9 August 2016 Mauna Kea Spectrographic Explorer (MSE): a conceptual design for multi-object high resolution spectrograph
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Abstract
The Maunakea Spectroscopic Explorer (MSE) project will transform the CFHT 3.6m optical telescope into a 10m class dedicated multi-object spectroscopic facility, with an ability to simultaneously measure thousands of objects with a spectral resolution range spanning 2,000 to 40,000. MSE will develop two spectrographic facilities to meet the science requirements. These are respectively, the Low/Medium Resolution spectrographs (LMRS) and High Resolution spectrographs (HRS). Multi-object high resolution spectrographs with total of 1,156 fibers is a big challenge, one that has never been attempted for a 10m class telescope. To date, most spectral survey facilities work in single order low/medium resolution mode, and only a few Wide Field Spectrographs (WFS) provide a cross-dispersion high resolution mode with a limited number of orders. Nanjing Institute of Astronomical Optics and Technology (NIAOT) propose a conceptual design with the use of novel image slicer arrays and single order immersed Volume Phase Holographic (VPH) grating for the MSE multi-object high resolution spectrographs. The conceptual scheme contains six identical fiber-link spectrographs, each of which simultaneously covers three restricted bands (λ/30, λ/30, λ/15) in the optical regime, with spectral resolution of 40,000 in Blue/Visible bands (400nm / 490nm) and 20,000 in Red band (650nm). The details of the design is presented in this paper.
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Kai Zhang, Kai Zhang, Yongtian Zhu, Yongtian Zhu, Zhongwen Hu, Zhongwen Hu, "Mauna Kea Spectrographic Explorer (MSE): a conceptual design for multi-object high resolution spectrograph", Proc. SPIE 9908, Ground-based and Airborne Instrumentation for Astronomy VI, 99081P (9 August 2016); doi: 10.1117/12.2231935; https://doi.org/10.1117/12.2231935
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