The science calibration challenges of next generation highly multiplexed optical spectroscopy: the case of the Maunakea Spectroscopic Explorer

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

doi:10.1117/12.2313606

Cited by 6 publications

(4 citation statements)

References 17 publications

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“…With respect to our work plan which was presented at the last SPIE conference in 2016, we have made substantial progress: The international design team has completed the enclosure and telescope structure conceptual designs, selected a multiplexing configuration, developed the LMR and HR [16,17] spectrograph designs, and established a fibre testing facility [18] to characterize the fibre transmission system performance. In conjunction, the PO has established the science calibration methodology [19] , system budgets [20] , and observatory operations concept [21,22] . Together, the CoDP work culminated in a successful System level conceptual design review in January 2018.…”

Section: Discussionmentioning

confidence: 99%

Maunakea spectroscopic explorer advancing from conceptual design

Szeto

Simons

Bauman

et al. 2018

Ground-Based and Airborne Telescopes VII

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The Maunakea Spectroscopic Explorer (MSE) project has completed its Conceptual Design Phase. This paper is a status report of the MSE project regarding its technical and programmatic progress. The technical status includes its conceptual design and system performance, and highlights findings and recommendations from the System and various subsystems design reviews. The programmatic status includes the project organization and management plan for the Preliminary Design Phase. In addition, this paper provides the latest information related to the permitting process for Maunakea construction.

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Section: Discussionmentioning

confidence: 99%

Maunakea spectroscopic explorer advancing from conceptual design

Szeto

Simons

Bauman

et al. 2018

Ground-Based and Airborne Telescopes VII

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“…20), the spectral calibration (Ref. 21,22), the throughput optimization (Ref. 23,24), the observing efficiency (Ref.…”

Section: Introductionmentioning

confidence: 99%

Modeling and budgeting fiber injection efficiency for the Maunakea Spectroscopic Explorer (MSE)

Flagey

Szeto

Mignot

et al. 2018

Modeling, Systems Engineering, and Project Management for Astronomy VIII

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The Maunakea Spectroscopic Explorer (MSE) will each year obtain millions of spectra in the optical to nearinfrared, at low (R 3, 000) to high (R 40, 000) spectral resolution by observing >4,000 spectra per pointing via a highly multiplexed fiber-fed system. Key science programs for MSE include black hole reverberation mapping, stellar population analysis of faint galaxies at high redshift, and sub-km/s velocity accuracy for stellar astrophysics.One key metric of the success of MSE will be its survey speed, i.e. how many spectra of good signal-to-noise ratio will MSE be able to obtain every night and every year. The survey speed is directly linked to the allocation efficiency -how many fibers in the focal surface can be allocated to targets -and to the injection efficiencywhat fraction of light from a target can enter the fiber at the focal surface.In this paper we focus on the injection efficiency and how to optimize it to increase the signal-to-noise ratio of targets observed in sky dominated conditions. The injection efficiency depends on the size of the fiber and requires highly precise, repeatable and stable positioning of the fiber in the focal surface. We present the allocation budget used for Conceptual Design Review and the modeling that allows to estimate the injection efficiency, which is just one part necessary to meet the science requirements on sensitivities.

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“…20), the spectral calibration (Ref. 21,22), the throughput optimization (Ref. 23,24), the observing efficiency (Ref.…”

Section: Introductionmentioning

confidence: 99%

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

McConnachie

Flagey²,

Szeto³

et al. 2018

Modeling, Systems Engineering, and Project Management for Astronomy VIII

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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.

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The science calibration challenges of next generation highly multiplexed optical spectroscopy: the case of the Maunakea Spectroscopic Explorer

Cited by 6 publications

References 17 publications

Maunakea spectroscopic explorer advancing from conceptual design

Maunakea spectroscopic explorer advancing from conceptual design

Modeling and budgeting fiber injection efficiency for the Maunakea Spectroscopic Explorer (MSE)

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

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