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Mark- can you post some pictures of your blemishes? I was referring to the fact that there was no reason for him to do free coatings - blemishes are not his fault and compared to the diffraction effects of a spider and secondary mirror are usually of absolutely minimal impact- I would have just run with the overcoated mirror - the straight AL surface will oxidise pretty quickly and look duller after 6 months . If they were not readily visible after the coating was stripped and before coating they are probably pretty negligable.
There would be no way to remove them without professional polishing services. Telescope mirrors need to be accurate to better 1/60,000 of a millimeter-it is not possible to polish of the blems without having to check the surface for change and correct if necessary. A custom mirror of this size is worth at least $2000 today - and Parks had a very good reputation.
Mark S.
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