South is up in this view, which is my preferred orientation because the nature of the tilted disc of M31 is more obvious than when North is up. No flats, bias or dark frames but I dithered and used kappa-sigma clipping during stacking. Camera on tripod only with tracking using Astrotracer (built in to camera).
_Imager: Pentax K-3II DSLR (APS-C). _Lens: SMC Pentax-M 200mm f/4 @ f/5.6 and UV(0) filter _Exposure: 87 minutes (260 x 20s @ ISO 3200). _Tracking: Astrotracer (built in) _Date: August 3rd & 5th, 2019. _Location: Near Conestogo Lake, Ontario, Canada. _Sky Conditions: Bortle ~3.5 (SQM ~20.9), average transparency.
- John Rogers likes this
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