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Paul,
news to me as well, but then again I'm not a big SCT sorta guy.
I use the barlow only if I can (in the Mewlon for example).
If there is a significant distance (as there will be with a diagonal) after the barlow then the stated amplification will not apply. It will be greater.
I understand there is a reference to this on the Televue site, specifically in regards to the Powermates.
Gary
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