Dear all,
I missed the opportunity to photograph the Comet Hartley on 7 Oct when it passed very close to the Double Cluster. But on Saturday night the sky was clear (and fortunately the neighbors had not turned on their bright porch lights) and I had a chance to observe the comet. Here are two images, one is a 30 sec unguided shot but with decent polar alignment, and the other is a stack of about 50 min of such frames.
Here is a website with info on the comet and some nicer pictures, including one with the double cluster.
Best wishes,
Nimesh