The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT)

Andrew Szentgyorgyi; Daniel Baldwin; Stuart Barnes; Jacob Bean; Sagi Ben-Ami; Patricia Brennan; Jamie Budynkiewicz; Moo Young Chun; Charlie Conroy; Jeffrey D. Crane; Harland Epps; Ian Evans; Janet Evans; Jeff Foster; Anna Frebel; Thomas Gauron; Dani Guzmán; Tyson Hare; Bi Ho Jang; Jeong Gyun Jang; Andres Jordan; Jihun Kim; Kang Miin Kim; Claudia Mendes Mendes De Oliveira; Mercedes Lopez-Morales; Kenneth McCracken; Stuart McMuldroch; Joseph Miller; Mark Mueller; Jae Sok Oh; Cem Onyuksel; Mark Ordway; Byeong Gon Park; Chan Park; Sung Joon Park; Charles Paxson; David Phillips; David Plummer; William Podgorski; Andreas Seifahrt; Daniel Stark; Joao Steiner; Alan Uomoto; Ronald Walsworth; Young Sam Yu

doi:10.1117/12.2233506

The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT)

Andrew Szentgyorgyi, Daniel Baldwin, Stuart Barnes, Jacob Bean, Sagi Ben-Ami, Patricia Brennan, Jamie Budynkiewicz, Moo Young Chun, Charlie Conroy, Jeffrey D. Crane, Harland Epps, Ian Evans, Janet Evans, Jeff Foster, Anna Frebel, Thomas Gauron, Dani Guzmán, Tyson Hare, Bi Ho Jang, Jeong Gyun JangAndres Jordan, Jihun Kim, Kang Miin Kim, Claudia Mendes Mendes De Oliveira, Mercedes Lopez-Morales, Kenneth McCracken, Stuart McMuldroch, Joseph Miller, Mark Mueller, Jae Sok Oh, Cem Onyuksel, Mark Ordway, Byeong Gon Park, Chan Park, Sung Joon Park, Charles Paxson, David Phillips, David Plummer, William Podgorski, Andreas Seifahrt, Daniel Stark, Joao Steiner, Alan Uomoto, Ronald Walsworth, Young Sam Yu

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

43 Scopus citations

Abstract

The GMT-Consortium Large Earth Finder (G-CLEF) will be a cross-dispersed, optical band echelle spectrograph to be delivered as the first light scientific instrument for the Giant Magellan Telescope (GMT) in 2022. G-CLEF is vacuum enclosed and fiber-fed to enable precision radial velocity (PRV) measurements, especially for the detection and characterization of low-mass exoplanets orbiting solar-type stars. The passband of G-CLEF is broad, extending from 3500Å to 9500Å. This passband provides good sensitivity at blue wavelengths for stellar abundance studies and deep red response for observations of high-redshift phenomena. The design of G-CLEF incorporates several novel technical innovations. We give an overview of the innovative features of the current design. G-CLEF will be the first PRV spectrograph to have a composite optical bench so as to exploit that material's extremely low coefficient of thermal expansion, high in-plane thermal conductivity and high stiffness-to-mass ratio. The spectrograph camera subsystem is divided into a red and a blue channel, split by a dichroic, so there are two independent refractive spectrograph cameras. The control system software is being developed in model-driven software context that has been adopted globally by the GMT. G-CLEF has been conceived and designed within a strict systems engineering framework. As a part of this process, we have developed a analytical toolset to assess the predicted performance of G-CLEF as it has evolved through design phases.

Original language	English
Title of host publication	Ground-Based and Airborne Instrumentation for Astronomy VI
Editors	Luc Simard, Christopher J. Evans, Hideki Takami
Publisher	SPIE
ISBN (Electronic)	9781510601956
DOIs	https://doi.org/10.1117/12.2233506
State	Published - 2016
Externally published	Yes
Event	Ground-Based and Airborne Instrumentation for Astronomy VI - Edinburgh, United Kingdom Duration: 26 Jun 2016 → 30 Jun 2016

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9908
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Ground-Based and Airborne Instrumentation for Astronomy VI
Country/Territory	United Kingdom
City	Edinburgh
Period	26/06/16 → 30/06/16

Keywords

ELTs
Echelle spectrograph
G-CLEF
GMT
High dispersion spectroscopy
Precision radial velocity

Access to Document

10.1117/12.2233506

Cite this

Szentgyorgyi, A., Baldwin, D., Barnes, S., Bean, J., Ben-Ami, S., Brennan, P., Budynkiewicz, J., Chun, M. Y., Conroy, C., Crane, J. D., Epps, H., Evans, I., Evans, J., Foster, J., Frebel, A., Gauron, T., Guzmán, D., Hare, T., Jang, B. H., ... Yu, Y. S. (2016). The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT). In L. Simard, C. J. Evans, & H. Takami (Eds.), Ground-Based and Airborne Instrumentation for Astronomy VI Article 990822 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9908). SPIE. https://doi.org/10.1117/12.2233506

Szentgyorgyi, Andrew ; Baldwin, Daniel ; Barnes, Stuart et al. / The GMT-Consortium Large Earth Finder (G-CLEF) : An optical Echelle spectrograph for the Giant Magellan Telescope (GMT). Ground-Based and Airborne Instrumentation for Astronomy VI. editor / Luc Simard ; Christopher J. Evans ; Hideki Takami. SPIE, 2016. (Proceedings of SPIE - The International Society for Optical Engineering).

@inproceedings{7130bd3b69f341d7a7c6685c767d34c2,

title = "The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT)",

abstract = "The GMT-Consortium Large Earth Finder (G-CLEF) will be a cross-dispersed, optical band echelle spectrograph to be delivered as the first light scientific instrument for the Giant Magellan Telescope (GMT) in 2022. G-CLEF is vacuum enclosed and fiber-fed to enable precision radial velocity (PRV) measurements, especially for the detection and characterization of low-mass exoplanets orbiting solar-type stars. The passband of G-CLEF is broad, extending from 3500{\AA} to 9500{\AA}. This passband provides good sensitivity at blue wavelengths for stellar abundance studies and deep red response for observations of high-redshift phenomena. The design of G-CLEF incorporates several novel technical innovations. We give an overview of the innovative features of the current design. G-CLEF will be the first PRV spectrograph to have a composite optical bench so as to exploit that material's extremely low coefficient of thermal expansion, high in-plane thermal conductivity and high stiffness-to-mass ratio. The spectrograph camera subsystem is divided into a red and a blue channel, split by a dichroic, so there are two independent refractive spectrograph cameras. The control system software is being developed in model-driven software context that has been adopted globally by the GMT. G-CLEF has been conceived and designed within a strict systems engineering framework. As a part of this process, we have developed a analytical toolset to assess the predicted performance of G-CLEF as it has evolved through design phases.",

keywords = "ELTs, Echelle spectrograph, G-CLEF, GMT, High dispersion spectroscopy, Precision radial velocity",

author = "Andrew Szentgyorgyi and Daniel Baldwin and Stuart Barnes and Jacob Bean and Sagi Ben-Ami and Patricia Brennan and Jamie Budynkiewicz and Chun, {Moo Young} and Charlie Conroy and Crane, {Jeffrey D.} and Harland Epps and Ian Evans and Janet Evans and Jeff Foster and Anna Frebel and Thomas Gauron and Dani Guzm{\'a}n and Tyson Hare and Jang, {Bi Ho} and Jang, {Jeong Gyun} and Andres Jordan and Jihun Kim and Kim, {Kang Miin} and {Mendes De Oliveira}, {Claudia Mendes} and Mercedes Lopez-Morales and Kenneth McCracken and Stuart McMuldroch and Joseph Miller and Mark Mueller and Oh, {Jae Sok} and Cem Onyuksel and Mark Ordway and Park, {Byeong Gon} and Chan Park and Park, {Sung Joon} and Charles Paxson and David Phillips and David Plummer and William Podgorski and Andreas Seifahrt and Daniel Stark and Joao Steiner and Alan Uomoto and Ronald Walsworth and Yu, {Young Sam}",

note = "Publisher Copyright: {\textcopyright} 2016 SPIE.; Ground-Based and Airborne Instrumentation for Astronomy VI ; Conference date: 26-06-2016 Through 30-06-2016",

year = "2016",

doi = "10.1117/12.2233506",

language = "English",

series = "Proceedings of SPIE - The International Society for Optical Engineering",

publisher = "SPIE",

editor = "Luc Simard and Evans, {Christopher J.} and Hideki Takami",

booktitle = "Ground-Based and Airborne Instrumentation for Astronomy VI",

}

Szentgyorgyi, A, Baldwin, D, Barnes, S, Bean, J, Ben-Ami, S, Brennan, P, Budynkiewicz, J, Chun, MY, Conroy, C, Crane, JD, Epps, H, Evans, I, Evans, J, Foster, J, Frebel, A, Gauron, T, Guzmán, D, Hare, T, Jang, BH, Jang, JG, Jordan, A, Kim, J, Kim, KM, Mendes De Oliveira, CM, Lopez-Morales, M, McCracken, K, McMuldroch, S, Miller, J, Mueller, M, Oh, JS, Onyuksel, C, Ordway, M, Park, BG, Park, C, Park, SJ, Paxson, C, Phillips, D, Plummer, D, Podgorski, W, Seifahrt, A, Stark, D, Steiner, J, Uomoto, A, Walsworth, R & Yu, YS 2016, The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT). in L Simard, CJ Evans & H Takami (eds), Ground-Based and Airborne Instrumentation for Astronomy VI., 990822, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9908, SPIE, Ground-Based and Airborne Instrumentation for Astronomy VI, Edinburgh, United Kingdom, 26/06/16. https://doi.org/10.1117/12.2233506

The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT). / Szentgyorgyi, Andrew; Baldwin, Daniel; Barnes, Stuart et al.
Ground-Based and Airborne Instrumentation for Astronomy VI. ed. / Luc Simard; Christopher J. Evans; Hideki Takami. SPIE, 2016. 990822 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9908).

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

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AU - McMuldroch, Stuart

AU - Miller, Joseph

AU - Mueller, Mark

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AU - Onyuksel, Cem

AU - Ordway, Mark

AU - Park, Byeong Gon

AU - Park, Chan

AU - Park, Sung Joon

AU - Paxson, Charles

AU - Phillips, David

AU - Plummer, David

AU - Podgorski, William

AU - Seifahrt, Andreas

AU - Stark, Daniel

AU - Steiner, Joao

AU - Uomoto, Alan

AU - Walsworth, Ronald

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N2 - The GMT-Consortium Large Earth Finder (G-CLEF) will be a cross-dispersed, optical band echelle spectrograph to be delivered as the first light scientific instrument for the Giant Magellan Telescope (GMT) in 2022. G-CLEF is vacuum enclosed and fiber-fed to enable precision radial velocity (PRV) measurements, especially for the detection and characterization of low-mass exoplanets orbiting solar-type stars. The passband of G-CLEF is broad, extending from 3500Å to 9500Å. This passband provides good sensitivity at blue wavelengths for stellar abundance studies and deep red response for observations of high-redshift phenomena. The design of G-CLEF incorporates several novel technical innovations. We give an overview of the innovative features of the current design. G-CLEF will be the first PRV spectrograph to have a composite optical bench so as to exploit that material's extremely low coefficient of thermal expansion, high in-plane thermal conductivity and high stiffness-to-mass ratio. The spectrograph camera subsystem is divided into a red and a blue channel, split by a dichroic, so there are two independent refractive spectrograph cameras. The control system software is being developed in model-driven software context that has been adopted globally by the GMT. G-CLEF has been conceived and designed within a strict systems engineering framework. As a part of this process, we have developed a analytical toolset to assess the predicted performance of G-CLEF as it has evolved through design phases.

AB - The GMT-Consortium Large Earth Finder (G-CLEF) will be a cross-dispersed, optical band echelle spectrograph to be delivered as the first light scientific instrument for the Giant Magellan Telescope (GMT) in 2022. G-CLEF is vacuum enclosed and fiber-fed to enable precision radial velocity (PRV) measurements, especially for the detection and characterization of low-mass exoplanets orbiting solar-type stars. The passband of G-CLEF is broad, extending from 3500Å to 9500Å. This passband provides good sensitivity at blue wavelengths for stellar abundance studies and deep red response for observations of high-redshift phenomena. The design of G-CLEF incorporates several novel technical innovations. We give an overview of the innovative features of the current design. G-CLEF will be the first PRV spectrograph to have a composite optical bench so as to exploit that material's extremely low coefficient of thermal expansion, high in-plane thermal conductivity and high stiffness-to-mass ratio. The spectrograph camera subsystem is divided into a red and a blue channel, split by a dichroic, so there are two independent refractive spectrograph cameras. The control system software is being developed in model-driven software context that has been adopted globally by the GMT. G-CLEF has been conceived and designed within a strict systems engineering framework. As a part of this process, we have developed a analytical toolset to assess the predicted performance of G-CLEF as it has evolved through design phases.

KW - ELTs

KW - Echelle spectrograph

KW - G-CLEF

KW - GMT

KW - High dispersion spectroscopy

KW - Precision radial velocity

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T3 - Proceedings of SPIE - The International Society for Optical Engineering

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Szentgyorgyi A, Baldwin D, Barnes S, Bean J, Ben-Ami S, Brennan P et al. The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT). In Simard L, Evans CJ, Takami H, editors, Ground-Based and Airborne Instrumentation for Astronomy VI. SPIE. 2016. 990822. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2233506

The GMT-Consortium Large Earth Finder (G-CLEF): An optical Echelle spectrograph for the Giant Magellan Telescope (GMT)

Abstract

Publication series

Conference

Keywords

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