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Development of the single-mode fiber integral field unit for the RHEA Spectrograph
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Paper Abstract

RHEA is a single-mode ´echelle spectrograph designed to be a replicable and cost effective method of undertaking precision radial velocity measurements. The instrument has a novel fiber feed with an integral field unit injecting into a grid of single-mode fibers reformatted to form a pseudo-slit, increasing throughput and enabling highspatial resolution observations when operating behind Subaru and the SCExAO adaptive optics system. The past 18 months have seen a replacement cable constructed for the instrument to address modal noise caused by closely packed fibers with similar path lengths. Here we detail the cable fabrication procedure, design improvements, increased precision in meeting the required sub-micron optical tolerances, throughput gains, and known remaining issues.

Paper Details

Date Published: 6 July 2018
PDF: 11 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107025J (6 July 2018); doi: 10.1117/12.2314336
Show Author Affiliations
Adam D. Rains, The Australian National Univ. (Australia)
Michael J. Ireland, The Australian National Univ. (Australia)
Nemanja Jovanovic, Caltech Optical Observatory, California Institute of Technology (United States)
Joao Bento, The Australian National Univ. (Australia)
Tobias Feger, Macquarie Univ. (Australia)
Julien Lozi, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Christian Schwab, Macquarie Univ. (Australia)
Australian Astronomical Observatory (Australia)
David W. Coutts, Macquarie Univ. (Australia)
Olivier Guyon, Subaru Telescope, National Astronomical Observatory of Japan (United States)
Steward Observatory and College of Optical Sciences, Univ. of Arizona (United States)
Astrobiology Ctr. of NINS (Japan)
Alexander Arriola, Macquarie Univ. (Australia)
Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Simon Gross, Macquarie Univ. (Australia)
Ctr. for Ultrahigh bandwidth Devices for Optical Systems (Australia)
Jonathan E. Harris, Univ. of Bath (United Kingdom)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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