Manufacturing thin shell mirrors for adaptive optics

Bart Snijders; Nagihan Sezgin; Fred Kampheus; Stefan Kuiper; Arjo Bos; Jan De Vreugd; Wouter Jonker; Mark Chun; Philip Hinz; Bert Dekker; Douwe Jan IJlst; Bart van Venrooy; Wendy de Kleijn; Robin van Buuren; Matias Kidron; Esperanza Vielba Salcedo; Glenn van Zalen; Stefan Zaal; Constantin Meiners; Rik ter Horst

doi:10.1117/12.3005019

6 October 2023 Manufacturing thin shell mirrors for adaptive optics

Bart Snijders, Nagihan Sezgin, Fred Kampheus, Stefan Kuiper, Arjo Bos, Jan De Vreugd, Wouter Jonker, Mark Chun, Philip Hinz, Bert Dekker, Douwe Jan IJlst, Bart van Venrooy, Wendy de Kleijn, Robin van Buuren, Matias Kidron, Esperanza Vielba Salcedo, Glenn van Zalen, Stefan Zaal, Constantin Meiners, Rik ter Horst

Author Affiliations +

Proceedings Volume PC12677, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV; PC126770N (2023) https://doi.org/10.1117/12.3005019
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Conference Poster

Abstract

This study presents the steps of manufacturing of thin shell mirrors for adaptive optics. TNO, in cooperation with the University of Hawaii Institute for Astrophysics, UC Santa Cruz, Fraunhofer IPT, NOVA and Huygens Optics, have been developing adaptive secondary mirrors (ASM) for the UH 2.2 meter and NASA IRTF telescopes. The ASM shells are slumped convex aspheres, with a 620 and 243 mm diameter respectively. The thin shell mirrors have fast actuators mounted on the backside to correct the wavefront errors caused by atmospheric turbulence. The manufacturing of thin shell mirror is the highlighted part of complete manufacturing steps of ASM for this study. This part includes anti-sticking coating for slumping, slumping, shape correction with grinding/polishing/MRF, and coating of front and backside of the mirror, as well as metrology. The manufacturing of the thin shells is one of the critical technologies for deformable mirrors for adaptive optics.

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Bart Snijders, Nagihan Sezgin, Fred Kampheus, Stefan Kuiper, Arjo Bos, Jan De Vreugd, Wouter Jonker, Mark Chun, Philip Hinz, Bert Dekker, Douwe Jan IJlst, Bart van Venrooy, Wendy de Kleijn, Robin van Buuren, Matias Kidron, Esperanza Vielba Salcedo, Glenn van Zalen, Stefan Zaal, Constantin Meiners, and Rik ter Horst "Manufacturing thin shell mirrors for adaptive optics", Proc. SPIE PC12677, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems IV, PC126770N (6 October 2023); https://doi.org/10.1117/12.3005019

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