Gemini IRMOS: conceptual optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph for the Gemini telescope

Shaojie Chen; Suresh Sivanandam; Simon Thibault; Denis Brousseau; Scott Chapman; Darren Erickson; Luc Simard; Paul Hickson; Gaetano Sivo

doi:10.1117/12.2311722

9 July 2018 Gemini IRMOS: conceptual optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph for the Gemini telescope

Shaojie Chen, Suresh Sivanandam, Simon Thibault, Denis Brousseau, Scott Chapman, Darren Erickson, Luc Simard, Paul Hickson, Gaetano Sivo

Author Affiliations +

Proceedings Volume 10702, Ground-based and Airborne Instrumentation for Astronomy VII; 107027E (2018) https://doi.org/10.1117/12.2311722
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

We discuss the optical design of an infrared multi-object integral-field spectrograph (IRMOS) that is designed to take advantage of the multi-object adaptive optics corrected field at the Gemini telescope. The IRMOS is designed for the Gemini Telescope, so we call this instrument GIRMOS. The GIRMOS has four identical Integral-Field Spectrographs (IFSes), which employ a unique slicer design to arrange the integral field along a slit to obtain two-dimensional spectroscopy. Each IFS can pick off the individual fields of view of 1.0x1.0”, 2.1x2.1”, 4.2x4.2” over a 2’ diameter fieldof- regard, at the spatial sampling scales of 25mas, 50mas, and 100mas, respectively. Spectral resolutions of R~3000 and 8000 are available in J, H, and K-bands from 1.0 to 2.4μm. The primary design constraints are associated with diffractive effects from the grating and spectrograph camera.

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Shaojie Chen, Suresh Sivanandam, Simon Thibault, Denis Brousseau, Scott Chapman, Darren Erickson, Luc Simard, Paul Hickson, and Gaetano Sivo "Gemini IRMOS: conceptual optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph for the Gemini telescope", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107027E (9 July 2018); https://doi.org/10.1117/12.2311722

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