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Re: [ATM] Ronchi testing

To: "Bob May" <bobmay@nethere.com>, "The Amateur Telescope Makers List" <atm@atmlist.net>
Subject: Re: [ATM] Ronchi testing
From: "Jerry B. Hillman" <JBHillman@ev1.net>
Date: Sun, 9 May 2004 15:36:10 -0500
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Hi Bob,
My Couder masks each have only one set of openings. I have 8 masks.  I have
a lot of difficulty in judging when both openings have nulled equally.  I
can run a set of tests on one day and get fairly consistant readings.  Then
without doing anything and under the same temperature conditions, run
another set of tests the next day and get totally different results.
Obviously, my testing skills are seriously at fault, but I don't know why.
Clear skies, Jerrty


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Follow-Ups:
- Re: [ATM] Ronchi testing
  - From: "Bob May" <bobmay@nethere.com>

References:
- [ATM] Ronchi testing
  - From: "Jerry B. Hillman" <JBHillman@ev1.net>
- Re: [ATM] Ronchi testing
  - From: "Bob May" <bobmay@nethere.com>

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