Re: ATM Ronchi test - sharpening the bands

[Cary Chleborad <bennu@ns.net>]

Tom Krajci wrote:
> 
> Cary,
> 
> > Tom Krajci wrote:
> > >
> > > Here's what I gleaned from a short article in "Optical Society Cooke
> > > Book"  (Published by Optical Society of America, ISBN 1-55752-212-X,
> > > cost:  about $25.)
> > >
> > > Start with the typical ronchi test setup:  Diffuse light source (no
> > > pinhole/slit needed), grating over light source, grating also
> > > extending so it intercepts the cone of reflected light just before it
> > > reaches your eye.
> > >
> > > Here's the change from standard:
> 
> > Well lets see here...This message has been sitting in my mailbox for
> > quite some time now naggaing at me to try this.  I finally drew up some
> > artwork using Autocad and photographed it today.  I'm going to slap a
> > mirror on a test stand tomorrow and see how this works!  If anyone is
> > interested in acquiring one of these "two-tone" ronchi gratings from me
> > lemme know and I can crank out a bunch of them.
> 
> Thanks for the offer!  I'm not a big fan (so far) of Ronchi testing,
> but if you post your offer to the ATM list at atm@shore.net I bet
> you'll get some responses!  And maybe even some degree of fame and
> notariety!
> 
> Tom Krajci


GEE maybe your right! I should send the message to the ATM list as I
intended in the first place!  I must have been asleep when I sent this
last night - I feel stupid.

-Cary Chleborad