Re: ATM A fairly good mirror, I think

[Dominic-Luc Webb molmed <Dominic.Luc-Webb@molmed.ki.se>]

Alright... so before I start bashing the fuocault test
bashers, could I ask if the original poster has any
idea whether the atmospheric conditions and application
even warrant the time to produce such a high precision
mirror?

There is sanity to this question. It takes a lot of
time to produce these very high precision parabolas,
but very often no gain in having them because the
end product will be used in an urban environment for
non-technical applications under poor seeing conditions
where identifying the lack of "high" precision requires
testing the Strehl ratio on an optical testbench to
find. I think it comes down to feasibility. How sloppy
is poor workmanship, and sloppy is merely delaying the
use of the scope?

I gave up (in most cases) with much more than pass/fail
eyeball inspection of ronchigrams. OK, sometimes, I do
more complicated tests, but more out of curiousity, or
boredom, than need.

Cheers,



Dominic

North 59 37' 30"
East  17 48' 10"