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Re: [ATM] f12 mirror advice requested

To: Gil McFarlane <gilboastro@yahoo.com>
Subject: Re: [ATM] f12 mirror advice requested
From: Dominic-Luc Webb <dlwebb@canit.se>
Date: Fri, 2 Feb 2007 20:47:58 +0100 (MET)
Cc: ATM <atm@atmlist.net>
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On Fri, 2 Feb 2007, Gil McFarlane wrote:

> I have been surprised at how easily the focal length
> changes when smoothing this mirror - I am beginning to
> suspect that there may other surprises in store as I
> finish it up - any suggestions?  (it is a 5" diameter,
> 1" thick blank.)

I think this is partly because it is F/12. Polishing any
noteworthy change on my F/1.0 would take approximately
two to five eternities.

Dominic-Luc Webb

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References:
- [ATM] f12 mirror advice requested
  - From: Gil McFarlane <gilboastro@yahoo.com>

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