ULTIMATE-START: Subaru tomography adaptive optics research experiment project overview

Masayuki Akiyama; Yosuke Minowa; Yoshito Ono; Koki Terao; Hajime Ogane; Kaoru Oomoto; Yuta Iizuka; Shin Oya; Etsuko Mieda; Tomoyasu Yamamuro

doi:10.1117/12.2560872

13 December 2020 ULTIMATE-START: Subaru tomography adaptive optics research experiment project overview

Masayuki Akiyama, Yosuke Minowa, Yoshito Ono, Koki Terao, Hajime Ogane, Kaoru Oomoto, Yuta Iizuka, Shin Oya, Etsuko Mieda, Tomoyasu Yamamuro

Author Affiliations +

Proceedings Volume 11448, Adaptive Optics Systems VII; 114481O (2020) https://doi.org/10.1117/12.2560872
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Abstract

ULTIMATE-Subaru Tomography Adaptive optics Research experimenT (ULTIMATE-START) is a laser tomography AO project on the Subaru telescope. The project is planned to achieve high Strehl Ratio AO correction in NIR bands, and moderate AO correction in visible bands above 600nm. An asterism of 4 laser guide stars (LGSs) will be launched from the laser launching telescope behind the secondary mirror. The tomography wavefront sensing unit with four 32$times$32 Shack-Hartmann wavefront sensors will be installed behind the current facility LGS AO system, AO188. The deformable mirror of AO188 will be upgraded to a 64$times$64 element DM. The corrected light will be fed to the optical integral field spectrograph, 3DII, and NIR camera and spectrograph, IRCS, through a beam switching optics for IR-side Nasmyth focus instruments under development. The first light of the laser launching system and wavefront sensing unit is planned in 2021.

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Masayuki Akiyama, Yosuke Minowa, Yoshito Ono, Koki Terao, Hajime Ogane, Kaoru Oomoto, Yuta Iizuka, Shin Oya, Etsuko Mieda, and Tomoyasu Yamamuro "ULTIMATE-START: Subaru tomography adaptive optics research experiment project overview", Proc. SPIE 11448, Adaptive Optics Systems VII, 114481O (13 December 2020); https://doi.org/10.1117/12.2560872

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