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

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

doi:10.1117/12.926483

24 September 2012 GNOSIS: a novel near-infrared OH suppression unit at the AAT

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

Author Affiliations +

Proceedings Volume 8446, Ground-based and Airborne Instrumentation for Astronomy IV; 84463J (2012) https://doi.org/10.1117/12.926483
Event: SPIE Astronomical Telescopes + Instrumentation, 2012, Amsterdam, Netherlands

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.

Citation Download Citation

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, and J. Zheng "GNOSIS: a novel near-infrared OH suppression unit at the AAT", Proc. SPIE 8446, Ground-based and Airborne Instrumentation for Astronomy IV, 84463J (24 September 2012); https://doi.org/10.1117/12.926483

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available