XPost: sci.space.policy   
   From: vitalmis@optusnet.com.au   
      
   Henry Spencer wrote:   
      
   > In article <42739759.419739273@newsgroups.bellsouth.net>,   
   > apparently there are practical advantages in having a   
   > single filled aperture rather than a wide scattering of smaller mirrors.   
      
   I suspect that apodisation is very much easier with the filled aperture.   
      
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