An integral field unit for the planetary camera and spectrograph (ELT-PCS): comparing lenslet and image slicer-based IFUs

R. Elliot Meyer; Matthias Tecza; Niranjan Thatte; Takashi Sukegawa

doi:10.1117/12.3019230

26 August 2024 An integral field unit for the planetary camera and spectrograph (ELT-PCS): comparing lenslet and image slicer-based IFUs

R. Elliot Meyer, Matthias Tecza, Niranjan Thatte, Takashi Sukegawa

Author Affiliations +

Proceedings Volume 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI; 131001O (2024) https://doi.org/10.1117/12.3019230
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

With the ambitious goal of characterizing nearby Earth-like exoplanets, the Planetary Camera and Spectrograph for the Extremely Large Telescope (ELT-PCS) will need to push the boundaries of both high contrast coronagraphic imaging and integral field spectrograph technology. High contrast imaging spectrographs typically employ microlens array-based integral field units (IFU), which provide a large number of spaxels in exchange for short spectra and an inefficient use of detector pixels. In contrast, image slicers provide a high detector use efficiency with a broader spectral bandpass. We report on the progress of a trade study into IFU design choices for ELT-PCS using a modular integral field spectrograph test-bench. At the core of the experiment are two custom-built IFUs: a novel image slicer-based IFU manufactured by Canon Inc. and BIGRE-like microlens array IFU. We provide an overview of the experiment, the individual performances of the two IFUs, and outline future applications of the test-bench for the design of the integral field spectrograph sub-system of ELT-PCS.

Conference Presentation

Citation Download Citation

R. Elliot Meyer, Matthias Tecza, Niranjan Thatte, and Takashi Sukegawa "An integral field unit for the planetary camera and spectrograph (ELT-PCS): comparing lenslet and image slicer-based IFUs", Proc. SPIE 13100, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation VI, 131001O (26 August 2024); https://doi.org/10.1117/12.3019230

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