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Updated: Dec 29, 2025

Convergent Polishing: A Simple, Rapid, Full Aperture Polishing Process of High Quality Optical Flats & Spheres
Published on: December 1, 2014
Guoyu Yu1, David Walker1,2,3, Hongyu Li1,4
11National Facility for Ultra Precision Surfaces, OpTIC Centre, University of Huddersfield, St. Asaph Business Park, Ffordd William Morgan, North Wales, St Asaph, LL17 0JD UK.
A novel edge-rectification method addresses residual errors in mirror segment fabrication, improving precision for large optics like the European extremely large telescope (E-ELT). This technique enhances edge quality without affecting the main mirror surface.
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