This steadily increasing problem will deffinitely become a genuinely serious issue and not just for the nievely trivial feeling that it's just a case of having to throw a few subs here and there by astrophotographers, just google a few assessments and studies, its not hard
Oh and simply relying on kappa shchmappa blah blah and thinking it will be 10 years before its a real problem, is just not how it is...it's pretty sad really...nutin much we can do about it now either...
Mike