From: "Phyzzx" 
To: "atm" 
Reply-To: "Phyzzx" 


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Hello all,

I am just about finished with my 10" dob, and now it's time to select
a = secondary mirror.  What size should I purchase?  Is there a formula I =
should follow to determine the size of the secondary?  Let me know all! =
Thanks in advance for your assistance, Jon

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Hello all,
 
I am just about finished with
my 10" =
dob, and now=20
it's time to select a secondary mirror.  What size should I =
purchase? =20
Is there a formula I should follow to determine the size of the =
secondary? =20
Let me know all! Thanks in advance for your assistance,=20
Jon

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