Not being a fan of the star trailing comet pix that I posted earlier, I had another go this time with 2 minute subs and only 3 of them, 3 darks and stacked on the stars rather than the comet. I think this one turned out nicer even though the tail is almost invisible. The whole light imaging time frame would have been around 10 minutes taking into account the dithering and settling periods of PHD2. In 10 minutes the movement of the comet against the starfield is not too disturbing.
Next we will try the 8" f4 newt.....
Bruce.