BAADER HYPERION FINETUNING RING 28mm

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The Baader 28mm Hyperion Finetuning Ring is a spacer ring for Baader Hyperion eyepieces that fits between the negative lens and 2" barrel. It allows you to vary the focal length of the eyepiece with no loss of quality. See the below table for specifications: Specifications Optical length 28 mm Clear aperture 45 mm Outer diameter 50.8 mm (2") Connection telescope side M48 x 0.75 female Connection camera side M48 x 0.75 female Weight 30 g SKU BA2958228 Show more