From: mikko.syrjalahti@nospam.fi   
      
   adamstrange8w7@gmail.com writes:   
      
   > On Wednesday, December 18, 2019 at 1:20:05 PM UTC-5, Phil Hobbs wrote:   
      
   >> That gets to be a very big number pretty fast.  The down side is that   
   >> you have to keep the system properly aligned, which introduces some   
   >> mechanical complications.   
   >>   
   >> Cheers   
   >>   
   >> Phil Hobbs   
   >>   
   >> --   
   >> Dr Philip C D Hobbs   
      
   > Well, this is absolutely brilliant and is exactly what I needed.   
   >   
   > Many thanks, Phil.  I appreciate your help.   
      
   When building something like that, you should absolutely have and read   
   a book called  'Building Electro-Optical Systems: Making It all Work'.   
      
   The author of the book is known to be very helpful and modest person.   
      
   --   
   mikko   
      
   --- SoupGate-Win32 v1.05   
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