William Optics Bahtinov Focusing Mask Cap for WO 70 Series Telescopes - Blue
This item is discontinued by the manufacturer and is no longer available.
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Bahtinov Mask and Cover for William Optics 70 series telescopes only (includes GT71, Star71-II, and Z73)
Available in three colors (Red, Gold or Blue; each sold separately). The new 70 series 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
Other Information
- Country of Manufacture: Taiwan
Bahtinov Mask and Cover for William Optics 70 series telescopes only (includes GT71, Star71-II, and Z73)
Available in three colors (Red, Gold or Blue; each sold separately). The new 70 series 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
Bahtinov Mask and Cover for William Optics 70 series telescopes only (includes GT71, Star71-II, and Z73)
Available in three colors (Red, Gold or Blue; each sold separately). The new 70 series 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
Other Information
- Country of Manufacture: Taiwan