The Bahtinov mask is one of the basic pieces of equipment for every astrophotography lover. This extremely simple, yet precise device allows for perfect focusing, which is not always possible using only digital techniques (EAF, FocusMax, Robofocus etc.).

William Optics' patented product is a high-quality mask that can be used with the William Optics GT71, Zenithstar 73 and Star 71II telescopes.

William Optics Bahtinov Mask Highlights (WO 70)

• compatible with William Optics telescopes
• precise workmanship guaranteeing a sharp image
• screwed metal plug

Technical parameters

• mounting on the telescope: slip-on
• mounting the mask in the frame: three screws
• compatible telescopes: William Optics GT71, Zenithstar 73, Star 71II
• end cap: metal, screwed
• colour: gold

Set elements

• William Optics mask (WO 70)

Guarantee

24 months