What's New 
  Rays & Shadows
  Water Droplets
  Ice Halos
    Frequent Halos
      22° circular
      Tangent Arcs
        Lower Pillars
        About Pillars
          Plate Pillars
          Column Pillars
            Solar Altitude
          Lowitz Pillars
        Moon Pillars
        Venus Pillars
        Light Pillars
        More Images
      Parhelic Circle
    Infrequent Halos
    Multiple Displays
    Other Worlds
    Observing Halos
  High Atmosphere
  Links & Resources
  Search - Index


  Column Pillars 
Upper column pillars can be comparatively tall even when the sun is several degrees above the horizon.

They are intrinsically faint. In this HaloSim simulation 100 million rays generated each pillar compared with the 10 million rays for the brighter plate pillars. Well aligned crystals were used but column pillar appearance and height are not strongly influenced by crystal tilts.