Messier 31 (Andromeda Galaxy) with Messiers 32 and 110 (AGAIN!)
Messier 31 (Andromeda Galaxy) with Messiers 32 and 110
2018-10-30 & 2018-11-02, Didcot, England
A fresh attempt at this target using two sessions of data. Unfortunately both nights were not ideal conditions (I suffered with dew and high level clouds). I also am still learning the best settings as ISO800 and 300s subs only give me ~40% peak histogram so I may be better off looking at ISO1600 or something. We shall see!
Either way, the addition of Astronomy Tools v1.6 to Photoshop has been a game changer! Additionally the walkthrough guide at www.myastronomyjournal.com/DSLR-AIP/C002-M31-Walkthrough/ proved invaluable to improving my overall processing techniques. I hope that this image has some modesty about the processing as I have previously always been tempted to over-process to squeeze out every last bit of detail at the cost of heavy noise and a somewhat unnatural look.
Skywatcher 130-PDS with 0.9x coma corrector (585 mm, f/4.5)
Skywatcher NEQ6-Pro Synscan
Canon EOS 550D (unmodified) and Skywatcher 2" LP filter
ZWO ASI120-MC guide camera
Skywatcher Startravel 80 guide scope
Acquisition & Processing:
- AstrophotographyTools (APT) and PHD2 guiding with dithering
- 34 x 300s = total 170 minutes @ ISO 800
- 2x20 flats, 16 library darks, library bias
- Stacked in DeepSkyStacker and post-processed in Photoshop CC 2018 (with Gradient Xterminator + Astronomy Tools v1.6)