The file 'Tri-Bahtinov Mask For Celestron C8 Classic 3D Printer Model' is (stl) file type, size is 59.1KB.
Tri-Bahtinov Mask for collimating Celestron C8 SCT classic telescope.Model is printable with Ender 3 in one goMask is attached to secondary mirror holder. Works at least with 1990's classic model.