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I got isaac from C-Qin to recoat both lenses from my 4" Unitron achro. It cost 750, and a great deal of mucking about, as you will need to know what glass was used in the lens because the coating thickness depends on the refractive index of the glass. Although it exorcised the ghosts from my old scope, I'm not sure if it was worth it. I also understand he no longer has access to the coating facility he used.
regards,
Andrew.
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