Again, a good example of mount X would track better than a mediocre example of mount Y. Doesn't matter what X and Y are.
Imaging Deep Space Objects at 0.3 arc sec per pixel is going to be way oversampled in just about every sky quality. That will cost you signal to noise ratio, and image quality. Tracking at 0.3 arc sec is just about unheard of. On an ordinary nigt, I'll get about 0.7 with my CEM60, carefully autoguided. 0.6 on an excellent night. I've seen 0.5.
This is a complicated business.
Standard image scales (Deep Space Object imaging) are between 1 and 2. Closer to 1 can theoretically get you more resolution, but a number of other things have to cooperate. Seeing (atmospheric steadiness), tracking, optical quality. Otherwise, you've sacrificed signal to noise ratio for no gain. Closer to 2 gets you better signal to noise ratio, no matter what.
Imaging with a 6 inch F8 scope at 0.3 arc sec per pixel would require a camera with 1.8 micron pixels. As far as I know, none exists.
Edited by bobzeq25, 14 June 2021 - 12:53 AM.