A new adaptive secondary mirror for astronomy on the University of Hawaii 2.2-meter Telescope
conference paper
We are developing a new adaptive secondary mirror (ASM) for the University of Hawaii 2.2-meter telescope based on a novel and very efficient hybrid variable reluctance actuator developed by TNO. The actuator technology has broad implications on the ASM design and results in an ASM with a thicker facesheet, lower power dissipation, and simple controls. We report here preparations and plans for lab testing as well as on-sky demonstration of the ASM. The lab calibrations of the ASM influence functions will use a phase measuring deflectometry setup. The on-sky tests will include the evaluation of the use of the ASM for narrow field AO observations at visible through near infrared wavelengths, for very wide fields of view ground-layer adaptive optics, and for seeing limited non-adaptive optics observations.
Topics
TNO Identifier
955445
ISSN
0277-786X
Publisher
SPIE
Source title
Adaptive Optics Systems VII, Proceedings of SPIE, SPIE Astronomical Telescopes + Instrumentation, 13 December 2020, Online Only
Editor(s)
Schreiber, L.
Schmidt, D.
Vernet, E.
Schmidt, D.
Vernet, E.
Collation
9 p.
Place of publication
Bellingham, WA, USA
Files
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