WOW - what an amazing comet this is. Clearly visible in the twighlight as a great streak - just an awesome sight. Got heaps of shots tonight (18th Jan), a sample of which are below. I haven't processed these shots (mostly because I don't know how

) apart from some resizing and the last one is a crop of a slightly larger image.
Details (all with 400D)
1) 2.5sec, ISO 100, using 4" ST Refractor (500mm focal length)
2) 10sec ISO 200, F5.6 (18-55mm kit lens @ 55mm)
3) 21sec, ISO100, F3.5 (18-55mm @ 18mm) - shows the streamers from the tail
thanks for looking