[Outbackmanyep]

Heres some interesting ones and confirmed what i was talking about.

http://arxiv.org/abs/0803.1505 for Hale-Bopp,

i just found out that they imaged it this year with the Herschel telescope
http://www.observadores-cometas.com/...of_the_day.htm



Interestingly enough they imaged 1P/ Halley as well (below)

http://www.eso.org/public/news/eso0328/

The information was gathered from comets-ml, hope this helps!

Cheers!