Re: ATM aargh! maybe

[Mark Holm <mdholm@telerama.com>]

Nils Olaf,

Thank you very much for the elaboration on RMS & mean square error.  It is very 
interesting that mean square error is approximately proportional to the lowering 
of the diffraction peak (for small errors).

Re: your statement:


 >Yes, but even if averted vision peaks near 500 nm, the resolution is
 >pretty low and diffraction is almost never an issue.

The source for the sensitivity curves refers to them as Photopic (Day vision): 
cones active. To be used above 3 cd/m2  and  Scoptopic (Night Vision): only rods 
active. To be used below 3 cd/m2

Are you saying that our telescopes get images bright enough that Photopic vision 
becomes important?  Well, now that I think about it, for planetary viewing, I 
suppose it must, or we wouldn't see those pretty colors.  Right?


Mark Holm
mdholm@telerama.com