Re: [ATM] Polishing / Figuring Simulator

["James Lerch" <jlerch1@tampabay.rr.com>]

----- Original Message ----- 
From: "matt" <electro_optic@bellsouth.net>


> Hi James,
>
> Instead of calculating the pressure distribution , why not measure it ?
> A modest 8-16 channel data acquisition system could do that , and it
> wouldn't cost much .

A good idea no doubt, even if a handy calculation was available, it would be 
nice to verify it.

However, DAQ's start around $75 and up, then there is the selection of a proper 
pressure / force sensor or load cell.  I'm not even certain where to start 
there.  One idea might be:
http://dkc3.digikey.com/PDF/T062/1779.pdf

> The pros use not only computer controlled polishing but also computer
> controlled stressed lap polishing.

For a humbling experiance, get your hands on a copy of Wilson's Reflecting 
Telescope Optics II.  Stressed lap polishing is just the begining!

Take Care,
James Lerch
http://lerch.no-ip.com/atm (My telescope construction,testing, and coating site)
http://lerch.no-ip.com/ChangFa_Gen (My 15KW generator project)

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