Lapinjärvi halo display pt. 1

Observed phenomena: Halo phenomena
Light source: Sun
Origin: High clouds (cirrostratus)
Observed halo forms:

  • 22° halo
  • Upper tangent arc
  • Lower tangent arc
  • 46° halo
  • Circumzenithal arc
  • Supralateral arc
  • Infralateral arc
  • Parhelia
  • Parhelic circle
  • 120° parhelia

Date: 10.4.2012
Time: 07:50-12:20
Observing place: Lapinjärvi, Finland
Observing method: Photography
Technical information about photographing equipment: Canon EOS 1000D, Canon EF-S 18-55mm, Samyang 8mm fish eye

On 10th of April 2012, in Lapinjärvi, Finland, I observed one of the best halo displays in my life so far! In the morning, the display started with 22° halo, circumzenithal arc and 46° halo. Later around noon, the best part of the display started! Then 22° halo, infra- and supralateral arcs, parhelia, parhelic circle and 120° parhelion were visible!

All halo forms that I observed during the day, were very well developed, which means, that the crystals that caused the halos were perfect in shape and they were floating in very stabile positions! The halos were clearly visible visually, but I used unsharp mask to enhance the halos in the photos.

Here’s some photos from the display of 10.4.2012

More photos here:


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