Liger at W. M. Keck Observatory: Overall Design and Science Drivers

Shelley A. Wright; Tucker Jones; James Larkin; Renate Kupke; Marc Kassis; Aaron Brown; David Andersen; Lee Armus; Bryson Cale; Maren Cosens; Devin Chu; Tuan Do; Chris Fassanacht; Deanne Fisher; Michael Fitzgerald; Andrea Ghez; Jenny Greene; Takeru Hayashi; Aurélien Hees; Jessie Hirtenstein; Chris Johnson; Jacqueline Keane; Patrick Kelly; Evan Kirby; Theodora Karalidi; Quinn Konopacky; Evan Kress; Jessica Lu; Jim Lyke; Kenneth Magnone; Jérôme Maire; Rosalie McGurk; Anne Medling; Maxwell Millar-Blanchaer; Quinn Minor; Reston Nash; Anna Nierenberg; Naveen Reddy; Michael Rich; Jean Baptiste Ruffio; Nils Erik Rundquist; Sanchit Sabhlok; David Sand; Ryan Sanders; Karin Sandstrom; Alice Shapley; Ji Man Sohn; Arun Surya; Tommaso Treu; Eric Wang; Kanaka Warad; Robert Weber; James Wiley; Peter Wizinowich; Michael H. Wong; Sherry Yeh

doi:10.1117/12.3020803

Liger at W. M. Keck Observatory: Overall Design and Science Drivers

Shelley A. Wright, Tucker Jones, James Larkin, Renate Kupke, Marc Kassis, Aaron Brown, David Andersen, Lee Armus, Bryson Cale, Maren Cosens, Devin Chu, Tuan Do, Chris Fassanacht, Deanne Fisher, Michael Fitzgerald, Andrea Ghez, Jenny Greene, Takeru Hayashi, Aurélien Hees, Jessie HirtensteinChris Johnson, Jacqueline Keane, Patrick Kelly, Evan Kirby, Theodora Karalidi, Quinn Konopacky, Evan Kress, Jessica Lu, Jim Lyke, Kenneth Magnone, Jérôme Maire, Rosalie McGurk, Anne Medling, Maxwell Millar-Blanchaer, Quinn Minor, Reston Nash, Anna Nierenberg, Naveen Reddy, Michael Rich, Jean Baptiste Ruffio, Nils Erik Rundquist, Sanchit Sabhlok, David Sand, Ryan Sanders, Karin Sandstrom, Alice Shapley, Ji Man Sohn, Arun Surya, Tommaso Treu, Eric Wang, Kanaka Warad, Robert Weber, James Wiley, Peter Wizinowich, Michael H. Wong, Sherry Yeh

Physics And Astronomy

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

Abstract

Liger is a next-generation near-infrared (0.81-2.45 µm) integral field spectrograph (IFS) and imaging camera for the W. M. Keck Observatory (WMKO) adaptive optics (AO) system. The instrument concept originated by coupling designs from WMKO AO instruments and the future Thirty Meter Telescope IRIS spectrograph. Liger is designed for the Keck I telescope to operate behind the upcoming Keck All-sky Precision Adaptive optics (KAPA) system. The imaging camera sequentially feeds an IFS that makes use of slicer assembly for the coarsest sampling (75 mas and 150 mas per spaxel) and lenslet array (14 mas and 31 mas per spaxel) for diffraction-limited sampling. The imaging camera makes use of off-axis parabolas and a Hawaii-2RG detector to achieve a 14 mas/pixel plate scale and 20.5”×20.5” field of view. The IFS offers a range of spectral resolving power of R=4,000-10,000 and yields large fields of view for an AO-fed IFS. Liger will enable new science by providing enhanced capabilities, including higher spectral resolving power, access to shorter wavelengths, and larger fields of view than any current or planned ground- or space-based IFS system. Liger will be able to unlock previously inaccessible science across a wide range of the cosmos, such as dark matter substructure, supermassive black holes, the Galactic Center, exoplanet atmospheres, and the time-variable Solar System. We present the overall design of the Liger subsystems and review unique science drivers.

Original language	English
Title of host publication	Ground-Based and Airborne Instrumentation for Astronomy X
Editors	Julia J. Bryant, Kentaro Motohara, Joel R. Vernet
ISBN (Electronic)	9781510675155
DOIs	https://doi.org/10.1117/12.3020803
State	Published - 2024
Event	Ground-Based and Airborne Instrumentation for Astronomy X 2024 - Yokohama, Japan Duration: Jun 16 2024 → Jun 21 2024

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	13096
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Conference

Conference	Ground-Based and Airborne Instrumentation for Astronomy X 2024
Country/Territory	Japan
City	Yokohama
Period	6/16/24 → 6/21/24

Bibliographical note

Publisher Copyright:
© 2024 SPIE.

Keywords

Adaptive Optics
Astrometry
Cryogenic
Imager
Integral Field Spectrograph
Near-infrared
Photometry
Spectroscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

Access to Document

10.1117/12.3020803

Cite this

Wright, S. A., Jones, T., Larkin, J., Kupke, R., Kassis, M., Brown, A., Andersen, D., Armus, L., Cale, B., Cosens, M., Chu, D., Do, T., Fassanacht, C., Fisher, D., Fitzgerald, M., Ghez, A., Greene, J., Hayashi, T., Hees, A., ... Yeh, S. (2024). Liger at W. M. Keck Observatory: Overall Design and Science Drivers. In J. J. Bryant, K. Motohara, & J. R. Vernet (Eds.), Ground-Based and Airborne Instrumentation for Astronomy X Article 130960G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13096). https://doi.org/10.1117/12.3020803

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abstract = "Liger is a next-generation near-infrared (0.81-2.45 µm) integral field spectrograph (IFS) and imaging camera for the W. M. Keck Observatory (WMKO) adaptive optics (AO) system. The instrument concept originated by coupling designs from WMKO AO instruments and the future Thirty Meter Telescope IRIS spectrograph. Liger is designed for the Keck I telescope to operate behind the upcoming Keck All-sky Precision Adaptive optics (KAPA) system. The imaging camera sequentially feeds an IFS that makes use of slicer assembly for the coarsest sampling (75 mas and 150 mas per spaxel) and lenslet array (14 mas and 31 mas per spaxel) for diffraction-limited sampling. The imaging camera makes use of off-axis parabolas and a Hawaii-2RG detector to achieve a 14 mas/pixel plate scale and 20.5”×20.5” field of view. The IFS offers a range of spectral resolving power of R=4,000-10,000 and yields large fields of view for an AO-fed IFS. Liger will enable new science by providing enhanced capabilities, including higher spectral resolving power, access to shorter wavelengths, and larger fields of view than any current or planned ground- or space-based IFS system. Liger will be able to unlock previously inaccessible science across a wide range of the cosmos, such as dark matter substructure, supermassive black holes, the Galactic Center, exoplanet atmospheres, and the time-variable Solar System. We present the overall design of the Liger subsystems and review unique science drivers.",

keywords = "Adaptive Optics, Astrometry, Cryogenic, Imager, Integral Field Spectrograph, Near-infrared, Photometry, Spectroscopy",

author = "Wright, {Shelley A.} and Tucker Jones and James Larkin and Renate Kupke and Marc Kassis and Aaron Brown and David Andersen and Lee Armus and Bryson Cale and Maren Cosens and Devin Chu and Tuan Do and Chris Fassanacht and Deanne Fisher and Michael Fitzgerald and Andrea Ghez and Jenny Greene and Takeru Hayashi and Aur{\'e}lien Hees and Jessie Hirtenstein and Chris Johnson and Jacqueline Keane and Patrick Kelly and Evan Kirby and Theodora Karalidi and Quinn Konopacky and Evan Kress and Jessica Lu and Jim Lyke and Kenneth Magnone and J{\'e}r{\^o}me Maire and Rosalie McGurk and Anne Medling and Maxwell Millar-Blanchaer and Quinn Minor and Reston Nash and Anna Nierenberg and Naveen Reddy and Michael Rich and Ruffio, {Jean Baptiste} and Rundquist, {Nils Erik} and Sanchit Sabhlok and David Sand and Ryan Sanders and Karin Sandstrom and Alice Shapley and Sohn, {Ji Man} and Arun Surya and Tommaso Treu and Eric Wang and Kanaka Warad and Robert Weber and James Wiley and Peter Wizinowich and Wong, {Michael H.} and Sherry Yeh",

note = "Publisher Copyright: {\textcopyright} 2024 SPIE.; Ground-Based and Airborne Instrumentation for Astronomy X 2024 ; Conference date: 16-06-2024 Through 21-06-2024",

year = "2024",

doi = "10.1117/12.3020803",

language = "English",

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

editor = "Bryant, {Julia J.} and Kentaro Motohara and Vernet, {Joel R.}",

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

}

Wright, SA, Jones, T, Larkin, J, Kupke, R, Kassis, M, Brown, A, Andersen, D, Armus, L, Cale, B, Cosens, M, Chu, D, Do, T, Fassanacht, C, Fisher, D, Fitzgerald, M, Ghez, A, Greene, J, Hayashi, T, Hees, A, Hirtenstein, J, Johnson, C, Keane, J, Kelly, P, Kirby, E, Karalidi, T, Konopacky, Q, Kress, E, Lu, J, Lyke, J, Magnone, K, Maire, J, McGurk, R, Medling, A, Millar-Blanchaer, M, Minor, Q, Nash, R, Nierenberg, A, Reddy, N, Rich, M, Ruffio, JB, Rundquist, NE, Sabhlok, S, Sand, D, Sanders, R, Sandstrom, K, Shapley, A, Sohn, JM, Surya, A, Treu, T, Wang, E, Warad, K, Weber, R, Wiley, J, Wizinowich, P, Wong, MH & Yeh, S 2024, Liger at W. M. Keck Observatory: Overall Design and Science Drivers. in JJ Bryant, K Motohara & JR Vernet (eds), Ground-Based and Airborne Instrumentation for Astronomy X., 130960G, Proceedings of SPIE - The International Society for Optical Engineering, vol. 13096, Ground-Based and Airborne Instrumentation for Astronomy X 2024, Yokohama, Japan, 6/16/24. https://doi.org/10.1117/12.3020803

Liger at W. M. Keck Observatory: Overall Design and Science Drivers. / Wright, Shelley A.; Jones, Tucker; Larkin, James et al.
Ground-Based and Airborne Instrumentation for Astronomy X. ed. / Julia J. Bryant; Kentaro Motohara; Joel R. Vernet. 2024. 130960G (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 13096).

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

TY - GEN

T1 - Liger at W. M. Keck Observatory

T2 - Ground-Based and Airborne Instrumentation for Astronomy X 2024

AU - Wright, Shelley A.

AU - Jones, Tucker

AU - Larkin, James

AU - Kupke, Renate

AU - Kassis, Marc

AU - Brown, Aaron

AU - Andersen, David

AU - Armus, Lee

AU - Cale, Bryson

AU - Cosens, Maren

AU - Chu, Devin

AU - Do, Tuan

AU - Fassanacht, Chris

AU - Fisher, Deanne

AU - Fitzgerald, Michael

AU - Ghez, Andrea

AU - Greene, Jenny

AU - Hayashi, Takeru

AU - Hees, Aurélien

AU - Hirtenstein, Jessie

AU - Johnson, Chris

AU - Keane, Jacqueline

AU - Kelly, Patrick

AU - Kirby, Evan

AU - Karalidi, Theodora

AU - Konopacky, Quinn

AU - Kress, Evan

AU - Lu, Jessica

AU - Lyke, Jim

AU - Magnone, Kenneth

AU - Maire, Jérôme

AU - McGurk, Rosalie

AU - Medling, Anne

AU - Millar-Blanchaer, Maxwell

AU - Minor, Quinn

AU - Nash, Reston

AU - Nierenberg, Anna

AU - Reddy, Naveen

AU - Rich, Michael

AU - Ruffio, Jean Baptiste

AU - Rundquist, Nils Erik

AU - Sabhlok, Sanchit

AU - Sand, David

AU - Sanders, Ryan

AU - Sandstrom, Karin

AU - Shapley, Alice

AU - Sohn, Ji Man

AU - Surya, Arun

AU - Treu, Tommaso

AU - Wang, Eric

AU - Warad, Kanaka

AU - Weber, Robert

AU - Wiley, James

AU - Wizinowich, Peter

AU - Wong, Michael H.

AU - Yeh, Sherry

PY - 2024

Y1 - 2024

N2 - Liger is a next-generation near-infrared (0.81-2.45 µm) integral field spectrograph (IFS) and imaging camera for the W. M. Keck Observatory (WMKO) adaptive optics (AO) system. The instrument concept originated by coupling designs from WMKO AO instruments and the future Thirty Meter Telescope IRIS spectrograph. Liger is designed for the Keck I telescope to operate behind the upcoming Keck All-sky Precision Adaptive optics (KAPA) system. The imaging camera sequentially feeds an IFS that makes use of slicer assembly for the coarsest sampling (75 mas and 150 mas per spaxel) and lenslet array (14 mas and 31 mas per spaxel) for diffraction-limited sampling. The imaging camera makes use of off-axis parabolas and a Hawaii-2RG detector to achieve a 14 mas/pixel plate scale and 20.5”×20.5” field of view. The IFS offers a range of spectral resolving power of R=4,000-10,000 and yields large fields of view for an AO-fed IFS. Liger will enable new science by providing enhanced capabilities, including higher spectral resolving power, access to shorter wavelengths, and larger fields of view than any current or planned ground- or space-based IFS system. Liger will be able to unlock previously inaccessible science across a wide range of the cosmos, such as dark matter substructure, supermassive black holes, the Galactic Center, exoplanet atmospheres, and the time-variable Solar System. We present the overall design of the Liger subsystems and review unique science drivers.

AB - Liger is a next-generation near-infrared (0.81-2.45 µm) integral field spectrograph (IFS) and imaging camera for the W. M. Keck Observatory (WMKO) adaptive optics (AO) system. The instrument concept originated by coupling designs from WMKO AO instruments and the future Thirty Meter Telescope IRIS spectrograph. Liger is designed for the Keck I telescope to operate behind the upcoming Keck All-sky Precision Adaptive optics (KAPA) system. The imaging camera sequentially feeds an IFS that makes use of slicer assembly for the coarsest sampling (75 mas and 150 mas per spaxel) and lenslet array (14 mas and 31 mas per spaxel) for diffraction-limited sampling. The imaging camera makes use of off-axis parabolas and a Hawaii-2RG detector to achieve a 14 mas/pixel plate scale and 20.5”×20.5” field of view. The IFS offers a range of spectral resolving power of R=4,000-10,000 and yields large fields of view for an AO-fed IFS. Liger will enable new science by providing enhanced capabilities, including higher spectral resolving power, access to shorter wavelengths, and larger fields of view than any current or planned ground- or space-based IFS system. Liger will be able to unlock previously inaccessible science across a wide range of the cosmos, such as dark matter substructure, supermassive black holes, the Galactic Center, exoplanet atmospheres, and the time-variable Solar System. We present the overall design of the Liger subsystems and review unique science drivers.

KW - Adaptive Optics

KW - Astrometry

KW - Cryogenic

KW - Imager

KW - Integral Field Spectrograph

KW - Near-infrared

KW - Photometry

KW - Spectroscopy

UR - http://www.scopus.com/inward/record.url?scp=85205598251&partnerID=8YFLogxK

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U2 - 10.1117/12.3020803

DO - 10.1117/12.3020803

M3 - Conference contribution

AN - SCOPUS:85205598251

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

BT - Ground-Based and Airborne Instrumentation for Astronomy X

A2 - Bryant, Julia J.

A2 - Motohara, Kentaro

A2 - Vernet, Joel R.

Y2 - 16 June 2024 through 21 June 2024

ER -

Liger at W. M. Keck Observatory: Overall Design and Science Drivers

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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