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Explore Scientific 3X Barlow for 1.25" eyepieces
$209.99This new four-element 1.25" 3x Explore Scientific focal extender (Barlow lens) triples the power of any eyepiece used with it, with flat-field and essentially apochromatic performance . . . -
Explore Scientific 2" 3x Focal Extender (Barlow)
$299.99Increase your eyepiece magnification by 3x
2" barrel diameter
Keeps eyerelief consistent