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A potential weakness of the VC200L is the R&P focuser - although it is a good one and has a large throat to minimise vignetting, it can get a bit challenged by a heavy CCD camera rig if you are using some sort of conventional motorised focus. I use an FLI DF2 for fine focus and keep the R&P locked up - works very well. The focal reducer however, eats up much of the back focus necessary for a large imaging train. There is an example of one of these scopes which has the native focuser replaced by an Optec TCFS focuser - very impressive but not for the faint hearted - it would be tricky to deal with the internal corrector lens inside the focuser tube in this conversion.
guy
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