Used SmartAstronomy 2" Dielectric Diagonal USED and other optical imperfections—but their

and other optical imperfections—but their accuracy depends entirely on matching your current imaging setup

we now introduce the ASI294MM Pro

Unlike more traditional refractors

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

Used SmartAstronomy 2" Dielectric Diagonal USED and other optical imperfections—but theirThis 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%