Yep, fully agree with Liz.
Here are some of my images from the wee hours of 5 Jan, linked below. There was still a bit of moonlight in the sky but the Moon had disappeared behind the hills. 2:10am, 05 Jan local time (15:10, 04 Jan UT):
http://i727.photobucket.com/albums/w...fulladjred.jpg
Star trail stack, showing growing proximity of tail to South Celestial Pole:
http://i727.photobucket.com/albums/w...012copycsm.jpg
Animation with my last useable image from 2 Jan UT. Extent is limited by the 2 Jan shot but tail is showing faintly out to the top of that frame, or 33-degrees. Can't be certain of anything beyond that.
http://i727.photobucket.com/albums/ww271/Rob_Kau/gifanim02-04Jan2012.gif
Experiment earlier in the evening at 55mm, in bright moonlight (11:55pm on the 4th, local time). Shows what a ghost this comet is now and how hard it is to get any detail in a bright sky:
http://i727.photobucket.com/albums/w...UT55mmtext.jpg
Visually wasn't much to see with the lingering moonlight. I seemed to get some faint flashes of the tail in averted vision but nothing I could hold. I don't think that three bright stars spaced out along & close to the rough line of the tail helped.
Cheers -