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I am after a 4mm eyepiece. These are the options available from Andrews (or the 3 or $99 deal mentioned below)
4mm Andrews Series 500 1.25" Plossl $39
4mm Guan Sheng 1.25" Plossl $39
3.8mm ED (Extra Low Dispersion) 1.25" $99
I would like to step up to around 300x magnification. Which do you recommend?
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