Maximising the sensitivity of next generation multi-object spectroscopy: system budget development and design optimizations for the Maunakea Spectroscopic Explorer

Alan W. McConnachie; Nicolas Flagey; Kei Szeto; Shan Mignot; Alexis Hill; Pat Hall

doi:10.1117/12.2313785

10 July 2018 Maximising the sensitivity of next generation multi-object spectroscopy: system budget development and design optimizations for the Maunakea Spectroscopic Explorer

Alan W. McConnachie, Nicolas Flagey, Kei Szeto, Shan Mignot, Alexis Hill, Pat Hall

Author Affiliations +

Proceedings Volume 10705, Modeling, Systems Engineering, and Project Management for Astronomy VIII; 1070522 (2018) https://doi.org/10.1117/12.2313785
Event: SPIE Astronomical Telescopes + Instrumentation, 2018, Austin, Texas, United States

Abstract

MSE is an 11.25m telescope with a 1.5 sq.deg. field of view. It can simultaneously obtain 3249 spectra at R = 3000 from 360− 1800nm, and 1083 spectra at R = 40000 in the optical. Absolutely critical to the scientific success of MSE is to efficiently access the faint Universe. Here, we describe the adopted systems engineering methodology to ensure MSE meets the challenging sensitivity requirements, and how these requirements are partitioned across three budgets, relating to the throughput, noise and fiber injection efficiency. We then describe how the sensitivity of MSE as a system was estimated at the end of Conceptual Design Phase, and how this information was used to revisit the system design in order to meet the sensitivity requirements while maintaining the overall architectural concept of the Observatory. Finally, we present the anticipated sensitivity performance of MSE and describe the key science that these capabilities will enable.

Citation Download Citation

Alan W. McConnachie, Nicolas Flagey, Kei Szeto, Shan Mignot, Alexis Hill, and Pat Hall "Maximising the sensitivity of next generation multi-object spectroscopy: system budget development and design optimizations for the Maunakea Spectroscopic Explorer", Proc. SPIE 10705, Modeling, Systems Engineering, and Project Management for Astronomy VIII, 1070522 (10 July 2018); https://doi.org/10.1117/12.2313785

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