Manufacturing and testing of the large lenses for the SDSS-V wide field corrector

Matthieu Gilles; Cédric Cammarata; Hélène Ducollet; Denis Fappani; Céline Lopez; Sylvain Perrin; Christian du Jeu; Bruno Delaborde; Patrick Robert; Julien Fourez; Stephen Smee; Robert Barkhouser; Aidan Gray

doi:10.1117/12.2627242

29 August 2022 Manufacturing and testing of the large lenses for the SDSS-V wide field corrector

Matthieu Gilles, Cédric Cammarata, Hélène Ducollet, Denis Fappani, Céline Lopez, Sylvain Perrin, Christian du Jeu, Bruno Delaborde, Patrick Robert, Julien Fourez, Stephen Smee, Robert Barkhouser, Aidan Gray

Author Affiliations +

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 121880M (2022) https://doi.org/10.1117/12.2627242
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

After a brief introduction of the SDSS-V optical instrumentation installed at the Apache Point 2.5m telescope, the presentation will be mainly focused onto the optical production and testing of the 3 large lenses (diameter 700-800mm) constituting the wide field optical corrector (WFC). Special emphasis will be made onto the measurement issues and solutions of the deep aspherical surfaces as well as the review of the specific anti-reflection (AR) coating with development of a dual band anti-reflective coating, carried out by Thales SESO-France. Before concluding, a dedicated paragraph will address on-sky imaging performances results with this new WFC. The presentation will conclude by a brief overview of the corresponding existing “state of the art” at Thales SESO for future manufacturing of similar or large optics for next generation of very wide field corrector.

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Matthieu Gilles, Cédric Cammarata, Hélène Ducollet, Denis Fappani, Céline Lopez, Sylvain Perrin, Christian du Jeu, Bruno Delaborde, Patrick Robert, Julien Fourez, Stephen Smee, Robert Barkhouser, and Aidan Gray "Manufacturing and testing of the large lenses for the SDSS-V wide field corrector", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 121880M (29 August 2022); https://doi.org/10.1117/12.2627242

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