William Optics Red Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes - CPBM-102RD Founder Alien Eyepieces Aperture: 60mm (2

Aperture: 60mm (2

Operating System Compatibility:  Mac

This prevents cables from becoming snagged or tangled and unplugged as the RASA is moving

This is the same style telescope John Dobson used when he created his inexpensive and easy-to-build Dobsonian

William Optics Red Bahtinov Mask Cover- For WO GT102 and Z103 Telescopes - CPBM-102RD Founder Alien Eyepieces Aperture: 60mm (2William 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