Bahtinov Focusing Mask for Telescopes Dew Shield
$49.00
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Please contact Cloud Break Optics to order this product Description Diffraction Spikes Bahtinov Focusing Mask for Telescopes Dew Shield Diameter From 75mm -110mm The new Optical acrylic sheet offers 92% of light transmission that gave you the highest and brightest diffraction Spikes for Focusing ! It’s about 3 times brighter than traditional metal type.
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