Re: [ATM] convex side

["Paul Bradley" <paul@paul-bradley.com>]

Saqib,

You will want to back of your mirror to be flat normally, but if the
front is a good paraboloid and there is no noticable flexure of the mirror
due to the curve on the back then silvering the front would be fine.

Have you foucault tested this mirror?

Paul



----- Original Message ----- 
From: "Saqib Sajjad" <saqibsajjad@yahoo.com>
To: <atm@atmlist.net>
Sent: Monday, October 17, 2005 3:14 PM
Subject: [ATM] convex side


> hello everyone,
> 
> 
> after a week of absence i am back.i am about to start
> work on my 4" telescope.a small problem in my mirror
> which was pointed to me by mahmood when we met(a day
> before the quake).my mirror has convex side coated
> like a house hold mirror such that i get the image
> when i look at the concave side.mahmood pointed out
> that concave side should be coated.so can anyone tell
> me is this mirror worth making the telescope or is it
> piece of junk too?
> 
> 
> Saqib
> 
> 
> 
> 
> 
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