I have a nexstar 11, the predecessor to the CPC, but essentially the same. Just to give you a different viewpoint, a big attraction is the convenience and simplicity of the setup, especially if you're often having to transport it to dark sites. 2 components only and 5 minutes before you're viewing - no polar aligning necessary. For visual work it's perfect.
In altaz set up it's very stable and suitable for planet webcaming or deepsky photography up to 20 - 30secs if you're willing to stack many short exposures with a DSLR - more than that and field rotation becomes noticable. It can work effectively for deepsky long exposures mounted on a wedge but the G11 would be a better platform if this is your main interest. There is room for a small webcam in any position, and for adaptors and DSLR camera in most except when you're are aimed close to the pole, which isn't such a great loss down here.
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