Tonight did a deeper image of Comet Lovejoy with the 300ff f2.8 lens from Bert. 15 x 5 mins with aperature stop at around f3.5, Modded 350D. Also negative showing the tail more. Waxing moon made the sky a bit bright.
Scott
I bounced my 70-300 mm on the concrete a few weeks ago, it no longer focuses. Only realised it the other night when I tried for the same image set you have. *(