Ice Crystal Halos

4 comments

  • I saw an odd radius display very similair to this one April 5th this year, and another one with very faint 18 and 9 degree halos just recently.

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  • Nice

    to see, that Thailand has its share of rare halos.

    Is there a scale to the photo? The best I can come up with is the right hand 18-deg column arc.

    Elmar

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  • Actually the arc on the right and left is 18 degree plate arcs. 18 degree column arcs are above and below kind of on the sides.

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  • Thanks, Michael, for correcting!

    Looked it up in Tape’s “Angle x” book. The whole gamut of plate and column arcs is bewildering to say the least.

    Elmar

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