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Pentax 3.5mm 1.25" 70° XW Eyepiece. The Ultimate Companion for Telescopes and Spotting Scopes : Electronics - Amazon.com
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9mm Nagler T1, 10.5mm Pentax XL, and 10mm Radian. So which premium eyepiece is REALLY best? - Eyepieces (3mm - 13mm) - Articles - Articles - Cloudy Nights
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