Hi All,
It was clear last night and I imaged comets Lemmon for 5 hours and then PANSTARRS an hour before astro-twilight with Sony NEX5N and Nikon 70-200 f/2.8 lens on Vixen Polarie (great little unit). There was quite a bit of wind but the setup held up reasonably well.
Here is a short animation:
http://vimeo.com/59571509
Cheers,
Alex