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Diffraction Spikes Bahtinov Focusing Mask for Telescopes Dew Shield Diameter 243-308mm

SKU : WO-BM-DS-GR150

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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

Product Details

  • 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.


  • specifications

    Free ShippingYes
  • included items

    • Bahtinov Focusing Mask

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