William Optics Red Bahtinov Mask Cover For WO 70 Series Telescopes - CPBM-71RD 115 mm Refractors These two separated lenses improve

These two separated lenses improve star dot quality as well as correct for aberration

Tracking Rates: Sidereal

About the TeleVue Eyepiece Barrel Extender - 2"

M43 and M54 (these are covered by the removable rubber eyecups)

William Optics Red Bahtinov Mask Cover For WO 70 Series Telescopes - CPBM-71RD 115 mm Refractors These two separated lenses improveWilliam Optics Red Bahtinov Mask Cover For WO 70 Series Telescopes William Optics Bahtinov Focusing Mask and Dust Cap Innovative Design combines Dust Cover and a Bahtinov Mask in one Fits WO 70 Series Telescopes Clear Acrylic Sheet design provides 92% light transmission Gives the Brightest diffraction spikes to assist focusing This is a William Optics Red Bahtinov Focusing Mask and Dust Cap, made from Acrylic material, which is high in light