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[ATM] questions about the condition of this mirror
Roman,
I would not be too concerned about the back of the mirror. It will quickly become irrelevant when you coat the mirror.
It looks like in an abundance of enthusiasm to complete the mirror, you may have left the fine grinding stage prematurely. That being said, the scratches whuch appear to be on the surface will not make any difference whatsoever in the optical quality of your mirror. It's a fine piece of glass.
Work that TDE until it is good to the edge. Alternate MOT, LOT for thirty minute sessions, 1/3 COC strokes.
Please keep us posted.
Francis J. O'Reilly
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