9 July 2018 Gemini IRMOS: conceptual optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph for the Gemini telescope
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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, Shaojie Chen, Suresh Sivanandam, Suresh Sivanandam, Simon Thibault, Simon Thibault, Denis Brousseau, Denis Brousseau, Scott Chapman, Scott Chapman, Darren Erickson, Darren Erickson, Luc Simard, Luc Simard, Paul Hickson, Paul Hickson, Gaetano Sivo, 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); doi: 10.1117/12.2311722; https://doi.org/10.1117/12.2311722
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