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Re: [ATM] back to longer FL

To: <atm@atmlist.net>
Subject: Re: [ATM] back to longer FL
From: "Bob May" <bobmay@nethere.com>
Date: Mon, 27 Jun 2005 17:54:12 -0700
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That makes things harder when you already have one mirror finished!  The
only other choice is to match as best possible at the last stage of grinding
where you can move the focal length by an inch or more in a wet or two if
you work at it.  Add in two more wets to insure sphericity and you are ready
to polish.  I wouldn't trust a ROC measurement that much until I got a flash
polish on the glass and a check on the Foucault tester.
Bob May
bobmay@nethere.com
http://nav.to/bobmay
http://bobmay.astronomy.net

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Follow-Ups:
- Re: [ATM] back to longer FL
  - From: "Jan van gastel" <jhm.vangastel@wanadoo.nl>

References:
- Re: [ATM] OT: Desktop RPN calculator
  - From: Ken Hunter <atm_ken_hunter@yahoo.com>
- Re: [ATM] OT: Desktop RPN calculator
  - From: "Don D'Egidio" <djd521@comcast.net>
- Re: [ATM] OT: Desktop RPN calculator
  - From: "Richard Schwartz" <richas@earthlink.net>
- Re: [ATM] OT: Desktop RPN calculator
  - From: James P Crombie <jpcrombie@pei.eastlink.ca>
- Re: [ATM] OT: Desktop RPN calculator
  - From: James P Crombie <jpcrombie@pei.eastlink.ca>
- [ATM] back to longer FL
  - From: "Jan van Gastel" <jhm.vangastel@wanadoo.nl>
- Re: [ATM] back to longer FL
  - From: "Bob May" <bobmay@nethere.com>

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