Last night I was able to get under some cloudy skies and take another image using my new Celestron Edge HD C8. I attempted to collimate it by myself, not so easy BTY. I got close but not perfect. This is 9 subs at 200 seconds on M67.

M67 (Celestron Edge HD C8) The focus was a bit soft, but overall I'm still surprised how flat the field is without a reducer or fattener.