OVL Optical Vision Field Flattener | Eyepiece Accessories & Filters

The Sky-Watcher Field Flattener Is A Superb Quality, Non-Focal Reducing Field Flattener Optimised For Dslr Imaging On Refractor Telescopes With Focal Ratios Of Between F/5.5 To F6.0. Will Also Provide Much Improved Results On Refractors With Focal Lengths Narrowly Outside This Optimised F/Range. Integral T-Ring Adaptor Thread. High Quality Cnc Machined Body With Gloss Black Anodised Finish.