To: "Jerry B. Hillman" 
From: "John D. Upton" 
Cc: ATM_List 
Reply-To: "John D. Upton" 


Jerry,

At 06:58 PM 8/20/2003 -0500, you wrote:
>It seems that the closer I figure my mirror to what Ronwin20 says it should
>look like, the further apart the center to edge reading gets. I know this
>indicates that I am going hyperbolic, and I don't understand why. I am

     Make sure that RonWin20 matches the type of tester you are
using.  Open the Option Dialog and look at the "Tester Mode" box.
 The "Moving Source Tester" check-box must be checked if your
source and grating move together.  If only the grating moves, un-check the
check-box.

     Also verify that you are using a grating with the proper number of
lines per inch.  RonWin20 assumes the lines per inch means the number of
*black* lines per inch -- not the number of lines and gaps per inch.

     One of those two things should get you back on track...

Best Regards,

John D. Upton
Georgetown, TX
http://www.atm-workshop.com/>     "The ATM's Workshop"
http://hometown.aol.com/RonWin20/> "Ronchi For Windows Home Page"

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