William Optics Bahtinov Mask Cover (Gold) for WO GT81 Telescope

$113.00
Article number: CPBM-81GD
Availability: More on the Way to us
Delivery time: More on the Way to Us

Bahtinov Mask and Cover for William Optics 81 Series Telescopes (includes GT81 and ZS81).

Available only in Gold

The new 81mm telescopes now come with this mask. But if you purchased this scope some time ago and do not have this mask, then you can buy it separately now.

William Optics' Diffraction Spikes is an ultra high optical transmission Bahtinov mask which produces the clearest, brightest and longest diffraction spikes facilitating focusing with ease and accuracy.

  • Optical transmission: 92% and above (about 3 times brighter than traditional metal masks)
  • Made with optical grade PMMA acrylic material
  • ID = 108mm (4.25")
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