Liger at W.M. Keck Observatory: optical design and alignment strategy for the Liger integral field spectrograph

Renate Kupke; Shelley Wright; Aaron Brown; Maren Cosens; Michael Fitzgerald; Chris Johnson; Tucker Jones; Marc Kassis; Evan Kress; James Larkin; Kenneth Magnone; Jérôme Maire; Rosalie McGurk; Arun Surya; Eric Wang; James Wiley; Sherry Yeh

doi:10.1117/12.3020618

19 July 2024 Liger at W.M. Keck Observatory: optical design and alignment strategy for the Liger integral field spectrograph

Renate Kupke, Shelley Wright, Aaron Brown, Maren Cosens, Michael Fitzgerald, Chris Johnson, Tucker Jones, Marc Kassis, Evan Kress, James Larkin, Kenneth Magnone, Jérôme Maire, Rosalie McGurk, Arun Surya, Eric Wang, James Wiley, Sherry Yeh

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130966M (2024) https://doi.org/10.1117/12.3020618
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Liger, an infrared imager and integral field spectrograph for the W.M. Keck Observatory, is a versatile instrument that is designed to take full advantage of the upgraded Keck All-sky Precision Adaptive optics system (KAPA). Supporting a variety of modes of operation in both spatial sampling and spectral resolution required a complex, multi-channel spectrograph optical design. We present an overview of the Liger spectrograph optical design, along with an alignment strategy based on simulations and prototyping for this cryogenic instrument.

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Renate Kupke, Shelley Wright, Aaron Brown, Maren Cosens, Michael Fitzgerald, Chris Johnson, Tucker Jones, Marc Kassis, Evan Kress, James Larkin, Kenneth Magnone, Jérôme Maire, Rosalie McGurk, Arun Surya, Eric Wang, James Wiley, and Sherry Yeh "Liger at W.M. Keck Observatory: optical design and alignment strategy for the Liger integral field spectrograph", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130966M (19 July 2024); https://doi.org/10.1117/12.3020618

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