Focal ratio degradation in optical fibres for the Hector integral field units

被引：3
|
作者：
Wang, Adeline Haobing [1 ,2 ,3 ]
Brown, Rebecca [1 ,2 ,3 ,4 ]
Bryant, Julia J. [1 ,2 ,3 ]
Leon-Saval, Sergio [1 ,3 ]
机构：
[1] Univ Sydney, Sch Phys, Astralis USyd, SIfA, Sydney, NSW 2006, Australia
[2] Macquarie Univ, Fac Sci & Engn, Australian Astron Observ, Macquarie Pk, NSW 2109, Australia
[3] ARC Ctr Excellence All Sky Astrophys 3 Dimens ASTR, Stromlo, ACT, Australia
[4] Astralis AAO, AAO, Fac Sci & Engn, N Ryde, NSW, Australia
来源：
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2023年 / 522卷 / 03期
基金：
澳大利亚研究理事会;
关键词：
instrumentation: detectors; techniques: imaging spectroscopy; techniques: miscellaneous;
D O I：
10.1093/mnras/stad1273
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Focal Ratio Degradation (FRD) in optical fibres can result in light loss. In astronomical instrumentation, FRD must be controlled because light levels are low. A new Integral Field Spectrograph (IFS) instrument called Hector, was recently completed and was installed on the Anglo-Australian Telescope (AAT) in Australia in 2021 December. The integral field units (IFUs) for Hector made with hexagonally packed multi-mode fibres are called hexabundles. In this paper, we introduce a cone-beam measurement method to measure FRD at optical wavelengths. We present the FRD and throughput performance of the hexabundles for Hector and show that the process for making hexabundles introduced no additional significant FRD beyond that of the bare fibre.
引用
收藏
页码：4310 / 4322
页数：13
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