Data captured on the nights of December 22nd, 24th and 25th 2016 and processed in Pixinsight using
David Aldrich's workflow. I took David's advice and kept the exposures short. I had wanted to increase the ISO too but the subs looked overexposed so I kept to 200. In hindsight, PI does such a great job of background neutralization that I think I would have been safe at 400.
I didn't start capturing until after M31 crossed the Meridian (to avoid a flip) pretty much at the zenith and stopped exposures around 30 degrees above the horizon in the West when local sky glow starts impacting the data noticeably. The last set of subs from Dec 25 were taken with PHD2 after advice from Astrobin user Wei-Hao Wang in
this AB forum last week. Very glad to have made the switch.
The target was a test to see if I could get decent results with my Explore Scientific Achromatic Refractor or if it's use would be limited to visual. I'm pleased but you be the judge. Certainly beats my
last effort.
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