Imaged through a Skywatcher ED80, using a Nikon D300. 10 x 2 minute frames stacked in CCDStack. Autoguided on the comet using a Meade 10" RCX400 (for sale in the classifieds!) and a DMK21AF04 camera using PHD.
Imaged through Melbourne haze that seems ever present ATM.
I think you have to go longer, or use a more sensitive camera.
Two minutes was about all I could use as by then the background had turned a horrid brown colour from the haze and light pollution. Maybe a dark sky site would be best!
Driving in to work this morning showed how bad the haze/smoke is...
Attached picture is coming over the Westgate, you can barely see the city.