Optimising IFU design for the Planetary Camera and Spectrograph (ELT-PCS): experimental overview and initial characterization

R. Elliot Meyer; Matthias Tecza; Niranjan Thatte; Takashi Sukegawa; Tomonao Nakayasu; Masatsugu Koyama

doi:10.1117/12.2629412

29 August 2022 Optimising IFU design for the Planetary Camera and Spectrograph (ELT-PCS): experimental overview and initial characterization

R. Elliot Meyer, Matthias Tecza, Niranjan Thatte, Takashi Sukegawa, Tomonao Nakayasu, Masatsugu Koyama

Author Affiliations +

Proceedings Volume 12184, Ground-based and Airborne Instrumentation for Astronomy IX; 121843B (2022) https://doi.org/10.1117/12.2629412
Event: SPIE Astronomical Telescopes + Instrumentation, 2022, Montréal, Québec, Canada

Conference Poster

Abstract

The Planetary Camera and Spectrograph (ELT-PCS) will provide an unprecedented combination of high contrast imaging and spectral resolving power to the Extremely Large Telescope (ELT) with the ambitious goal of characterizing nearby Earth-like exoplanets. We present the initial results of a laboratory experiment that aims to compare the performances of both a novel, high contrast image slicer-based integral field unit (IFU) and a traditional lenslet-based IFU for use in ELT-PCS. The slicer-based IFU mirrors are manufactured by Canon Inc. who recently developed a diamond machining technique to achieve an extremely low surface-roughness (≤1.5 nm). The experimental integral field spectrograph (IFS) is modular to operate with both custom IFUs and to ensure that differences in the optical performance are entirely driven by the IFU design. We provide an overview of the individual IFS subsystems, initial optical performance metrics, and outline the future objectives for the experiment.

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R. Elliot Meyer, Matthias Tecza, Niranjan Thatte, Takashi Sukegawa, Tomonao Nakayasu, and Masatsugu Koyama "Optimising IFU design for the Planetary Camera and Spectrograph (ELT-PCS): experimental overview and initial characterization", Proc. SPIE 12184, Ground-based and Airborne Instrumentation for Astronomy IX, 121843B (29 August 2022); https://doi.org/10.1117/12.2629412

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