From: "Michael D. Crawford" 
To: atm{at}shore.net
Reply-To: "Michael D. Crawford" 


I don't think it would be hard to make a hologram that would focus images. 
The problem would be to make it of high enough quality as to be worth
using.  If you look at any hologram, they have a limit to their resolution
that I think would be unacceptable for astronomical uses.

You can focus parallel light by diffraction with a series of concentric rings.
  If you make a hologram of a bright dot, that's what you get.  But it won't
make a very high quality lens.

Mike
--
Michael D. Crawford
GoingWare Inc. - Expert Software Development and Consulting http://www.goingware.com/
crawford{at}goingware.com

      Tilting at Windmills for a Better Tomorrow.

--- BBBS/NT v4.01 Flag-4