Used SmartAstronomy 2" Dielectric Diagonal USED -40° C from ambient maximum

-40° C from ambient maximum Temperature regulation +/-0

By taking individual images with each of these filters and a monochrome astronomy camera and combining the separate images with standard processing techniques

The Askar 91F is an OTA with an aperture of 91mm

You'll see more of those pinpoint star images and more faint detail in deep-sky objects

Unlike more traditional refractors

Used SmartAstronomy 2" Dielectric Diagonal USED -40° C from ambient maximumThis is a used SmartAstronomy 2" dielectric diagonal in excellent condition! The optics are clean and the body is unmarked. This includes one dust cover, but no 1. 25" adapter or a box. Use this Dielectric Diagonal to place your head in a comfortable viewing position when your refractor or catadioptric optical tube assembly (OTA) is aimed at or near the zenith. Built with a dielectric hard coated BK 7 glass mirror, the diagonal transmits more than 99%