[Camelopardalis (Dunk)]

Folks,

I'm looking to optimise my planetary imaging setup. I've read the threads about pixel size and focal ratio (thanks Ray!) so given that my cam has pixels of 3.75 microns, I should be looking to image at about f/19. My usual rig is either my C8 or C11 with a 2.5x Powermate.

Any suggestions for hitting that sweet spot...or should I not be too worried about the focal ratio difference?

Cheers,
Dunk