I imaged this on the 30/10/21. One of the most stable nights I've had for a while. The HEQ5 was around 0.4 arcsec total and FWHM < 1.7 which is good for me.
C8 at F10 with ASI294MC, OAG, HEQ5Pro, ASIAIR Pro
80 x 130 sec OSC subs (from 100 captured). Gain 121 at -5C
Outer Melbourne with B5 sky.
It was just a great atmosphere over my backyard this night.
Apologies for the coma at the edges however, I've tried this with a 6.3 and I wasn't happy with the detail. Not enough pixels under the subject.
Can anyone tell me why there are "smudged" areas of reduce detail in the disc, to the left and right of the core? I thought it was me, but they are on all other images of NGC253 too.
Chris.
https://www.astrobin.com/5bvwxn/