[ATM] F -numbers for mirrors.. Parobala or sphere?

["Russell Jocoy" <russjocoy@hotmail.com>]

    To all,

              I would suggest an F-20, collamation should ony take a few 
hours with a 1/2"
diagonal. And besides three strokes with 80 grit, 5 strokes with 120, and 
polish for five minutes...
bingo.... instant tunnel vision.   Good luck with your view finder.......(oh 
please parobolize
with a very good microscope attached to your focault computer..)  this is a 
pun..Richard would not
tell you this... grind on... find your F-number and go for it .. F- everyone 
else's numbers
     Russ Jocoy  (look through the glass it will tell more tales than you 
know)
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