About this 3D model

A tri-bahtinov mask with hinges to be foldable and use less space. The Mask is designed for celestron C8 (and tested on a vintage one). I've created 3 versions: - 1 for the C8 with the secondary mirror holder of 66mm of diameter (tested on my vintage C8) (the files with 66) - 1 made starting from measures found on internet of a secondary mirror holder of 71mm (files with 71) - a rigid version.