Re: [Fwd: ] ATMJ article on grinding a 6" by Russell and Germann

[PFAFF2@delphi.com (Robert C. Pfaff)]

>On a different note, I have received a brochure from Obsession Telescopes.
>They claim that the Endurobrite coatings on their secondary mirrors,
>and I quote, "blows away ordinary enhanced coatings!". 
>Is this claim legit or enhanced BS?
>
>
>Thanks,
>Richard Baier
>

I guess it is true if you beleive 2% more light blows away
and image with 2% less light <G> I am sure my old eyes could not tell
the difference. As a note I understand there was a discussion in 
sci.astro.amateur in which some amateurs felt the Endurobrite
coatings had more light scatter then  enhanced coatings.
I am using a Endurobrite coating on my star diagonal but have
have not tried to test this theory. Any comments ?

Bob Pfaff