|
I would say the coatings at this stage are beyond help. They were close to it when originally photographed. The mold has most likely eaten into the glass by now.
Best bet is to clean it as best you can using acetone and alcohol and selling it for parts. Perhaps someone could make an OK solar scope out of it, or a guidescope for an imager.
Shame - I hate seeing ANYTHING fluorite damaged beyond repair.
|