Fwiw Steve didn't have anything in the way of correct spacing parameters to make an adapter for Canon FD to Orion Starshoot auto guider when I last contacted him. I McGuyvered one up by ratting a male FD bayonet from an old slide copier and aralditing it to a T thread from an Orion prime focus adapter which fitted the starshoot AG thread and allowed correct focus at infinity with a little to spare. I think the t thread on your camera is the same size, I can post a pic if it will help. If you can't get hold of Steve I may have a mobile number somewhere.
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