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Re: [ATM] Draw Tube Length


Doug Williams <salguod@minbaritm.com> wrote:  As long as all the
eyepieces can focus, is there any optical advantage/disadvantage associated
with draw tube length?



Doug

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  It may be more mechanical than optical but if the light cone is short enough, the longer tube may vignette the light coming from the mirror and you would lose illumination at the edge of the field.
   
  Ken Hunter
  
 

 		
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