[ATM] Baffling Wynne corrector

[Polaraligned <polaraligned@optonline.net>]

I would like to use this Wynne corrector with a 25" f/5 Galaxy mirror I 
have.
http://www.astrooptik.com/   Click on Newton Wynne 3" corrector to see
data on it.

Problem is that the focal plane of the mirror needs to be set 43mm beyond
the last lens in the corrector.  The corrector is 142mm long.
This means I need to size and place the secondary so the primary mirror
focal plane is 185mm  (7.25") outside of the secondary cage.  This distance
makes the first lens of the corrector right at the inside edge of the 
secondary
cage.  I plan on using a Berry/Kreige style secondary cage.
Big question is how much baffling does the first lens of this corrector 
need?
The owner of Astro Optik says that baffling is unnecessary.  That statement
I do not understand.  Will not contrast be decreased?  How about when I am
imaging with a moon in the sky?
So how do I solve this.  My thoughts are to move the corrector further out 
of
the secondary cage which would require quite a larger diagonal.  Phillip
Keller says not to move it out.
Confused.

Scott


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