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Gemini IRMOS: conceptual optical design of a multi-object adaptive optics-fed infrared integral-field spectrograph for the Gemini telescope
Author(s): Shaojie Chen; Suresh Sivanandam; Simon Thibault; Denis Brousseau; Scott Chapman; Darren Erickson; Luc Simard; Paul Hickson; Gaetano Sivo
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Paper 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.

Paper Details

Date Published: 9 July 2018
PDF: 8 pages
Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107027E (9 July 2018); doi: 10.1117/12.2311722
Show Author Affiliations
Shaojie Chen, Univ. of Toronto (Canada)
Suresh Sivanandam, Univ. of Toronto (Canada)
Simon Thibault, Univ. Laval (Canada)
Denis Brousseau, Univ. Laval (Canada)
Scott Chapman, Dalhousie Univ. (Canada)
National Research Council, Herzberg Astronomy and Astrophysics (Canada)
Darren Erickson, NRC - Herzberg Astronomy & Astrophysics (Canada)
Luc Simard, NRC - Herzberg Astronomy & Astrophysics (Canada)
Paul Hickson, The Univ. of British Columbia (Canada)
Gaetano Sivo, Gemini Observatory (Chile)


Published in SPIE Proceedings Vol. 10702:
Ground-based and Airborne Instrumentation for Astronomy VII
Christopher J. Evans; Luc Simard; Hideki Takami, Editor(s)

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