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Title: Manufacturing and integration status of the UH2.2 Adaptive Secondary Mirror
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. 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, 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.  more » « less
Award ID(s):
Author(s) / Creator(s):
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Geyl, Roland; Navarro, Ramón
Date Published:
Journal Name:
Proc. SPIE 12188, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V
Page Range / eLocation ID:
Medium: X
Sponsoring Org:
National Science Foundation
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