Gemini Infrared Multi-Object Spectrograph: preliminary design overview

Suresh Sivanandam; Scott Chapman; Darren Erickson; Paul Hickson; Simon Thibault; Marcin Sawicki; Adam Muzzin; Jennifer Dunn; Alison Peck; Scott Roberts; Kim Venn; Gaetano Sivo; Martin Tschimmel; David Henderson; Masen Lamb; Shaojie Chen; Saugata Dutt; Olivier Lardière; André Anthony; Alexis Hill; Denis Brousseau; Tristan Chabot

doi:10.1117/12.2561607

13 December 2020 Gemini Infrared Multi-Object Spectrograph: preliminary design overview

Suresh Sivanandam, Scott Chapman, Darren Erickson, Paul Hickson, Simon Thibault, Marcin Sawicki, Adam Muzzin, Jennifer Dunn, Alison Peck, Scott Roberts, Kim Venn, Gaetano Sivo, Martin Tschimmel, David Henderson, Masen Lamb, Shaojie Chen, Saugata Dutt, Olivier Lardière, André Anthony, Alexis Hill, Denis Brousseau, Tristan Chabot

Author Affiliations +

Proceedings Volume 11447, Ground-based and Airborne Instrumentation for Astronomy VIII; 114471A (2020) https://doi.org/10.1117/12.2561607
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

The Gemini Infrared Multi-Object Spectrograph (GIRMOS) is an adaptive optics-fed multi-object integral field spectrograph with a parallel imaging capability. GIRMOS implements multi-object adaptive optics (MOAO) for each of its spectrographs by taking advantage of the infrastructure offered by Gemini upcoming wide-field AO facility at Manua Kea. The instrument offers the ability to observe four objects simultaneously within the Gemini-North AO (GNAO) system’s field-of-regard or a single object by tiling the four fields that feed light to four separate spectrographs. Each integral field spectrograph has an independent set of selectable spatial scales (0.025", 0.05", and 0.1" /spaxel) and spectral resolution (R 3,000 and 8,000) within an operating band of 0.95 2.4µm. These spatial scales correspond to indvidual spectrograph fields of view of 1x1", 2X2" , and 4x4", respectively. GIRMOS’s imager offers Nyquist sampling of the diffraction limit in H-band over a 85x85" imaging field. The imager can function in a parallel data acquisition mode with just minor vignetting spectroscopic pick- offs when they are deployed.

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Suresh Sivanandam, Scott Chapman, Darren Erickson, Paul Hickson, Simon Thibault, Marcin Sawicki, Adam Muzzin, Jennifer Dunn, Alison Peck, Scott Roberts, Kim Venn, Gaetano Sivo, Martin Tschimmel, David Henderson, Masen Lamb, Shaojie Chen, Saugata Dutt, Olivier Lardière, André Anthony, Alexis Hill, Denis Brousseau, and Tristan Chabot "Gemini Infrared Multi-Object Spectrograph: preliminary design overview", Proc. SPIE 11447, Ground-based and Airborne Instrumentation for Astronomy VIII, 114471A (13 December 2020); https://doi.org/10.1117/12.2561607

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