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Hi Ken
Nice system, but a note of caution - your scope has a 2m focal length and your class of mount is highly unlikley to guide/image properly at that focal length unless you add an adaptive optics unit. Even with a 6.3 reducer, I would think that you will have trouble. Maybe someone out there with SCT or Vixen mount experience could comment?
If you want to get into imaging with your existing system, why not just get a QHY5 camera or similar and use it for solar system imaging, where you don't need pixel level guiding - your scope/mount/Barlow would be fine for producing good quality images of the moon and larger planets without any further additions/modifications. Then, if you want to get into DSO imaging with a heavier mount and/or possibly a shorter focal length scope, you will be able to use the QHY5 as a guider. Also, your mount may just possibly be suitable for guiding with a shorter, lighter scope.
Sorry to be so negative, but my experience has been that good quality long period guiding is pretty difficult without a good quality, lightly loaded mount.
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