DURA-BRIGHT 2" DIELECTRIC 90° DIAGONAL OFF-AXIS GUIDER frequently used in many focal

frequently used in many focal reducers

it has absolute encoders on both axes for the best accuracy and it will change forever your way of thinking about astronomical observations

This accessory replaces the original SkyWatcher HEQ5 saddle that only accommodates Vixen bars

a telescope with a 160mm front should use model FC170

DURA-BRIGHT 2" DIELECTRIC 90° DIAGONAL OFF-AXIS GUIDER frequently used in many focalThe William Optics Dura Bright 2" diagonal is a high quality 90 mirror type star diagonal with dielectric coatings for 99% reflectivity, giving ultra high contrast and resolution for planetary, lunar and binary star observation. The high precision 12mm thick mirror substrate is polished to 1 12th lambda accuracy for optimal image quality. Meticulously CNC machined with internal anti reflection baffling and carbon fibre side plates, the Dura Bright 2"