Re: [ATM] 27" dia. x 5" Zerodur Mirror Blank For Sale on eBay

[James P Crombie <jpcrombie@pei.eastlink.ca>]

Bill
  Check out the Project 70 website.  http://group70.org
They are working on  a 70 blank left over from the 30's

bill kocken wrote:

>Mr Volna is a member of our club, ( The Minnesota Astronomical Society ).
>He gave a wonderful talk to our club earlier this year about his mirror and
>lens making escapades.  He has had this mirror blank for sale for number of
>years but to date no one has demonstrated that they have adequate equipment,
>tools energy and resources to make the mirror into a successful telescope.
>The issues of dealing with such a mirror are staggering.  How do you grind,
>polish figure and test such a beast, how do you move it, where on earth will
>you get it coated?
>Bill Kocken
>----- Original Message -----
>From: "Jerry B. Hillman" <JBHillman@ev1.net>
>To: "CHOUDHRY,JEAN-PHILIPPE PASCAL" <jpc1@ucla.edu>; <atm@atmlist.net>
>Sent: Wednesday, July 21, 2004 7:02 PM
>Subject: Re: [ATM] 27" dia. x 5" Zerodur Mirror Blank For Sale on eBay
>
>
>  
>
>>Hi All,
>>About a year ago Ken Hunter gave me a web site that has a 72"  Zerodur
>>mirror blank for sale. It was $25,000.  The website doesn't list it for
>>    
>>
>sale
>  
>
>>anymore so maybe he sold it.
>>This is the site
>>
>>
>>http://volnaengineering.com
>>
>>
>>Clear skies, Jerry
>>
>>
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