon and there are 18, 20, 24 and 35
° plate arcs. Plus a bit of a helic arc that in this kind of display could be of the odd radius type or at least contributed by it. This stage lasted only a few minutes after which lesser halos were visible for the rest of night. Under the outdoor light shining in the photo an upper 23
° continued its presence longer. The display appeared on the night of 5/6 January 2017. Temperature was -27
° C.
The photo below shows the location. The camera-lamp configuration is not the same as for the photo above, where the lamp and the camera were more level.
Cool how one can see both sets of 24 deg plate arcs and both sets of 35 deg plate arcs
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