I'm apologize, maybe I'm too much tired. So here is also info about image:
http://udalosti.astronomy.cz/sdileni/forum/103p-20101012-dss-31x4min.jpg
31x4min, ISO 1600, ED80/600+Vixen 0,67x, Canon 30Da, GSO mount, autoguider.
Michael - now I saw yours perfect image. Nice tail, the best photo of this
comet.
MaG