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think that 2x is ideal for your scope Glen. TV is really good quality. For small field of view, field curvature will not matter much and a Barlow will be as good as a Powermate.
FWIW, I have both a 2x big Barlow (TV) and a GSO 2x 2" - both appear to be effectively the same for image quality, but the TV AR coatings seem to be a little bit better.
Last edited by Shiraz; 30-04-2017 at 06:15 PM.
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