Quote:
Originally Posted by Stefan Buda
As I was making the hub for holding the primary mirror, I realized that I can do a test of the finished mirror for eccentricity and co-axiality before taking it off the lathe.
It spun without any perceptible wobble so I'm happy with it.
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How's the glass mounted? Is there an aluminium bush running through it with a retaining ring. Do you use cork as spacers?