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Optex 2X Barlow lens 31.7mm Double the magnifying power of the eyepiece. More Info |
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Astronomy filter set for 31.7mm eyepieces More Info |
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Optex Plossl Eyepiece Family 4mm, 6mm, 9mm, 15mm, 25mm, & 40mm. More Info |
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OPP4, OPP6, OPP9, OPP15, OPP25, OPP40 |
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