Title
Manufacturing and integration status of the UH2.2 Adaptive Secondary Mirror
Author
Jonker, W.A.
Kuiper, S.
Kamphues, F.G.
Bos, A.
Dekker, A.
Chun, M.
Benschop, A.
Priem, H.
Monna, B.
Nair, M.
Gupta, T.
Ackaert, G.
Bola, S.
Varvaringos, I.
Schroth, J.
Publication year
2022
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. 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.
Subject
Reluctance actuator
Adaptive mirror
UH88
UH2.2
ASM
Space & Scientific Instrumentation
Industrial Innovation
To reference this document use:
http://resolver.tudelft.nl/uuid:fe8b3cd1-c05d-4451-b7ff-bb2115cfe018
TNO identifier
980019
Publisher
SPIE
Source
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation V, 29 August 2022, Montréal, QC, Canada, 1218816 (1218816)
Document type
conference paper