Diffraction Spikes Bahtinov Focusing Mask for Telescopes Dew Shield Diameter From 105mm -148mm

On sale $60.00 $50.00
Part Number: BM-DS-GR55
Availability: In Stock
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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