Thursday, May 21, 2015

reviewed solar phenomena

Looked up details of parhelia. Found good information on Vincent Jacques's Halos web page.

So, yesterday, I saw:
  • Sun dogs: the usual bright, prismatic spots, left and right of the Sun, 22° from the Sun.
  • At times, I could see most if not all of the entire 22° halo around the Sun.
  • Emanating outward from the sun dogs, I saw the faint 120° parhelia.
  • Above the Sun, I could easily see, while faint, the "parry arc" or "upper suncave." That was a first.
  • High up in the sky, above the Sun, was the fantastic, bright, and colourful "circumzenith arc." Also a first.

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