Current status and future plans for the Maunakea Spectroscopic Explorer (MSE)

Simons, Doug; Crampton, D.; Cote, P.; McConnachie, Alan W.; Szeto, Kei; Salmon, Derrick; Devost, D.; Murowinski, Richard

doi:10.1117/12.2056389

Cited by 5 publications

(5 citation statements)

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“…The three maps we use are generated from mock surveys with average sightline spacings of d ⊥ = 2.5, 4, and 6 h −1 Mpc. The smallest sightline separation configuration is similar to the ongoing CLAMATO survey, and the larger separation configurations are similar to what we expect from large-area surveys on 8 -10 m telescopes like the Subaru Prime Focus Spectrograph (PFS; Takada et al 2014) or the Maunakea Spectroscopic Explorer (Simons et al 2014). We refer to these tomographic maps as the hires, midres, and lores flux maps.…”

Section: Finding Voids In Fluxsupporting

confidence: 70%

Finding high-redshift voids using Lyman α forest tomography

Stark

Font-Ribera

White

et al. 2015

Mon. Not. R. Astron. Soc.

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We present a new method of finding cosmic voids using tomographic maps of Lyα forest flux. We identify cosmological voids with radii of 2 -12 h −1 Mpc in a large N-body simulation at z = 2.5, and characterize the signal of the high-redshift voids in density and Lyα forest flux. The void properties are similar to what has been found at lower redshifts, but they are smaller and have steeper radial density profiles. Similarly to what has been found for low-redshift voids, the radial velocity profiles have little scatter and agree very well with the linear theory prediction. We run the same void finder on an ideal Lyα flux field and tomographic reconstructions at various spatial samplings. We compare the tomographic map void catalogs to the density void catalog and find good agreement even with modest-sized voids (r > 6 h −1 Mpc). Using our simple void-finding method, the configuration of the ongoing CLAMATO survey covering 1 deg 2 would provide a sample of about 100 high-redshift voids. We also provide void-finding forecasts for larger area surveys, and discuss how these void samples can be used to test modified gravity models, study high-redshift void galaxies, and to make an Alcock-Paczynski measurement. To aid future work in this area, we provide public access to our simulation products, catalogs, and sample tomographic flux maps.

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Section: Finding Voids In Fluxsupporting

confidence: 70%

Finding high-redshift voids using Lyman α forest tomography

Stark

Font-Ribera

White

et al. 2015

Mon. Not. R. Astron. Soc.

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“…We will primarily focus on three future facilities: the 4-metre Multi-Object Spectroscopic Telescope (4MOST;de Jong et al 2012), the Subaru Prime Focus Spectrograph (PFS; Sugai et al 2012;Takada et al 2014), and the Maunakea Spectroscopic Explorer (MSE; Simons et al 2014;McConnachie et al 2014). Numerous other facilities, both in existence and planned for future construction, have MOS capability and will conduct MOS surveys in the LSST era (see McConnachie et al 2014, for a summary).…”

Section: Insights For Future Mos Surveysmentioning

confidence: 99%

“…This model for MOS surveys is being pioneered by the OzDES survey (Yuan et al 2015), which is obtaining spectra and redshifts for the Dark Energy Survey (DES; Flaugher 2005). Such a strategy will become standard for future facilities with large, rapidly reconfigurable fiber positioners, such as 4MOST (de Jong et al 2012), the Subaru Prime Focus Spectrograph (PFS; Sugai et al 2012;Takada et al 2014), the Dark Energy Spectroscopic Instrument (Aghamousa et al 2016), and the Mauna Kea Spectroscopic Explorer (MSE; Simons et al 2014;McConnachie et al 2014), all of which will conduct numerous parallel spectroscopic programs including some related to dynamic targets discovered by LSST (Tyson 2002;LSST Science Collaboration et al 2009a). …”

Section: Introductionmentioning

confidence: 99%

OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release

Childress

Lidman

Davis

et al. 2017

Monthly Notices of the Royal Astronomical Society

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“…The current design stretches the current manufacturing technologies especially for the disperser and aspherical lenses. In the ongoing design phase, we intend to address the some follow-up issues: (1) The science group to evaluate the scientific impact with lower spectral resolution.…”

Section: Discussionmentioning

confidence: 99%

“…The Maunakea Spectroscopic Explorer (MSE) project will transform the CFHT 3.6m optical telescope to a 10m class dedicated multi-object spectroscopic facility, with an ability to simultaneously measure thousands of objects with three spectral resolution modes respectively low resolution of R≈3,000, moderate resolution of R≈6,000 and high resolution of R≈40,000 [1] [2]. Two identical multi-object high resolution spectrographs (HR) are expected to simultaneously produce 1084 spectrum with high resolution of 40,000 at Blue (401-416nm) and Green (472-489nm) channels, and 20,000 at Red (626-674nm) channel.…”

Section: Introductionmentioning

confidence: 99%

Mauna Kea Spectroscopic Explorer (MSE): a preliminary design of multi-object high resolution spectrograph

Zhang

Zhou

Tang

et al. 2018

Ground-Based and Airborne Instrumentation for Astronomy VII

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The Maunakea Spectroscopic Explorer (MSE) project will transform the CFHT 3.6m optical telescope to a 10m class dedicated multi-object spectroscopic facility, with an ability to measure thousands of objects with three spectral resolution modes respectively low resolution of R≈3,000, moderate resolution of R≈6,000 and high resolution of R≈ 40,000. Two identical multi-object high resolution spectrographs are expected to simultaneously produce 1084 spectra with high resolution of 40,000 at Blue (401-416nm) and Green (472-489nm) channels, and 20,000 at Red (626-674nm) channel. At the Conceptual Design Phase (CoDP), different optical schemes were proposed to meet the challenging requirements, especially a unique design with a novel transmission image slicer array, and another conventional design with oversize Volume Phase Holographic (VPH) gratings. It became clear during the CoDP that both designs presented problems of complexity or feasibility of manufacture, especially high line density disperser (general name for all kinds of grating, grism, prism). At the present, a new design scheme is proposed for investigating the optimal way to reduce technical risk and get more reliable estimation of cost and timescale. It contains new dispersers, F/2 fast collimator and so on. Therein, the disperser takes advantage of a special grism and a prism to reduce line density on grating surface, keep wide opening angle of optical path, and get the similar spectrum layout in all three spectral channels. For the fast collimator, it carefully compares on-axis and off-axis designs in throughput, interface to fiber assembly and technical risks. The current progress is more competitive and credible than the previous design, but it also indicates more challenging work will be done to improve its accessibility in engineering.

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Current status and future plans for the Maunakea Spectroscopic Explorer (MSE)

Cited by 5 publications

References 0 publications

Finding high-redshift voids using Lyman α forest tomography

Finding high-redshift voids using Lyman α forest tomography

OzDES multifibre spectroscopy for the Dark Energy Survey: 3-yr results and first data release

Mauna Kea Spectroscopic Explorer (MSE): a preliminary design of multi-object high resolution spectrograph

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