[tornado33]

Hi all
Thanks very kindly to Paul (Photoncollector) who has sold me his Argo Navis digital telescope computer. Most importantly, as he has the same mount as mine, the old Astro Optical Supplies "Sampson" GEM, he has cleverly designed a custom mate encoder and gearing attachment to both the DEC and RA axes of the mount. As you can see theres a white gear wheel for each axis, so its geard down for even better encoder resolution.

I guess theres not that many Sampson mounts out there, but if anyone has and wants to put an Argo Navis on it, contact Paul (Photoncollector), he had the gears custom made and knows how it was all set up. he did a stirling job designing the attachments, they gently press the gears together so no backlash.
Scott