Re: [ATM] Mirror F/L

["Jonathan Lavoie" <atm@lavoielactee.net>]

Use the same tool for both, you'll be sure they keep the same f/ratio if you 
work a bit on one then a bit on the other alternatively.

Also if you want to simulate a polish to do a quick RoC test, use vegetable 
oil instead of water.

Jonathan

----- Original Message ----- 
From: "c f" <quantemlp@hotmail.com>
To: <atm@atmlist.net>
Sent: Wednesday, July 27, 2005 1:25 PM
Subject: [ATM] Mirror F/L


> Hello to all,
> well, once again I look to the collective minds of this board for some 
> help on a question.  I have ground down by hand 2 - 12" mirrors.  went 
> through the #80 down to f/5.3.  I have now gone through the 120 grit, used 
> a sper on it and magnifying glass, looks great.  Now the question,   what 
> is the best way to make sure and keep these both as close as possible? 
> can I wet the mirrors and run a ronchi test on it? or is that out due to 
> the non polished aspect of the mirror.  any input would be wonderful.
>
> clear skys
> charles in wilmington MA.
>
>
> _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 


_______________________________________________
ATM mailing list http://www.atmlist.net/