William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm - BM-DS-GR90 vendor-askar This TeleGizmos Truss Tube Dob

This TeleGizmos Truss Tube Dob Cover is designed to fit a 24"- 25" f/5 Truss Tube Dobsonian Scope in a low park position

TE-14WD and TE-17HD eyepieces

25" (threaded) eyepieces or other accessories

4" (with 2-inch diagonal) Weight OTA/Std

William Optics Diffraction Spikes Bahtinov Focusing Mask - For Dew Shield 172 mm to 235 mm - BM-DS-GR90 vendor-askar This TeleGizmos Truss Tube DobWilliam Optics Diffraction Spikes Bahtinov Focusing Mask For Dew Shield 172 mm to 235 mm William Optics Diffraction Spikes Bahtinov Focusing Mask Fits dew shields with diameters of 172 mm to 235 mm Clear Acrylic Sheet design provides 92% light transmission Gives the Brightest diffraction spikes for focusing This is a William Optics Diffraction Spikes Bahtinov Focusing Mask made from Acrylic material, which is high in light transmission. This design