Echidna Mark II: One giant leap for 'tilting spine' fibre positioning technology

Date

2016

Authors

Gilbert, James
Dalton, Gavin

Journal Title

Journal ISSN

Volume Title

Publisher

SPIE - The International Society for Optical Engineering

Abstract

The Australian Astronomical Observatory's 'tilting spine' fibre positioning technology has been redeveloped to provide superior performance in a smaller package. The new design offers demonstrated closed-loop positioning errors of <2.8 μm RMS in only five moves (~10 s excluding metrology overheads) and an improved capacity for open-loop tracking during observations. Tilt-induced throughput losses have been halved by lengthening spines while maintaining excellent accuracy. New low-voltage multilayer piezo actuator technology has reduced a spine's peak drive amplitude from ~150V to <10V, simplifying the control electronics design, reducing the system's overall size, and improving modularity. Every spine is now a truly independent unit with a dedicated drive circuit and no restrictions on the timing or direction of fibre motion. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.

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Citation

Source

Proceedings of SPIE - The International Society for Optical Engineering

Type

Conference paper

Book Title

Entity type

Access Statement

Open Access

License Rights

DOI

10.1117/12.2231366

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