SLR Lens eyepiece adapter (Pentax-PK)

Description

Https://Youtu.Be/Ppmkm2Yoqcy Convert Your Old Pk Mount Lenses Into A Powerful Telescope. Fits 1.25" (31.7Mm) Eyepieces. The Magnification Should Be The Lens Focal Length Divided By Eyepiece, For Example: A 200Mm Lens With A 4Mm Eyepiece Should Give 200Mm/4Mm = X50 Magnification. Have Fun !

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