It was nice to see under a dark sky last night, I could see about 15 deg of tail, although I wasn't fully
dark adapted due to looking at the LCD screen of my camera every 30 sec or so.
The straight tail, which I assume is some sort of ion tail, is brightest in green light rather than blue, so its probably not a regular ion tail. The Sodium tail from a couple of weeks ago seems to have gone as there is no sign on it in red light now. Last night's pics here:
http://members.ozemail.com.au/~loomberah/mcnaught.htm
cheers, Gordon