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    Anyone try high magnification in their 65mm

    Hello Dd61999, Welcome to Birdforum! I have a Pentax PF-65EDaII and occasionally use it with a Pentax XW 3.5mm eyepiece that normally serves for astronomical viewing with other telescopes. The combination gives 111x, a .63˚ true field of view, and an exit pupil of about .6mm. While images at...
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