Hi Bill
I used the 8" (200mm) square steel plate as that was what I had lying around, no point in wasting it. I would be inclined to use the 10" round plate to mount the MA. The thing that you have to bear in mind when using a square plate is that you may not be accurately aligned with the pole, with a square plate and just using the MA alone you may find that the Control Box sticks out at an awkward angle if it is not perfectly square with the pole.
I overcame that by mounting the Losmandy 12" extension on top of the MA, They are compatable. I used the MA because it allows you, by loosening the centre bolt, to turn the base to get a better alignment. Once your close, you can tighten the bolt and use the azimuth adjusters on the G-11. The MA is 6" in dia and 4" high and is fitted with the mounting posts for the Gemini Box or the Digital Drive Box.
Cheers
Last edited by JohnG; 02-02-2011 at 12:37 PM.
Reason: Added a couple of pictures
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