Minowa, YosukeKoyama, YuseiAkiyama, MasayukiAli, SadmanBando, TakamasaCarter, JoshuaChandler, DavidChou, Chi YiCranney, JesseD'Orgeville, CelineHayano, YutakaHattori, TakashiHaynes, RogerHaynes, DionneDelgado, Angela HernandezHerrald, NicholasHirabayashi, MasayukiKatakura, JunichiKimura, MasahikoKodama, TadayukiKonishi, MasahiroKruse, AndrewRey, Noelia MartinezMorihana, KumikoMorita, MasakiMotohara, KentaroObuchi, YoshiyukiOgane, HajimeOkita, HirofumiOno, YoshitoOya, ShinSato, NaohisaTakagi, YuheiTakami, HidekiTanaka, IchiTanaka, YokoTerao, KokiTokoku, ChihiroUraguchi, FumihiroWang, LuWang, Shiang YuYanagisawa, KenshiYoshida, HiroshigeYoshida, Michitoshi2025-05-232025-05-2397815106751550277-786XORCID:/0000-0002-9710-7933/work/183874101ORCID:/0000-0002-0209-1781/work/183874653ORCID:/0000-0002-7760-7703/work/183874717http://www.scopus.com/inward/record.url?scp=85205570125&partnerID=8YFLogxKhttps://hdl.handle.net/1885/733751024ULTIMATE-Subaru is the next-generation facility instrument program of the Subaru Telescope which will extend the existing Subaru's wide-field survey capability to the near-infrared wavelength. The ULTIMATE-Subaru instrument suite includes Ground-Layer Adaptive Optics (GLAO) and wide-field near-infrared instruments, aiming to provide ∼0.2 arcsec image size at K band (2.2 µm) over 20 arcmin diameter field of view at the Cassegrain focus. The planned first light instrument is a Wide-Field Imager (WFI), which covers a 14 × 14 square arcmin field of view from 0.9 to 2.5 µm in wavelength. GLAO and WFI are currently in the final design phase, aiming to start the commissioning observations at the telescope in 2028. In parallel to the development for ULTIMATE wide-field instruments, there are ongoing activities to develop a narrow-field wide-band spectrograph (NINJA) together with a Laser Tomography AO system (ULTIMATE-START) utilizing the Adaptive Secondary Mirror and the Laser Guide Star Facility being developed for the GLAO system. In this presentation, an overview of the ULTIMATE-SUBARU instruments, their current status, and future prospects will be presented.We appreciate the National Astronomical Observatory of Japan (NAOJ) and the ULTIMATE-Subaru science team, which consists of astronomers not limited to Japan, for financially, technically, and scientifically supporting the ULTIMATE-Subaru project. ULTIMATE-Subaru project is financially supported by the Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT). This work is also supported by the JSPS Core-to-Core Program (grant number: JPJSCCA20210003), International Leading Research (grant number: JP22K21349), and Grant-in-Aid for Scientific Research (grant numbers: JP17H06129, JP21H04997, JP24H00002), and the Australian Government through the Australia-Japan Foundation of the Department of Foreign Affairs and Trade.en© 2024 SPIE.Adaptive OpticsGLAONear-infraredWide field202410.1117/12.301869885205570125