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Hi Graz, sorry for my late reply, I often just rely on my daily notification emails.
As ever, Rick is right. There's a very specific canon bayonet adapter I got from Claude at AEC. Maybe call Claude and tell him I referred you :-)
But for CCD be very careful. I just did my head in with my new setup, the new ASI cam.
Backfocus is 56mm, yes. But with all my contraptions, filter wheel, OAG and custom designed precise parts adapter, I only had 15mm of back focus left. And that's with my cam only having a 6.5mm backfocus itself. I searched heaps but couldn't find any adapters for the cam, as the Tak focus size is unique. So it was rather easy to spec the adapter via precise parts.
Focus zone is even more critical with the f2.8 scope.
Best of luck!
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