From: Rapha‰l_Guinamard 
To: 
Reply-To: Rapha‰l_Guinamard 


Mark,
Your software seems very powerfull. Just one question : For the mirror,
what is the difference between Outside Diameter and Clear aperture ?
I think outside diameter is the glass outside diameter and clear aperture
is the diameter of the aluminized part of the mirror (thus Clear aperture
is slighly < to Outside Diameter).
Am I right?

Rapha‰l Guinamard
----- Original Message -----
From: Mark Holm 
To: ; 
Sent: Tuesday, February 18, 2003 3:48 AM Subject: ATM making a Couder mask


>
> Hi Michael,
>
> If you are running Win 95 or higher, you should be able to use my Couder
Mask
> program.  It is at www.atmsite.org  Look in the subject index under Couder
mask.
> (I think.)  The program will print to a PC - Windows printer.  If your
printer
> will take legal paper, the pattern will fit on one page.  If not, the
program
> will split it across two pages, with alignment marks to help you fit the
pages
> together.
>
> The program uses Nils Olof Carlin's formulas for figuring the size and
location
> of the mask zones.  They may not be quite the same as you would get from
another
> program, or by copying Texerau, but should work pretty well.  Note,
Texerau's
> notation  hm  (I think)  (that is h sub m) for the value that you assign
to each
> zone when you do the data reduction is called  Rcenter in my program.  I
give
> three ways to calculate it, but suggest that you stick with Nils Olof's
version.
>
> Only problems: 1. since I wrote it in Visual Basic, there is a pretty big
> package of runtime files that have to be downloaded and installed.  (It's
all
> handled by the installer.)  You do need to be able to unzip it.
>
>    2. The graphing subroutines use some of the Microsoft Foundation
Classes
> subroutines.  Your Windows installation may have them installed already,
but not
> all do.  If you get installation errors referring to swiftprint.ocx, that
is
> most likely the problem.  the web page where you download the program has
links
> and instructions for getting the MFC files.
>
> Mark Holm
> mdholm{at}telerma.com
>
>
>

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