2" Dielectric Star Diagonal (D1028ECF)

Description This diagonal uses a thick, over-sized mirror polished to 1/10th wave. The mirror has a protective, dielectric coating with 99% reflectivity. The body has carbon fiber sides. It has a collet type twist lock on the 2" eyepiece tube and the deluxe 1.25" compression ring adapter is included. Both the two inch insert tube and adapter have filter threads. These diagonals are double tested at Stellarvue for perfect alignment and performance.  Star diagonals are a critical component of any refractor.  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 the exceptional quality of your Stellarvue telescope. The D1028 uses a twist lock collet. Rotate the twist lock lever counter-clockwise to open. Insert the 1.25” adapter or 2” eyepiece and then rotate the lever clockwise to tighten. The two inch insert tube has filter threads