Apparently you can use the stuff on diffraction gratings, so I'd
assume it would be ok.  I'd get a small sample and try a tiny daub of
it on the very corner of the filter to see what happens.

Craig


On Mon, May 25, 2009 at 6:22 PM, Claire Brown <[log in to unmask]> wrote:
> I wonder if anyone has used first contact on dichroic mirrors, excitation or
> emission filters? We have both soft and hard coated surfaces. I would assume
> it would be okay for hard coated filters but I am reluctant to try it on
> soft coated ones.
>
> Thanks for any thoughts on this.
>
> Sincerely,
>
> Claire
>