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Re: [ATM] plate glass blanks



On Wed, 11 Jul 2007, horace r davis wrote:

>  if one was using plate glass 16 inch .94 thick how many point flotation
> would be needed

The website for the 107 cm mirror (www.cruxis.com/scope/scope1070.htm)
claims following:

        * Material: Pyrex
        * Supplier: Intermountain Optics (USA)
        * Diameter: 42" (1067 mm)
        * Focal Length: 4820 mm (190"), f/4.5
        * Thickness: 56 mm (2.2") (!!)
        * Weight: 97 kg (214 lbs)
        * Accuracy: lambda/4
        * Mirror cell: 27-point with side-sling (safety belt from car)


Dominic


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