Svbony SV193 2-Inch 0.8x Focal Reducer / Flattener for 80 ED Refractor. svbony sv305m 10-year guarantee thanks to our

10-year guarantee thanks to our outstanding coating technique

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1x Raised finder stalk to clear the tube rings and dewshield

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Svbony SV193 2-Inch 0.8x Focal Reducer / Flattener for 80 ED Refractor. svbony sv305m 10-year guarantee thanks to ourDesigned for fixed field astrophotography with the SV503 refractor. While the SV193 will also thread into many other f 6f 7 refractors using 2" focusers, performance cannot be guaranteed on all optical systems. The 0. 8 reducer provides a wider field, finer star points and an improved signal to noise ratio under the same exposure time. In addition to reducing the focal length for faster imaging, the integrated field flattener corrects the natural