Conceptual design of an integral field unit for the Canada France Hawaii telescope

Marc R. Baril; Andrew I. Sheinis; Jennifer Sobeck; Peter Frinchaboy; Benoît Epinat; Kevin K. Ho

doi:10.1117/12.3018448

18 July 2024 Conceptual design of an integral field unit for the Canada France Hawaii telescope

Marc R. Baril, Andrew I. Sheinis, Jennifer Sobeck, Peter Frinchaboy, Benoît Epinat, Kevin K. Ho

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 130969P (2024) https://doi.org/10.1117/12.3018448
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Conference Poster

Abstract

Working in harmony with Wenaokeao, a combination of the ESPaDOnS and SPIROU visible and infrared spectropolarimeters, an IFU at CFHT would complete a spectrographic instrument suite with broad application, welltailored to the rapid follow-up observations of newly discovered multi-messenger targets. The CFHT IFU will leverage the DESI spectrograph design, baselining a single ~500 fiber array feeding one DESI spectrograph, with the possibility of future upgrade to a second identical IFU and spectrograph. The IFU will have a 3' patrol field allowing it to be used simultaneously with Wenaokeao on deep objects requiring long integration times, possibly over repeated visits, over a field subordinate to the primary target defined by the Wenaokeao observations. This paper describes a preliminary concept for the IFU format, the off-axis coma corrector, ADC, and transfer optics needed to efficiently couple light into the spectrograph.

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

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Marc R. Baril, Andrew I. Sheinis, Jennifer Sobeck, Peter Frinchaboy, Benoît Epinat, and Kevin K. Ho "Conceptual design of an integral field unit for the Canada France Hawaii telescope", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 130969P (18 July 2024); https://doi.org/10.1117/12.3018448

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