FW: [ATM] make ronchi grating

[quantemlp at hotmail.com (c f)]

that is a nice program :)  I have saved it as a text file,  now how does it 
work?  do I save it as a bat file, or an exe?

thanks a ton for the link :)

clear skys,

charles

>From: "mlbrown@everstrive.com" <mlbrown@everstrive.com>
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>Subject: FW: [ATM] make ronchi grating
>Date: Mon, 26 Jan 2004 16:20:19 -0500
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>Naw, make your own:
>
>Search the archives (http://astro.umsystem.edu/atm/search.html) for "make
>ronchi grating" and you get (amongst many):
>
>http://astro.umsystem.edu/atm/ARCHIVES/JUN97/msg00266.html
>
>For postscript code you can use to print your own gratings on
>transparencies.  Works a treat for me.  I use 133 lpi.
>
>If you look thru the archives, you'll also see several ways to make your
>own, wrapping fine wire or monofilament around a simple frame.
>
>Also try to Google "make ronchi grating" and you'll find:
>
>http://telescopemaking.org/ronchi.html
>
>=Matt
>
>Original Message:
>-----------------
>From: c f quantemlp@hotmail.com
>Date: Mon, 26 Jan 2004 21:07:11 +0000
>To: atm@atmlist.net
>Subject: [ATM] ronchi grating
>
>
>Hello to all,
>
>I have started to polish my mirror, and I have built my knife edge/ronchi
>tester.  the only thing I am missing is the ronchi grate.  I have seen in
>the atm boards that this has been bought at orion, and edmonds,  I checked
>edmonds and they wanted $37 for it,  and newport glass wanted over $20 for
>thiers also.  but the prices I have seen on the boards are all around $6.
>is it possible to make this grating with the computer with success?  or is
>there a web site that I can order this from.  I have ordered the orion
>catalog and will check in there also when it comes in.  I can do the knife
>edge test and wire test with no issues, but I would like to follow up with
>the ronchi.  If anybody has any knowledge of where I can get this grating
>please let me know.  If there is a way to make it and have it done
>correctly, please let me know also.
>
>clear skys to all
>
>charles in wilmington
>
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