Very short exposure (typically 15s -20s each) live stacks at the scope with ZWO's ASi224 color camera. No post processing. All images with either a 8" SCT @f3.3 - F4 or a 50mm guidescope (as noted) on an Alt Az mount.
The very low read noise <1.5e and >75% QE of the camera allows for very short sub exposures and makes high resolution EAA possible even with low and mid range Alt Az mounts that are primarily meant for visual observing.
See my thread on CN: http://www.cloudynights.com/topic/508613-new-camera-%E2%80%93-eaa-with-zwo-asi224-with-nexstar-8se/