On Jan 7, 8:35*pm, jerry warner wrote:
Mickman wrote:
It appears recoating is the only recourse. *This secondary convex mirror
coating is damaged with
what appears to be mold that has embedded into it. It doesn't wipe clean. It
stays. It SUX !

if you remove the corrector and secondary put alignment
marks (felt tip pend) on everything so you can reassemble everything just as it
was removed. This is a must. It
preserves the original orientation of the optics - just
as Curtis says...

J.

---snip---

Hi
Don't depend on a felt marker. These will not survive coating.
If you have a demel with a small diamond bit, make a small
mark on the edge or back side of the corrector and mirror.
Dwight