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 & 6 others B. Schmidt, K. Shortridge, S. Smedley, C. G. Tinney, P. Xavier, J. Zheng

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

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.

LanguageEnglish
Title of host publicationGround-based and Airborne Instrumentation for Astronomy IV
EditorsIan S. McLean, Suzanne K. Ramsay, Hideki Takami
Place of PublicationBellingham, Washington
PublisherSPIE
Pages1-9
Number of pages9
ISBN (Print)9780819491473
DOIs
Publication statusPublished - 2012
EventGround-Based and Airborne Instrumentation for Astronomy IV - Amsterdam, Netherlands
Duration: 1 Jul 20126 Jul 2012

Publication series

NameProceedings of SPIE
PublisherSPIE
Volume8446
ISSN (Print)0277-786X

Other

OtherGround-Based and Airborne Instrumentation for Astronomy IV
CountryNetherlands
CityAmsterdam
Period1/07/126/07/12

Fingerprint

Telescopes
Telescope
hydroxyl emission
Infrared
retarding
telescopes
Infrared radiation
Unit
Commissioning
Spectrographs
Notch
Spectrograph
Fiber Grating
Fiber Bragg gratings
Bragg Grating
notches
Hydroxyl Radical
Fidelity
Gratings
Bragg gratings

Keywords

  • Astrophotonics
  • Fiber Bragg gratings
  • Near-infrared
  • OH suppression
  • Photonic lantern

Cite this

Trinh, C. Q., Ellis, S. C., Lawrence, J. S., Horton, A. J., Bland-Hawthorn, J., Leon-Saval, S. G., ... Zheng, J. (2012). GNOSIS: a novel near-infrared OH suppression unit at the AAT. In I. S. McLean, S. K. Ramsay, & H. Takami (Eds.), Ground-based and Airborne Instrumentation for Astronomy IV (pp. 1-9). [84463J] (Proceedings of SPIE; Vol. 8446). Bellingham, Washington: SPIE. https://doi.org/10.1117/12.926483
Trinh, C. Q. ; Ellis, S. C. ; Lawrence, J. S. ; Horton, A. J. ; Bland-Hawthorn, J. ; Leon-Saval, S. G. ; Bryant, J. ; Case, S. ; Colless, M. ; Couch, W. ; Freeman, K. ; Gers, L. ; Glazebrook, K. ; Haynes, R. ; Lee, S. ; Löhmannsröben, H. G. ; Miziarski, S. ; O'Byrne, J. ; Rambold, W. ; Roth, M. M. ; Schmidt, B. ; Shortridge, K. ; Smedley, S. ; Tinney, C. G. ; Xavier, P. ; Zheng, J. / GNOSIS : a novel near-infrared OH suppression unit at the AAT. Ground-based and Airborne Instrumentation for Astronomy IV. editor / Ian S. McLean ; Suzanne K. Ramsay ; Hideki Takami. Bellingham, Washington : SPIE, 2012. pp. 1-9 (Proceedings of SPIE).
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Trinh, CQ, Ellis, SC, Lawrence, JS, Horton, AJ, Bland-Hawthorn, J, Leon-Saval, SG, Bryant, J, Case, S, Colless, M, Couch, W, Freeman, K, Gers, L, Glazebrook, K, Haynes, R, Lee, S, Löhmannsröben, HG, Miziarski, S, O'Byrne, J, Rambold, W, Roth, MM, Schmidt, B, Shortridge, K, Smedley, S, Tinney, CG, Xavier, P & Zheng, J 2012, GNOSIS: a novel near-infrared OH suppression unit at the AAT. in IS McLean, SK Ramsay & H Takami (eds), Ground-based and Airborne Instrumentation for Astronomy IV., 84463J, Proceedings of SPIE, vol. 8446, SPIE, Bellingham, Washington, pp. 1-9, Ground-Based and Airborne Instrumentation for Astronomy IV, Amsterdam, Netherlands, 1/07/12. https://doi.org/10.1117/12.926483

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

Ground-based and Airborne Instrumentation for Astronomy IV. ed. / Ian S. McLean; Suzanne K. Ramsay; Hideki Takami. Bellingham, Washington : SPIE, 2012. p. 1-9 84463J (Proceedings of SPIE; Vol. 8446).

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

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AU - Ellis,S. C.

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AU - Roth,M. M.

AU - Schmidt,B.

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AB - 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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KW - OH suppression

KW - Photonic lantern

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M3 - Conference proceeding contribution

SN - 9780819491473

T3 - Proceedings of SPIE

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BT - Ground-based and Airborne Instrumentation for Astronomy IV

PB - SPIE

CY - Bellingham, Washington

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Trinh CQ, Ellis SC, Lawrence JS, Horton AJ, Bland-Hawthorn J, Leon-Saval SG et al. GNOSIS: a novel near-infrared OH suppression unit at the AAT. In McLean IS, Ramsay SK, Takami H, editors, Ground-based and Airborne Instrumentation for Astronomy IV. Bellingham, Washington: SPIE. 2012. p. 1-9. 84463J. (Proceedings of SPIE). https://doi.org/10.1117/12.926483