Re: [ATM] Flat black reflectivity spec

["Jim Miller" <jim@jtmiller.com>]

don't know about OPEX reflectivity spec but when you're evaluating 
blackening or baffling solutions consider the potential angle of incidence 
of the incoming interfering light. many times the angle of incidence is 
quite shallow. the reflectivity spec may or may not be specified over a 
range of angles that are meaningful to you.

i found krylon ultra flat black excellent in a head on situation but not so 
great at grazing angles. that's why i went to black velvet for grazing angle 
situations.

good luck and dark skies

jtm 

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