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Rob, I am using the mirror cell that came with the original OTA. It is similar, if not the almost identical to what is in a current model GSO solid tube Dob. It is a round ring, slightly larger than the mirror, with three rubber mirror clamps on the outer edge. I think it is made from a cast metal material, but I am unsure what type. It does the job and I could not justify building an entire new cell, and it certainly a mirror this small did not warrant a flotation cell.
At present I only have some 5mm x 30mm RH screws to hold it secure in the mirror box. The week I will investigate 3 Bob's Knobs-type collimation screws, 3 locking screws and 3 springs. Also how I am going to mount a low profile power toggle switch for the fan.
Last edited by stephenb; 30-07-2009 at 01:54 PM.
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