Here’s another ISO 6400 test image and I think it came out pretty well.  Temps were only in the mid to low 60’s, so noise was an issue.  However, the test reveals that with enough sub-images, the noise can be smoothed out.   I did notice that there was a remnant pattern noise that I see when guiding was off and tracking in a certain direction.  Dithering during guiding would help for that, but I did not set that option during my imaging session.  For sure I’ll try that next time.