Fabroone Posted October 4, 2020 Report Share Posted October 4, 2020 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 Link to comment Share on other sites More sharing options...
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