Two Inch Lumicon Enhanced Aluminum Star Diagonal in very good condition, shows normal wear marks from set screw use.
“The Lumicon Enhanced Aluminum Diagonal reflects 96 to 97 percent of the light from the telescope's primary optics directly into your eyepiece. Its single 1/8 wave precision-polished surface is superior to the three surfaces of prism diagonals. Lumicon collimates each diagonal mirror via a double-pass collimator, ensuring that the light reflected from the diagonal is perfectly perpendicular to the telescope's optical axis. Threaded for use with filters, making eyepiece changing a breeze while using your filter.”
Sells new for $190.00 asking $145.00 priority mail shipping included to the lower 48 states.