I have a C8 and a Takahashi FS60c mounted side by side on a GPDX. The idea is to use one as
guidescope and the other as imaging scope. For this to be effective to 1-2 arcsecond tolerances,
it is essential that the guidescope mount is totally rigid against flexure relative to the main scope.
Other requirements are that the guidescope should be adjustable, and as light as possible, as my GPDX
has enough weight already. It should also not be so big that collisions with the mount will be very likely.
This page shows how I constructed my guidescope mount from cheap or free parts.
NOTE: Click the "Image Info" on each image to see the image comments!