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11 July 2018 Image slicer module for Wide Field Optical Spectrograph (WFOS)
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Wide-Field Optical Spectrograph (WFOS) is an optical multi-object spectrograph and one of the first-light instruments of Thirty Meter Telescope (TMT). The WFOS development team has studied three new instrument concepts. One is a fiber-based spectrograph, and other one is a spectrograph using image slicers (Slicer-WFOS). The last one is the simple multi-slit spectrograph. Japanese WFOS team has conducted conceptual studies on Slicer-WFOS in collaboration with California Institute of Technology. Slicer-WFOS has only one VPH grating for each red and blue arm. The gratings offer R~1,500 for a simple 0.″75-width slit. The image slicer divides an object image into three slices and the higher spectral resolution of R~4,500 can be achieved using the same grating. In this proceeding paper, we report our design studies on the slicer module.
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Shinobu Ozaki, Satoshi Miyazaki, Toshihiro Tsuzuki, and Jason R. Fucik "Image slicer module for Wide Field Optical Spectrograph (WFOS)", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107028M (11 July 2018);

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