Glen,
Visual or imaging?
Visual.... limited by the seeing. I only get average/ less than average seeing down here on the Bellarine. This limits me visually to around x250 mag max.
Imaging...well "lucky imaging" can overcome seeing (momentarily) and the camera pixel (sampling) needs to be considered.
(With say 3 arcsec seeing I can still get "good" imaging with a sampling of 0.8 arcsec/pixel)
|