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[ATM] F/10 or F/8?



Can anyone tell me if there would be any advantage in making a mirror
in an F/10 vs. a F/8?  Seems like everything is a an F8.  This will be
for a 6" mirror for primary use in a planetary scope.  My thinking is
that with the longer focal length it will help with higher
magnification for planetary viewing and may be a little more forgiving
for a "first" mirror.  I also wear glasses and understand that you can
use longer focus eyepieces with the longer F/R.
Since this will be my first, I need all the help I can get.  Not, that
I intend to do a poor job.  I just don't want to make this more
difficult than it has to be.


-- 
Curtis
Nampa, Idaho
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