Colin J Denman wrote in
. 13.2:

I'd be interested to know if anyone has used the Baader clear type
film as a protective filter over their optics, and if so whether
they've noted any tendency to improve dewing up of
objectives/correctors etc. Also observations about image degradation?

Thanks,


See http://home.no.net/jonbent/Equipment.html#Anchor-13108
Jon