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Re: [ATM] Mirror Tester

Hello Mahmood...!!!
   
  How are things progressing there in Pakistan? Looks like you are getting along if  you are building your tester.
   
  The correction of the mirror is almost exactly equal to the saggitta of the mirror so if you have less than 10 mm of sag, your dial indicator will be ok. It might be a bit tricky to set up if your sag is close to 10mm but thats all the trouble you'll have and why a bit more travel is desirable.
   
  Please let us know about your progress so far and of any things you've discovered from your point of view.
   
  Ken Hunter
   
  

Mahmood Hassan <emhl95@yahoo.com> wrote:
  Hello,
ATM List members,

I am constructing my mirror tester (Foucault+Ronchi), and I have a dial gauge which has a total travel of 10 mm. Will it be sufficient for testing 6 inch F/9 mirror.

Regards,

Mahmood


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