GNOSIS: a novel near-infrared OH suppression unit at the AAT | Zendy

Christopher Q. Trinh | Zendy; Simon Ellis | Zendy; Jon Lawrence | Zendy; A. J. Horton | Zendy; Joss BlandHawthorn | Zendy; Sergio G. Leon-Saval | Zendy; Julia J. Bryant | Zendy; Scott W. Case | Zendy; Matthew Colless | Zendy; W. Couch | Zendy; K. C. Freeman | Zendy; Luke Gers | Zendy; Karl Glazebrook | Zendy; Roger Haynes | Zendy; S. Lee | Zendy; HansGerd Löhmannsröben | Zendy; Stan Miziarski | Zendy; John W. O’Byrne | Zendy; William Rambold | Zendy; M. M. Roth | Zendy; B. Schmidt | Zendy; Keith Shortridge | Zendy; Scott Smedley | Zendy; C. G. Tinney | Zendy; Pascal Xavier | Zendy; Jessica Zheng | Zendy

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GNOSIS: a novel near-infrared OH suppression unit at the AAT

Author(s) -

Christopher Q. Trinh,

Simon Ellis,

Jon Lawrence,

A. J. Horton,

Joss BlandHawthorn,

Sergio G. Leon-Saval,

Julia J. Bryant,

Scott W. Case,

Matthew Colless,

W. Couch,

K. C. Freeman,

Luke Gers,

Karl Glazebrook,

Roger Haynes,

S. Lee,

HansGerd Löhmannsröben,

Stan Miziarski,

John W. O’Byrne,

William Rambold,

M. M. Roth,

B. Schmidt,

Keith Shortridge,

Scott Smedley,

C. G. Tinney,

Pascal Xavier,

Jessica Zheng

Publication year - 2012

Publication title -

proceedings of spie, the international society for optical engineering/proceedings of spie

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.192

H-Index - 176

eISSN - 1996-756X

pISSN - 0277-786X

DOI - 10.1117/12.926483

Subject(s) - spectrograph , telescope , fiber bragg grating , sky , optics , throughput , physics , spectral line , computer science , optical fiber , telecommunications , astrophysics , astronomy , wireless

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

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