130m Hartmann Mask for 130eq
This is the first draft of a Hartmann mask (https://en.wikipedia.org/wiki/Hartmann_mask) used to focus telescopes. It's made to fit a Celestron 130eq telescope, but may work for any 130mm Newtonian telescope.
This is the first draft of a Hartmann mask (https://en.wikipedia.org/wiki/Hartmann_mask) used to focus telescopes. It's made to fit a Celestron 130eq telescope, but may work for any 130mm Newtonian telescope.