Re: [ATM] Foucault images

[Dale Eason <atmpob@yahoo.com>]

I can't seem to match the number of lines with a 133
screen using my simulator.  However I can get the same
kink in the middle using 38 waves PV on the Surface.

http://www.atmlist.net/contrib/atmpob-at-yahoo-dot-com/38waves.jpg

There may be other combinations but I used 133 LPI
-.05 inch offset and perfect correction.

Dale Eason

--- Mike Lockwood <melockwo@uiuc.edu> wrote:

> Hi,
> 
> Mike Lockwood wrote:
> > More photos (Foucault and Ronchi) of a horribly
> astigmatic mirror 
> > coming soon - you don't want to miss it!!!
> 
> As promised, I have added "Mirror #5" to my Foucault
> Testing Hall of 
> Shame, which you can visit at
> 
>
http://bi-staff.beckman.uiuc.edu/~melockwo/mirror_making/foc_hall/foc_hall.html
> 
> Scroll to the middle of the page.  Please don't do
> that to your mirror!!!!
> 
> I included the Ronchi photo in light of the recent
> discussion of 
> detecting astigmatism with that test.
> 
> Someone please estimate the amount of astig for this
> mirror.
> 
> 	Mike Lockwood
> 
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


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