Astrozap Full Aperture Focusing Screen
$38.28
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Astrozap Focusing Screen Lightweight aluminum focusing screen with adjustable grommets. Sizes fit telescopes with outside diameters of: 2-1/2"-5-1/2" (63mm-139mm) 5-1/2"-8-1/2"(139mm-216mm) 8-1/2"-11-1/2"(216mm-292mm) 11-1/2"-14-1/2"(292mm-368mm) 14-1/2"-17-1/2"(368mm-444mm) Thin design allows for optimal performance.
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