From: "Richard Ozer" 
To: "Goran Hosinsky" , 
Reply-To: "Richard Ozer" 


Not a dumb question at all.  Many people mask the outer 1/16th - 1/4 inch
of their mirror to eliminate edge problems. An easy way to do it is to
place the coated mirror on a slow turntable and use a sharpie. First mask
the bevel, and then mask whatever portion of the outer edge you are
interested in removing.

RO

----- Original Message -----
From: "Goran Hosinsky" 
To: 
Sent: Sunday, May 11, 2003 9:44 AM
Subject: ATM Probably dum beginners question


>
> TE seems to be a mayor problem when making a mirror. Would it
> be a good idea to use a blank with10-20 mm bigger diameter then
> the target mirror and then use a mask in the telescope to shadow
> the edge of the mirror? This would also resolve the problem with
> diffraction from the mirror holding hooks.
> Goran
>
>
>
>

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