All ETX telescopes include an internal, flat mirror to reflect light to the telescope's 90-degree astronomical observing position; in this position the telescope's image is right side up, but reversed.
High quality 2" star diagonal. Makes observing at high angles much more comfortable when using Refractor and SCT telescopes. Comes complete with the 2" - 1.25" adaptor so you can use both eyepiece sizes with this diagonal.
A premium dielectric coated diagonal which is small and compact with very high quality machining and a super-hard black anodised chassis. Delivers all the optical and mechanical quality you'd expect from a premium diagonal.
The Altair-EX Dielectric Diagonal is precision CNC machined with an extremely reflective, accurate and smooth mirror surface for maximum image contrast. Recommended to do justice to telescopes with good quality optics.
Available in either 1.25" or 2" sizes the mirrors inside these diagonals have undergone a special high-reflectivity multi-coating process, allowing them to reflect 99% of the precious gathered starlight, providing exceptional brightness and contrast. (Standard diagonals typically reflect 90-95% of light).