So I either need a camera with live view so I can focus on a larger display (or a laptop) rather than through the tiny viewfinder, or an iPhone mount / adapter for the eyepiece. Or maybe video is just the way to go, and stacking 20 frames won't cut it at higher resolutions. Since my DSLR doesn't do video, this is still a problem.
|Canon Rebel XT (350D) at prime focus on Meade 285|
|Crescent moon at prime focus, 20 frames stacked in Registax|