Manufacturing and integration status of the UH2.2 adaptive secondary mirror

Wouter Jonker; Stefan Kuiper; Fred Kamphues; Arjo Bos; Bert Dekker; Mark Chun; André Benschop; Hans Priem; Bert Monna; Manav Nair; Taavishe Gupta; Gilles Ackaert; Suman Bola; Loannis Varvaringos; Julian Schroth

doi:10.1117/12.2629254

29 August 2022 Manufacturing and integration status of the UH2.2 adaptive secondary mirror

Wouter Jonker, Stefan Kuiper, Fred Kamphues, Arjo Bos, Bert Dekker, Mark Chun, André Benschop, Hans Priem, Bert Monna, Manav Nair, Taavishe Gupta, Gilles Ackaert, Suman Bola, Loannis Varvaringos, Julian Schroth

Author Affiliations +

Proceedings Volume 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V; 1218816 (2022) https://doi.org/10.1117/12.2629254
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Abstract

A consortium of industrial and academic partners, coordinated by TNO, is working on the realization of a 620mm adaptive secondary mirror (ASM) for the University of Hawaii’s 2.2-meter telescope [1][2][3]. The ASM consists of a 620mm-diameter slumped convex aspherical mirror shell, manipulated by 210 variable-reluctance actuators mounted on a light-weighted support frame. The mirror shell is manufactured to the required accuracy at low cost through slumping. The actuators are driven by dedicated PWM current drivers and commanded through a real-time FPGA-based interface. After successful performance testing of several laboratory prototypes[4], this project will provide the definitive on-sky demonstration of this new technology. We report on the manufacturing and testing of the major subsystems, and on the integration status of the ASM as a whole.

Conference Presentation

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Wouter Jonker, Stefan Kuiper, Fred Kamphues, Arjo Bos, Bert Dekker, Mark Chun, André Benschop, Hans Priem, Bert Monna, Manav Nair, Taavishe Gupta, Gilles Ackaert, Suman Bola, Loannis Varvaringos, and Julian Schroth "Manufacturing and integration status of the UH2.2 adaptive secondary mirror", Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 1218816 (29 August 2022); https://doi.org/10.1117/12.2629254

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