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- Tue Jan 13, 2009 5:35 pm
- Forum: The Bridge: Discuss an Astronomy Picture of the Day
- Topic: APOD: Unusual Light Pillars Over Latvia (2009 Jan 12)
- Replies: 176
- Views: 189240
Re: Unusual Light Pillars Over Latvia (2009 January 12)
IMO, it appears to be an incomplete "kern arc" or circumzenithal arc: http://www.ursa.fi/blogit/media/blogs/haloreports/riikonen/Jaakko_Tahti_2301_panoraama.jpg They are also seen in artificial lights, such as the image under discussion. This page has many examples of arcs and pillars: htt...