Diffraction Spikes Bahtinov Focusing Mask for Telescopes Dew Shield Diameter From 172mm -235mm

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Your Price: $89.99
Diffraction Spikes Bahtinov Focusing Mask for Telescopes Dew Shield Diameter From 172mm -235mm
Part Number: BM-DS-GR90
Availability: In Stock

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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.

For dewshields 75 - 110mm in diameter

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