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Re: [ATM] Help in moving my secondary

I don't understand why you would need to move the secondary... If you did that, the center of the optical axis would move away from the center of the focuser (if you mount the new focuser in the same location as the old one). Instead, think about moving the mirror up the tube (or cut the struts) instead.
   
  Ken Hunter
  

RP Sutton <rp@suttonsonline.us> wrote:
  Hello Everyone -

I would like to upgrade my focuser, but to do that i will need to move my 
secondary 1" closer to the primary. MY scope is a 10" f/7 and has a 1.53 " 
secondary. I measured the distance from the center dot of the primary to the 
center dot of the secondary and it is approx 61" +/- 1/4". My question is this - 
will I be messing up anything in the light path by moving the secondary 1" 
closer? will the light cone overflow the secondary if it is 1" closer to the 
primary? I do not know much about these things and am using terminology I have 
gleaned from reading this list so I hope and am stating things correctly.

Thanks for your help -

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