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Old 14-11-2013, 05:26 PM
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kinetic (Steve)
ATMer and Saganist

kinetic is offline
Join Date: Jun 2008
Location: Adelaide S.A.
Posts: 2,261
Originally Posted by Merlin66 View Post
No, not really.
It comes down to the eyepiece design....
(I have a VERY old Ziess Monocentric which is 0.9" - it's worked well for the past twenty years)

my vintage 0.965" 9mm, 6mm and 4mm Orthos work absolutely fine in
my shorter FL 12" Newt(F4.5)
Ideally they were for the longer FL (F6-F7) type Newt but work fine , purely because they are just classy, well made Jap eyepieces from a bygone era.

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