Re: [ATM] TraceXP, Ronchi Simulation, etc.

[Michael Peck <mpeck1@ix.netcom.com>]

At 17:51 07-06-04, Aplanatic@aol.com wrote:


>my reference to it.  I'm not sure about the physical assumption that you 
>mention, but there is one thing that worries me about this treatment.  An 
>extended source would be comprised of uncorrelated point sources, would it 
>not?  At least for the typical LED light source that ATMs use these 
>days.  If so, then you should sum intensities in equation (4), not 
>amplitudes.  The mathematics

Dave:

Congratulations. I was assuming (I think) spatial coherence, which wouldn't 
apply to a typical LED or incandescent light source. I couldn't figure out 
a computationally tractable way to sum over intensities, although that may 
have been the result of not thinking hard enough.

I have seen some real Foucault test imagery that was reproduced quite well 
by a simulation, although since the slit width, lateral knife edge 
positions, and precise wavefront were unknown that may have been a case of 
having too many free parameters to play with.

Mike Peck

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Michael Peck
email mpeck1@ix.netcom.com
Wildlife photography page http://home.netcom.com/~mpeck1/index.html
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