I am selling my lightly used William Optics WE-FLAT2 Field Flattener/Focal Reducer (.8x). This is designed for 66-90mm refractor telescopes, and I no longer have my 80mm scope...thus I can't use this anymore. It has SCT threads on one end for a t-adaptor. It's in great shape - no scratches, etc. Comes in original box. Worked great on my W.O. Zenithstar scope a few years ago. I thought it would work on my ES127mm, but unfortunately its not designed for that focal length. I found the following info on Optics Planet web site:Specifications of William Optics 2" APO Apochromatic Field Flattener and 0.8x Focal Reducer for 66mm to 90mm Refractors WE-FLAT-2:High-quality FMCLens-to-chip suggested distance: 56mmReducing factor 0.8xRotating T-ring adapterSCT thread, AND 2" nosepieceWeight : 210g Features of William Optics 2" APO Apochromatic Field Flattener and 0.8x Focal Reducer for 66mm to 90mm Refractors WE-FLAT-2:This very elegant 2” reducer/field flattener has been designed for optimal results with the 66mm series of telescopes, although it is functional also with other 80 or 90mm refractors. The SCT thread, on one side allows easy usage on the ZenithStar 66 mm telescopes. A 2" nose piece is provided together in the package for use with refractors without SCT-style rear cell. Finally a reasonably priced reducer/field flattener for the most popular series of small refractors!APS size• Designed with APS chip-size DSLR cameras in mind.• FMC doublet design.• Produced entirely with the best Ohara optical glasses.• It will flatten the field amazingly well and and finally make you see those stars round! Differently from other brands' refractors, this flattener works amazingly well with the 66mm popular refractors.Superb Finish• William Optics polished anodized finish.• All internal surfaces threaded and blackened for no reflections.• Rotating T-ring thread for any 35mm camera. The T-ring adapter is provided with a lock screw and extra lock retaining screws.• Will accept any standard T-ring for your camera.
Filed under: Eyepieces & Accessories