Novel gratings for astronomical observations

We introduce novel gratings for next generation instruments of the TMT (Thirty Meter Telescope), the 8.2 m Subaru telescope, other ground-based and space-borne telescopes. The reflector facet transmission (RFT) grating which is a surface relief grating with sawtooth shaped grating lattice of an acut...

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Main Authors Ebizuka, N, Okamoto, T, Takeda, M, Hosobata, T, Yamagata, Y, Sasaki, M, Kamizuka, T, Tanaka, I, Hattori, T, Ozaki, S, Aoki, W
Format Conference Proceeding
LanguageEnglish
Published SPIE 12.07.2019
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Summary:We introduce novel gratings for next generation instruments of the TMT (Thirty Meter Telescope), the 8.2 m Subaru telescope, other ground-based and space-borne telescopes. The reflector facet transmission (RFT) grating which is a surface relief grating with sawtooth shaped grating lattice of an acute vertex angle, is developed for the WFOS of the TMT. The hybrid grism (direct vision grating) for the MOIRCSof the 8.2m Subaru Telescope is developed as a prototype of the RFT grating. The volume binary grating is developed for a high-dispersion echelle grism of the nuMOIRCS as the first light instrument of the ULTIMATE Subaru. We also developing a silicon grism for the MIMIZUKU of the 6.5m telescope of the University of Tokyo Atacama Observatory in Chile and a quasi-Bragg (QB) immersion grating.
Bibliography:Conference Location: Chania, Greece
Conference Date: 2018-10-09|2018-10-12
ISBN:1510630775
9781510630772
ISSN:0277-786X
DOI:10.1117/12.2536144