0.85x Focal Reducer/Corrector
Designed for serious Astro-Imagers and optimized for the Saxon / Sky-Watcher / Synta ED100. This is a superb quality accessory which effectively reduces the telescope's focal length by a factor of 0.85x and provides much improved field-edge correction.
Reduces the Focal ratio of our saxon 100 ED Refractor Telescope from F/9.0 to F/7.65. Also provides field-correction for astrophotography.
Has M48 output thread so required M48 size T-ring adaptor for DSLR's or the ProStar adaptor ring shown under the options button.