At first I thought this was a meteor going through my 5 minute exposure of the Cave Nebula.
Upon closer inspection it became obvious it was a satellite trail.
(http://www.markshelley.co.uk/Astronomy/2010/sattrail.jpg)
Trust You.
I think it actually adds something to a spectacular image, but you may not see it that way.
Tony G
I like it, I think you skills for capturing Satillite trails are getting upto Fay's levels now.