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Title:
Performance of a Novel PMMA Polymer Imaging Bundle for Field Acquisition and Wavefront Sensing
Authors:
Richards, S. N.; Leon-Saval, S.; Goodwin, M.; Zheng, J.; Lawrence, J. S.; Bryant, J. J.; Bland-Hawthorn, J.; Norris, B.; Cvetojevic, N.; Argyros, A.
Affiliation:
AA(Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia; Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia; CAASTRO: ARC Centre of Excellence for All-sky Astrophysics; Sydney Astrophotonic Instrumentation Laboratory (SAIL), School of Physics, University of Sydney, Sydney, NSW 2006, Australia 0000-0002-5368-0068), AB(Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia; Sydney Astrophotonic Instrumentation Laboratory (SAIL), School of Physics, University of Sydney, Sydney, NSW 2006, Australia), AC(Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia), AD(Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia), AE(Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia), AF(Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia; Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia; CAASTRO: ARC Centre of Excellence for All-sky Astrophysics), AG(Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia; Sydney Astrophotonic Instrumentation Laboratory (SAIL), School of Physics, University of Sydney, Sydney, NSW 2006, Australia), AH(Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia; Sydney Astrophotonic Instrumentation Laboratory (SAIL), School of Physics, University of Sydney, Sydney, NSW 2006, Australia), AI(Sydney Institute for Astronomy, School of Physics, University of Sydney, NSW 2006, Australia; Australian Astronomical Observatory, PO Box 915, North Ryde, NSW 1670, Australia; Sydney Astrophotonic Instrumentation Laboratory (SAIL), School of Physics, University of Sydney, Sydney, NSW 2006, Australia; CUDOS: ARC Centre of Excellence, Centre for Ultrahigh bandwidth Devices for Optical Systems; Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, Sydney, NSW 2006, Australia), AJ(Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, Sydney, NSW 2006, Australia)
Publication:
Publications of the Astronomical Society of Australia, Volume 34, id.e008 10 pp. (PASA Homepage)
Publication Date:
01/2017
Origin:
CUP
Astronomy Keywords:
instrumentation: adaptive optics, instrumentation: high angular resolution, instrumentation: miscellaneous, telescopes
Abstract Copyright:
2017: Astronomical Society of Australia
DOI:
10.1017/pasa.2017.1
Bibliographic Code:
2017PASA...34....8R

Abstract

Imaging bundles provide a convenient way to translate a spatially coherent image, yet conventional imaging bundles made from silica fibre optics typically remain expensive with large losses due to poor filling factors ( 40%). We present the characterisation of a novel polymer imaging bundle made from poly(methyl methacrylate) (PMMA) that is considerably cheaper and a better alternative to silica imaging bundles over short distances ( 1 m; from the middle to the edge of a telescope's focal plane). The large increase in filling factor (92% for the polymer imaging bundle) outweighs the large increase in optical attenuation from using PMMA (1 dB/m) instead of silica (10-3 dB/m). We present and discuss current and possible future multi-object applications of the polymer imaging bundle in the context of astronomical instrumentation including: field acquisition, guiding, wavefront sensing, narrow-band imaging, aperture masking, and speckle imaging. The use of PMMA limits its use in low-light applications (e.g., imaging of galaxies); however, it is possible to fabricate polymer imaging bundles from a range of polymers that are better suited to the desired science.
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