Hi Nik,
I find this shots taken with the same gear on the same day I took the M8/M20. Used a full spectrum modified 1100D and LPF/UV filter.
All of these are single shot, not stacked. Only slight adjustment in PS for color balance re LPF filter.
At this scale hard pressed to see any CA. Need a barlow and take a shot at the moon or Jupiter to see.... but this scope is not designed for that.
A C14 is
I hope you find this helpful.
Kind Regards,
Mick