William Optics Red Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes - CPBM-102RD Founder Alien Eyepieces and easy to carry on

and easy to carry on their own or in the included carry bag

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Aperture: 60mm (2

perfect for those observations when you want to see greater details of resolved objects

William Optics Red Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes - CPBM-102RD Founder Alien Eyepieces and easy to carry onWilliam Optics Red Bahtinov Mask Cover For WO GT102 and Z103 Telescopes William Optics Bahtinov Focusing Mask and Cover Innovative Design combines Dust Cover and a Bahtinov Mask in one Fits WO GT102 and Z103 Telescopes Clear Acrylic Sheet design provides 92% light transmission Gives the Brightest diffraction spikes for focusing This is a William Optics Bahtinov Focusing Mask Cover made from Acrylic material, which is high in light transmission. This