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Planetary Observing with 5mm Eyepieces: Pentax 5mm XO; Baader 5mm Orthoscopic; University Optics 5mm Abbe Orthoscopic and 4.8mm Super Abbe Orthoscopic
Asahi Pentax 67 | Just FYI, Nikon F100 eyepiece accessories fit perfectly on the prism for the Pentax 67 as they share the same thread | Facebook
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Comparing Five Planetary Eyepieces(2.5mm- 4.8mm): Skywatcher, Pentax XW, TMB And Orthoscopic - YouTube
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The Pentax 5mm XO: A Planetary Weapon of Choice - Eyepieces (3mm - 13mm) - Articles - Articles - Cloudy Nights
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Planetary Observing with 5mm Eyepieces: Pentax 5mm XO; Baader 5mm Orthoscopic; University Optics 5mm Abbe Orthoscopic and 4.8mm Super Abbe Orthoscopic
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