Gemini IRMOS: preliminary optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph

Shaojie Chen; Denis Brousseau; Olivier Lardière; Suresh Sivanandam; Simon Thibault; Tristan Chabot; Scott Chapman; Darren Erickson; Saugata Dutt; Gaetano Sivo

doi:10.1117/12.2561942

13 December 2020 Gemini IRMOS: preliminary optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph

Shaojie Chen, Denis Brousseau, Olivier Lardière, Suresh Sivanandam, Simon Thibault, Tristan Chabot, Scott Chapman, Darren Erickson, Saugata Dutt, Gaetano Sivo

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Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114471B (2020) https://doi.org/10.1117/12.2561942
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

We discuss the preliminary end-to-end optical design of an infrared multi-object integral-field spectrograph (GIRMOS) that is designed to take advantage of the multi-object adaptive optics corrected field at the Gemini telescope. GIRMOS’s optical design consists of object selection pick-offs, an adaptive optics (AO) system, and four identical Integral-Field Spectrographs (IFSes), which employ an image slicer to arrange the integral field along a slit. Each IFS can pick off the individual FOV of 1.0x1.0”, 2.0x2.0”, 4.0x4.0” over a 2’ diameter field-of-regard, at a spatial sampling of 25mas, 50mas, and 100mas, respectively. The pick-offs can also be configured in close-packed arrangement to image a single field. Spectral resolutions of R~3000 and 8000 are available in Y, J, H, and K-bands from 0.95 to 2.4μm.

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Shaojie Chen, Denis Brousseau, Olivier Lardière, Suresh Sivanandam, Simon Thibault, Tristan Chabot, Scott Chapman, Darren Erickson, Saugata Dutt, and Gaetano Sivo "Gemini IRMOS: preliminary optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114471B (13 December 2020); https://doi.org/10.1117/12.2561942

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