Used Stellarvue Dielectric Star Diagonal, 2”

This is a terrific 2" Stellarvue dielectric diagonal, in excellent condition, completely clean, with no marks on the body or optics.  This is an older model, the D1029EDU.  Although the pamphlet specifically states that this is a dielectric diagonal, it does state that it is 99% reflective, and it also may not be made to the same 1/10th wave standards of newer Stellarvue diagonals.  We have included a non-Stellarvue 2" to 1.25" adapter.  Both the diagonal and the adapter have brass compression rings so as not to mar your eyepieces.          Description This diagonal uses a thick, over-sized mirror with protective, dielectric coating.  These diagonals are double tested at Stellarvue for perfect alignment and performance. Star diagonals are a critical component of any telescope. The performance of an otherwise excellent telescope can be seriously compromised using a diagonal that is misaligned or pinched. Each diagonal and erecting prism we sell is tested for alignment and will preserve