PRAXIS: an OH suppression optimised near infrared spectrograph

S. C. Ellis; J. Bland-Hawthorn; S. Bauer; S. Case; R. Content; T. Fechner; D. Giannone; R. Haynes; E. Hernandez; A. J. Horton; U. Klauser; J. S. Lawrence; S. G. Leon-Saval; H. G. Löhmannsröben; S. S. Min; N. Pai; M. Roth; L. Waller; Ross Zhelem

doi:10.1117/12.2539883

PRAXIS: an OH suppression optimised near infrared spectrograph

S. C. Ellis^*, J. Bland-Hawthorn, S. Bauer, S. Case, R. Content, T. Fechner, D. Giannone, R. Haynes, E. Hernandez, A. J. Horton, U. Klauser, J. S. Lawrence, S. G. Leon-Saval, H. G. Löhmannsröben, S. S. Min, N. Pai, M. Roth, L. Waller, Ross Zhelem

^*Corresponding author for this work

Australian Astronomical Optics

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

2 Citations (Scopus)

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Abstract

The problem of atmospheric emission from OH molecules is a long standing problem for near-infrared astronomy. We are now close to solving this problem for the first time with the PRAXIS instrument. PRAXIS is a unique spectrograph which is fed by fibres that remove the OH background, and is optimised specifically to benefit from OH-Suppression. The OH suppression is achieved with fibre Bragg gratings, which were tested successfully on the GNOSIS instrument. The OH lines are suppressed by a factor of ∼1000, leading to a reduction of the integrated background of a factor 9. A future upgrade to multicore fibre Bragg gratings will further increase this reduction. PRAXIS has had two commissioning runs, with a third commissioning run planned for July 2019, which will be presented at the conference. PRAXIS has a measured throughput of 20 %, demonstrating high efficiency in an OH suppression instrument for the first time. Science verification observations of Seyfert galaxies demonstrate the potential of OH suppression.

Original language	English
Title of host publication	Advances in Optical Astronomical Instrumentation 2019
Editors	Simon Ellis, Céline d'Orgeville
Place of Publication	Bellingham, Washington
Publisher	SPIE
Pages	1-2
Number of pages	2
ISBN (Electronic)	9781510631472
ISBN (Print)	9781510631465
DOIs	https://doi.org/10.1117/12.2539883
Publication status	Published - 6 Jan 2020
Event	Advances in Optical Astronomical Instrumentation 2019 - Melbourne, Australia Duration: 9 Dec 2019 → 12 Dec 2019

Publication series

Name	Proceedings of SPIE
Publisher	SPIE
Volume	11203
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Advances in Optical Astronomical Instrumentation 2019
Country/Territory	Australia
City	Melbourne
Period	9/12/19 → 12/12/19

Bibliographical note

Copyright 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

Astrophotonics
Fibre Bragg gratings
Near infrared
OH suppression
Spectroscopy

Access to Document

10.1117/12.2539883

Publisher version (open access)Final published version, 333 KBLicence: Other

Cite this

Ellis, S. C., Bland-Hawthorn, J., Bauer, S., Case, S., Content, R., Fechner, T., Giannone, D., Haynes, R., Hernandez, E., Horton, A. J., Klauser, U., Lawrence, J. S., Leon-Saval, S. G., Löhmannsröben, H. G., Min, S. S., Pai, N., Roth, M., Waller, L., & Zhelem, R. (2020). PRAXIS: an OH suppression optimised near infrared spectrograph. In S. Ellis, & C. d'Orgeville (Eds.), Advances in Optical Astronomical Instrumentation 2019 (pp. 1-2). Article 1120312 (Proceedings of SPIE; Vol. 11203). SPIE. https://doi.org/10.1117/12.2539883

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title = "PRAXIS: an OH suppression optimised near infrared spectrograph",

abstract = "The problem of atmospheric emission from OH molecules is a long standing problem for near-infrared astronomy. We are now close to solving this problem for the first time with the PRAXIS instrument. PRAXIS is a unique spectrograph which is fed by fibres that remove the OH background, and is optimised specifically to benefit from OH-Suppression. The OH suppression is achieved with fibre Bragg gratings, which were tested successfully on the GNOSIS instrument. The OH lines are suppressed by a factor of ∼1000, leading to a reduction of the integrated background of a factor 9. A future upgrade to multicore fibre Bragg gratings will further increase this reduction. PRAXIS has had two commissioning runs, with a third commissioning run planned for July 2019, which will be presented at the conference. PRAXIS has a measured throughput of 20 %, demonstrating high efficiency in an OH suppression instrument for the first time. Science verification observations of Seyfert galaxies demonstrate the potential of OH suppression.",

keywords = "Astrophotonics, Fibre Bragg gratings, Near infrared, OH suppression, Spectroscopy",

author = "Ellis, {S. C.} and J. Bland-Hawthorn and S. Bauer and S. Case and R. Content and T. Fechner and D. Giannone and R. Haynes and E. Hernandez and Horton, {A. J.} and U. Klauser and Lawrence, {J. S.} and Leon-Saval, {S. G.} and L{\"o}hmannsr{\"o}ben, {H. G.} and Min, {S. S.} and N. Pai and M. Roth and L. Waller and Ross Zhelem",

note = "Copyright 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.; Advances in Optical Astronomical Instrumentation 2019 ; Conference date: 09-12-2019 Through 12-12-2019",

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doi = "10.1117/12.2539883",

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isbn = "9781510631465",

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Ellis, SC, Bland-Hawthorn, J, Bauer, S, Case, S, Content, R, Fechner, T, Giannone, D, Haynes, R, Hernandez, E, Horton, AJ, Klauser, U, Lawrence, JS, Leon-Saval, SG, Löhmannsröben, HG, Min, SS, Pai, N, Roth, M, Waller, L & Zhelem, R 2020, PRAXIS: an OH suppression optimised near infrared spectrograph. in S Ellis & C d'Orgeville (eds), Advances in Optical Astronomical Instrumentation 2019., 1120312, Proceedings of SPIE, vol. 11203, SPIE, Bellingham, Washington, pp. 1-2, Advances in Optical Astronomical Instrumentation 2019, Melbourne, Australia, 9/12/19. https://doi.org/10.1117/12.2539883

PRAXIS: an OH suppression optimised near infrared spectrograph. / Ellis, S. C.; Bland-Hawthorn, J.; Bauer, S. et al.
Advances in Optical Astronomical Instrumentation 2019. ed. / Simon Ellis; Céline d'Orgeville. Bellingham, Washington: SPIE, 2020. p. 1-2 1120312 (Proceedings of SPIE; Vol. 11203).

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding contribution › peer-review

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AU - Case, S.

AU - Content, R.

AU - Fechner, T.

AU - Giannone, D.

AU - Haynes, R.

AU - Hernandez, E.

AU - Horton, A. J.

AU - Klauser, U.

AU - Lawrence, J. S.

AU - Leon-Saval, S. G.

AU - Löhmannsröben, H. G.

AU - Min, S. S.

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AU - Roth, M.

AU - Waller, L.

AU - Zhelem, Ross

N1 - Copyright 2020 Society of Photo-Optical Instrumentation Engineers (SPIE). One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

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N2 - The problem of atmospheric emission from OH molecules is a long standing problem for near-infrared astronomy. We are now close to solving this problem for the first time with the PRAXIS instrument. PRAXIS is a unique spectrograph which is fed by fibres that remove the OH background, and is optimised specifically to benefit from OH-Suppression. The OH suppression is achieved with fibre Bragg gratings, which were tested successfully on the GNOSIS instrument. The OH lines are suppressed by a factor of ∼1000, leading to a reduction of the integrated background of a factor 9. A future upgrade to multicore fibre Bragg gratings will further increase this reduction. PRAXIS has had two commissioning runs, with a third commissioning run planned for July 2019, which will be presented at the conference. PRAXIS has a measured throughput of 20 %, demonstrating high efficiency in an OH suppression instrument for the first time. Science verification observations of Seyfert galaxies demonstrate the potential of OH suppression.

AB - The problem of atmospheric emission from OH molecules is a long standing problem for near-infrared astronomy. We are now close to solving this problem for the first time with the PRAXIS instrument. PRAXIS is a unique spectrograph which is fed by fibres that remove the OH background, and is optimised specifically to benefit from OH-Suppression. The OH suppression is achieved with fibre Bragg gratings, which were tested successfully on the GNOSIS instrument. The OH lines are suppressed by a factor of ∼1000, leading to a reduction of the integrated background of a factor 9. A future upgrade to multicore fibre Bragg gratings will further increase this reduction. PRAXIS has had two commissioning runs, with a third commissioning run planned for July 2019, which will be presented at the conference. PRAXIS has a measured throughput of 20 %, demonstrating high efficiency in an OH suppression instrument for the first time. Science verification observations of Seyfert galaxies demonstrate the potential of OH suppression.

KW - Astrophotonics

KW - Fibre Bragg gratings

KW - Near infrared

KW - OH suppression

KW - Spectroscopy

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DO - 10.1117/12.2539883

M3 - Conference proceeding contribution

AN - SCOPUS:85079628794

SN - 9781510631465

T3 - Proceedings of SPIE

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EP - 2

BT - Advances in Optical Astronomical Instrumentation 2019

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ER -

PRAXIS: an OH suppression optimised near infrared spectrograph

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