Celestron RACI Illuminated 9x50 Finderscope

The RACI Illuminated 9x50 Finderscope from Celestron is specially designed telescope accessory for comfortable and intuitive use with Schmidt-Cassegrain optical tubes. This Right Angle Corrected Image (RACI) device makes it easier for an observer to locate a celestial body through the finderscope when the optical tube is pointed toward zenith. The RACI corrects its transmitted image so the field of view always appears upright, which enables more intuitive telescope adjustments.