After a largely sunny day, high cloud began to approach Coleraine from the
NW in the late afternoon. Here are a few showing contrails, distrails (I
think they were), contrail shadows and the 22 degree halo.

http://www.mtullett.plus.com/17-may-2004/

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Mike 55.13°N 6.69°W Coleraine posted to uk.sci.weather 17/05/2004 19:48:29 UTC

"Mike Tullett" wrote in message
...
After a largely sunny day, high cloud began to approach Coleraine from the
NW in the late afternoon. Here are a few showing contrails, distrails (I
think they were), contrail shadows and the 22 degree halo.

http://www.mtullett.plus.com/17-may-2004/

Very interesting set of pictures. Some do look very much like distrails
unless (highly unlikely) the shadow just happened to line up as an extension
of the contrail. The obvious shows image is displaced as you would expect.

Jack