From: "Kreig McBride" 
To: "Bob May" 
Cc: 
Reply-To: "Kreig McBride" 


Bob,

Hey, I thought I was first in line for a 12" crown.   How did you get ahead
of me?    :-)

Kreig

-----Original Message-----
From: Bob May 
To: atmlist 
Date: Wednesday, January 15, 2003 10:38 AM
Subject: Re: ATM Corning optical glass


>
>The glass is listed in my list of B&L glasses as a crown glass with all of
>the various indices as needed to do a design.  It is somewhat close to K01
>in the OHara glasses as well but not exactly the same.
>Without the melt papers, the B&L numbers should do very nicely for a
>starting point to making a decent telescope.
>FWIW, I may be interested in the glass if it is 12" in diameter as I
already
>have a Flint and a Short Flint glass that may go decently well with it but
I
>haven't done a raytrace to find out if it really is right.
>If the glass is in the 8" diameter or a little less, I have a piece of DF4
>with a sharp curve in one side that you may find quite useful for making a
>decent doublet of fair quality.  The glass is 8 1/2" in diameter and is
>approx. 1" thick in the center and has a gentle convex on the other side.
>Bob May
>http://nav.to/bobmay
>bobmay{at}nethere.com
>NEW! http://bobmay.astronomy.net
>
>
>

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