New-generation hexabundles: development and initial results

Rebecca Brown; Adeline H. Wang; Julia J. Bryant; Sergio Leon-Saval

doi:10.1117/12.2313033

10 July 2018 New-generation hexabundles: development and initial results

Rebecca Brown, Adeline H. Wang, Julia J. Bryant, Sergio Leon-Saval

Proceedings Volume 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III; 1070663 (2018) https://doi.org/10.1117/12.2313033
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

The original optical fibre imaging bundles called `hexabundles' have proven to be exceptionally effective in the Sydney-AAO Multi-object IFS (SAMI) instrument, enabling one of the worlds largest IFS galaxy surveys^{5, 6}. We are now developing an improved next-generation hexabundle design. These IFUs use a novel assembly technique developed in the Sydney Astrophotonic Instrumentation Laboratories (SAIL) at the University of Sydney, that enable very high fill-fraction and an evenly distributed, hexagonally packed, array of 217 fibre cores. These new hexabundles will see first light in 2019 on the new Hector-I instrument for the Anglo-Australian Telescope (AAT). The large number of fibre cores will measure spatially-resolved spectroscopy of galaxies out to 2 effective radii. The hexabundles are currently being prototyped, and characterised. The impact of the hexagonal packing of the fibre cores on Focal Ratio Degradation (FRD), total throughput of the device and overall performance will be presented.

Citation Download Citation

Rebecca Brown, Adeline H. Wang, Julia J. Bryant, and Sergio Leon-Saval "New-generation hexabundles: development and initial results", Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 1070663 (10 July 2018); https://doi.org/10.1117/12.2313033

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KEYWORDS

Galactic astronomy

Spectrographs

Optical fibers

Prototyping

Cladding

Light

Calibration

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