Hello,
my ASA 400mm astrograph need a new aluminum coating.
I have coated both: primary and secondary mirror as well.
In order to proper coat, I have had to dismantle the secondary mirror, that was glued to the support.
The glue was a sort of black silicon or something similar.
What kind of glue should I use to fix again the secondary mirror to the support ?
Best Regards
Fabrizio