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Proceedings Paper • Open Access

Novel gratings for astronomical observations
Author(s): N. Ebizuka; T. Okamoto; M. Takeda; T. Hosobata; Y. Yamagata; M. Sasaki; T. Kamizuka; I. Tanaka; T. Hattori; S. Ozaki; W. Aoki

Paper Abstract

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.

Paper Details

Date Published: 12 July 2019
PDF: 9 pages
Proc. SPIE 11180, International Conference on Space Optics — ICSO 2018, 1118069 (12 July 2019); doi: 10.1117/12.2536144
Show Author Affiliations
N. Ebizuka, RIKEN (Japan)
T. Okamoto, RIKEN (Japan)
M. Takeda, RIKEN (Japan)
T. Hosobata, RIKEN (Japan)
Y. Yamagata, RIKEN (Japan)
M. Sasaki, Toyota Technological Institute (Japan)
T. Kamizuka, The Univ. of Tokyo (Japan)
I. Tanaka, National Astronomical Observatory of Japan (Japan)
T. Hattori, National Astronomical Observatory of Japan (Japan)
S. Ozaki, National Astronomical Observatory of Japan (Japan)
W. Aoki, National Astronomical Observatory of Japan (Japan)

Published in SPIE Proceedings Vol. 11180:
International Conference on Space Optics — ICSO 2018
Zoran Sodnik; Nikos Karafolas; Bruno Cugny, Editor(s)

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