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if you want 1.5x barlow you can unscrew the bottom lens element of a 1.25" 2x GSO barlow & use that; i routinely use the bottom element of my 2" 2x ED barlow for 1.5x; the 1.25x is interesting -id like to see how much focus you gain, i think with the baader 1.25x unit you nly gain 20-25mm of focus
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