Share Email Print
cover

Proceedings Paper

GNOSIS: a novel near-infrared OH suppression unit at the AAT
Author(s): C. Q. Trinh; S. C. Ellis; J. S. Lawrence; A. J. Horton; J. Bland-Hawthorn; S. G. Leon-Saval; J. Bryant; S. Case; M. Colless; W. Couch; K. Freeman; L. Gers; K. Glazebrook; R. Haynes; S. Lee; H.-G. Löhmannsröben; S. Miziarski; J. O'Byrne; W. Rambold; M. M. Roth; B. Schmidt; K. Shortridge; S. Smedley; C. G. Tinney; P. Xavier; J. Zheng
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

GNOSIS has provided the first on-telescope demonstration of a concept to utilize complex aperioidc fiber Bragg gratings to suppress the 103 brightest atmospheric hydroxyl emission doublets between 1.47-1.7 μm. The unit is designed to be used at the 3.9-meter Anglo-Australian Telescope (AAT) feeding the IRIS2 spectrograph. Unlike previous atmospheric suppression techniques GNOSIS suppresses the lines before dispersion. We present the results of laboratory and on-sky tests from instrument commissioning. These tests reveal excellent suppression performance by the gratings and high inter-notch throughput, which combine to produce high fidelity OH-free spectra.

Paper Details

Date Published: 24 September 2012
PDF: 9 pages
Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84463J (24 September 2012); doi: 10.1117/12.926483
Show Author Affiliations
C. Q. Trinh, Sydney Institute for Astronomy, The Univ. of Sydney (Australia)
S. C. Ellis, Australian Astronomical Observatory (Australia)
Sydney Institute for Astronomy, The Univ. of Sydney (Australia)
J. S. Lawrence, Australian Astronomical Observatory (Australia)
A. J. Horton, Australian Astronomical Observatory (Australia)
J. Bland-Hawthorn, Sydney Institute for Astronomy, The Univ. of Sydney (Australia)
Institute of Photonics and Optical Science, The Univ. of Sydney (Australia)
S. G. Leon-Saval, Institute of Photonics and Optical Science, The Univ. of Sydney (Australia)
J. Bryant, Sydney Institute for Astronomy, The Univ. of Sydney (Australia)
CAASTRO (Australia)
S. Case, Australian Astronomical Observatory (Australia)
M. Colless, Australian Astronomical Observatory (Australia)
W. Couch, Swinburne Univ. of Technology (Australia)
K. Freeman, Australian National Univ. (Australia)
L. Gers, Australian Astronomical Observatory (Australia)
K. Glazebrook, Swinburne Univ. of Technology (Australia)
R. Haynes, innoFSPEC, Leibniz-Institut für Astrophysik Potsdam (Germany)
S. Lee, Australian Astronomical Observatory (Australia)
H.-G. Löhmannsröben, innoFSPEC, Univ. Potsdam (Germany)
S. Miziarski, Australian Astronomical Observatory (Australia)
J. O'Byrne, The Univ. of Sydney (Australia)
W. Rambold, innoFSPEC, Leibniz-Institut für Astrophysik Potsdam (Germany)
M. M. Roth, innoFSPEC, Leibniz-Institut für Astrophysik Potsdam (Germany)
B. Schmidt, The Australian National Univ. (Australia)
K. Shortridge, Australian Astronomical Observatory (Australia)
S. Smedley, Australian Astronomical Observatory (Australia)
C. G. Tinney, The Univ. of New South Wales (Australia)
P. Xavier, Australian Astronomical Observatory (Australia)
J. Zheng, Australian Astronomical Observatory (Australia)


Published in SPIE Proceedings Vol. 8446:
Ground-based and Airborne Instrumentation for Astronomy IV
Ian S. McLean; Suzanne K. Ramsay; Hideki Takami, Editor(s)

© SPIE. Terms of Use
Back to Top