Exo-NINJA at Subaru: fiber-fed spectro-imaging of exoplanets and circumstellar disks at R~4000

M. El Morsy; J. Lozi; O. Guyon; T. Currie; S. Vievard; J. Bryant; C. Tokoku; V. Deo; K. Ahn; F. Crous; A. Wang; Z. Sathi

doi:10.1117/12.3019179

18 July 2024 Exo-NINJA at Subaru: fiber-fed spectro-imaging of exoplanets and circumstellar disks at R~4000

M. El Morsy, J. Lozi, O. Guyon, T. Currie, S. Vievard, J. Bryant, C. Tokoku, V. Deo, K. Ahn, F. Crous, A. Wang, Z. Sathi

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130966S (2024) https://doi.org/10.1117/12.3019179
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Exo-NINJA will realize nearIR R≈4000 diffraction-limited narrow-field spectro-imaging for characterization of exoplanets and circumstellar disk structures. It uniquely combines mid-R spectroscopy, high throughput, and spatial resolution, in contrast to CHARIS, which does spectro-imaging, and REACH, which is single-point (no spatial resolution). Exo-NINJA’s spectro-imaging at the telescope diffraction limit will characterize exoplanet atmospheres, detect and map (spatially and spectrally) gas accretion on protoplanets, and also detect exoplanets at small angular separation (λ/D) from their host star by spectro-astrometry. Exo-NINJA will link two instruments at the Subaru Telescope using a high-throughput hexagonal multi-mode fiber bundle (hexabundle). The fiber coupling resides between the high contrast imaging system SCExAO, which combines ExAO and coronagraph, and the medium-resolution spectrograph NINJA (R=4000 at JHK bands). Exo-NINJA will provide an end-to-end throughput of 20% compared to the 1.5% obtained with REACH. Exo-NINJA is scheduled for implementation on the Subaru Telescope’s NasIR platform in 2025; we will present a concise overview of its future installation, laboratory tests such as the throughput and focal ratio degradation (FRD) performance of optical fiber imaging hexabundles, in the NIR and the trade-offs for fiber choices for the NINJA-SCExAO hexabundle fiber cable, and the expected on sky performance.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

M. El Morsy, J. Lozi, O. Guyon, T. Currie, S. Vievard, J. Bryant, C. Tokoku, V. Deo, K. Ahn, F. Crous, A. Wang, and Z. Sathi "Exo-NINJA at Subaru: fiber-fed spectro-imaging of exoplanets and circumstellar disks at R~4000", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130966S (18 July 2024); https://doi.org/10.1117/12.3019179

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