Scope Diagram Astrocamera.Net - Astrophotography by Dave Kodama

Winter Halo (Moon Ring)


The Winter Ring is caused by high altitude hexagonal ice crystals (typically occurring in Winter, of course). The ring has a radius of 22°. An aircraft contrail casts a shadow against a lower layer of light haze.

Photo info
  • Date/Time: 16 Nov. 2021
  • Location: Vanishing Point Observatory
  • Camera: Nikon D600 @ ISO 1600
  • Exposure: 5 sec.
  • Lens/Scope: Sigma 15mm fisheye lens @ f/2.8
  • Filter: -
  • Mount: -
  • Guiding: -
  • Image Processing: Lightroom


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