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Re: [ATM] Finally !

Saqib, don't use the household mirror unless it's a first surface mirror.
 Instead, you can use a prism from a binocular.  Before aluminized
mirrors became readily available, prisms were used regularly to act as
the diagonal and are perfectly satisfactory.

Jarvis Krumbein

On Fri, 30 Sep 2005 22:15:40 -0700 (PDT) Saqib Sajjad
<saqibsajjad@yahoo.com> writes:
> hello all,
> 
> 
> finally i have been successful in getting an optically
> true 4" concave mirror.its focal length is 1828
> milimeter (72 inches). i am planning to use 1 inch
> secondary (house hold mirror). tube(pvc pipe) is
> around 5 inch in diameter with 2mm thickness. eyepiece
> will be 30mm (binocular's). is there anything i
> should/shouldnt be using.any suggestion from everyone
> is welcome !
> 
> Saqib
> 
> 
> 
> 
> 		
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