Prime Focus Spectrograph (PFS) for Subaru Telescope: progressing final steps to science operation

Naoyuki Tamura; Kiyoto Yabe; Shintaro Koshida; Yuki Moritani; Masayuki Tanaka; Miho N. Ishigaki; Yuki Ishizuka; Yukiko Kamata; Ali Allaoui; Akira Arai; Stéphane Arnouts; Rudy Barette; Robert H. Barkhouser; Eddie Bergeron; Patrick Blanchard; Neven Caplar; Michael Carle; Pierre-Yves Chabaud; Yin-Chang Chang; Hsin-Yo Chen; Richard C. Y. Chou; Judith G. Cohen; Ricardo Costa; Thibaut Crauchet; Rodorigo P. de Almeida; Antonio C. de Oliveira; Ligia S. de Oliveira; Kjetil Dohlen; Leandro H. dos Santos; László Dobos; Richard S. Ellis; Steve Ertel; Maximilian Fabricius; Décio Ferreira; Hisanori Furusawa; Wilfred T. Gee; Javier Garciá-Carpio; Roman Gerasimov; Mirek Golebiowski; Aidan Gray; James E. Gunn; ChangHoon Hahn; Satoshi Hamano; Randolph P. Hammond; Albert Harding; Takashi Hattori; Kota Hayashi; Wanqiu He; Timothy M. Heckman; Stephen C Hope; Shu-Fu Hsu; Pin-Jie Huang; Marc Jaquet; Eric Jeschke; Christian K. Jespersen; Yipeng Jing; Russell Kackley; Jennifer L. Karr; Satoshi Kawanomoto; Masahiko Kimura; Evan N. Kirby; Michitaro Koike; Eiichiro Komatsu; Yusei Koyama; Vincent Le Brun; Arnaud Le Fur; David Le Mignant; Gerald Lemson; Yen-Ting Lin; Hung-Hsu Ling; Craig P. Loomis; Robert H. Lupton; Fabrice Madec; Danilo Marchesini; Lucas S. Marrara; Dmitry Medvedev; Sogo Mineo; Arik Mitschang; Satoshi Miyazaki; Kumiko Morihana; Takahiro Morishima; Hitoshi Murayama; Graham J. Murray; Sakurako Okamoto; Hirofumi Okita; Masato Onodera; Vera M. Passegger; Joshua Peebles; Paul A. Price; Tae-Soo Pyo; Lucio Ramos; Daniel J. Reiley; Martin Reinecke; Mitsuko Roberts; Josemar A. Rosa; Julien P. Rousselle; Kody H. Rubio; Kiaina Schubert; Michael D. Seiffert; Jared Siegel; Stephen A. Smee; Laerte Sodré Jr.; Michael A. Strauss; Tomomi Sunayama; Christian Surace; Masahiro Takada; Yuhei Takagi; Ichi Tanaka; Yoko Tanaka; Aniruddha R. Thakar; Didier Vibert; Shiang-Yu Wang; Chih-Yi Wen; Suzanne Werner; Matthew Wung; Chi-Hung Yan; Naoki Yasuda; Hiroshige Yoshida

doi:10.1117/12.3015967

15 August 2024 Prime Focus Spectrograph (PFS) for Subaru Telescope: progressing final steps to science operation

Naoyuki Tamura, Kiyoto Yabe, Shintaro Koshida, Yuki Moritani, Masayuki Tanaka, Miho N. Ishigaki, Yuki Ishizuka, Yukiko Kamata, Ali Allaoui, Akira Arai, Stéphane Arnouts, Rudy Barette, Robert H. Barkhouser, Eddie Bergeron, Patrick Blanchard, Neven Caplar, Michael Carle, Pierre-Yves Chabaud, Yin-Chang Chang, Hsin-Yo Chen, Richard C. Y. Chou, Judith G. Cohen, Ricardo Costa, Thibaut Crauchet, Rodorigo P. de Almeida, Antonio C. de Oliveira, Ligia S. de Oliveira, Kjetil Dohlen, Leandro H. dos Santos, László Dobos, Richard S. Ellis, Steve Ertel, Maximilian Fabricius, Décio Ferreira, Hisanori Furusawa, Wilfred T. Gee, Javier Garciá-Carpio, Roman Gerasimov, Mirek Golebiowski, Aidan Gray, James E. Gunn, ChangHoon Hahn, Satoshi Hamano, Randolph P. Hammond, Albert Harding, Takashi Hattori, Kota Hayashi, Wanqiu He, Timothy M. Heckman, Stephen C Hope, Shu-Fu Hsu, Pin-Jie Huang, Marc Jaquet, Eric Jeschke, Christian K. Jespersen, Yipeng Jing, Russell Kackley, Jennifer L. Karr, Satoshi Kawanomoto, Masahiko Kimura, Evan N. Kirby, Michitaro Koike, Eiichiro Komatsu, Yusei Koyama, Vincent Le Brun, Arnaud Le Fur, David Le Mignant, Gerald Lemson, Yen-Ting Lin, Hung-Hsu Ling, Craig P. Loomis, Robert H. Lupton, Fabrice Madec, Danilo Marchesini, Lucas S. Marrara, Dmitry Medvedev, Sogo Mineo, Arik Mitschang, Satoshi Miyazaki, Kumiko Morihana, Takahiro Morishima, Hitoshi Murayama, Graham J. Murray, Sakurako Okamoto, Hirofumi Okita, Masato Onodera, Vera M. Passegger, Joshua Peebles, Paul A. Price, Tae-Soo Pyo, Lucio Ramos, Daniel J. Reiley, Martin Reinecke, Mitsuko Roberts, Josemar A. Rosa, Julien P. Rousselle, Kody H. Rubio, Kiaina Schubert, Michael D. Seiffert, Jared Siegel, Stephen A. Smee, Laerte Sodré Jr., Michael A. Strauss, Tomomi Sunayama, Christian Surace, Masahiro Takada, Yuhei Takagi, Ichi Tanaka, Yoko Tanaka, Aniruddha R. Thakar, Didier Vibert, Shiang-Yu Wang, Chih-Yi Wen, Suzanne Werner, Matthew Wung, Chi-Hung Yan, Naoki Yasuda, Hiroshige Yoshida

Author Affiliations +

Proceedings Volume 13096, Ground-based and Airborne Instrumentation for Astronomy X; 1309605 (2024) https://doi.org/10.1117/12.3015967
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

The instrumentation of the Prime Focus Spectrograph (PFS), a next generation facility instrument on the Subaru telescope, is now in the final phase of its commissioning process and its general, open-use operations for sciences will provisionally start in 2025. The instrument enables simultaneous spectroscopy with 2386 individual fibers distributed over a very wide (∼1.3 degrees in diameter) field of view on the Subaru’s prime focus. The spectra cover a wide range of wavelengths from 380nm to 1260nm in one exposure in the Low-Resolution (LR) mode (while the visible red channel has the Medium-Resolution (MR) mode as well that covers 710−885nm). The system integration activities at the observatory on Maunakea in Hawaii have been continuing since the arrival of the Metrology Camera System in 2018. On-sky engineering tests and observations have also been carried out continually since September 2021 and, despite various difficulties in interlacing commissioning processes with development activities on the schedule and addressing some major issues on hardware and software, the team successfully observed many targeted stars as intended over the entire field of view (Engineering First Light) in September 2022. Then in parallel to the arrival, integration and commissioning of more hardware components, validations and optimizations of the performance and operation of the instrument are ongoing. The accuracy of the fiber positioning process and the speed of the fiber reconfiguration process have been recently confirmed to be ∼ 20−30μm for 95% of allocated fibers, and ∼130 seconds, respectively. While precise quantitative analyses are still in progress, the measured throughput has been confirmed to be consistent with the model where the information from various sub-components and sub-assemblies is integrated. Long integration of relatively faint objects are being taken to validate an expected increase of signal-to-noise ratio as more exposures are taken and co-added without any serious systematic errors from, e.g., sky subtraction process. The PFS science operation will be carried out in a queue mode by default and various developments, implementations and validations have been underway accordingly in parallel to the instrument commissioning activities. Meetings and sessions are arranged continually with the communities of potential PFS users on multiple scales, and discussions are iterated for mutual understanding and possible optimization of the rules and procedures over a wide range of processes such as proposal submission, observation planning, data acquisition and data delivery. The end-to-end processes of queue observations including successive exposures with updated plans based on assessed qualities of the data from past observations are being tested during engineering observations, and further optimizations are being undertaken. In this contribution, a top-level summary of these achievements and ongoing progresses and future perspectives will be provided.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Naoyuki Tamura, Kiyoto Yabe, Shintaro Koshida, Yuki Moritani, Masayuki Tanaka, Miho N. Ishigaki, Yuki Ishizuka, Yukiko Kamata, Ali Allaoui, Akira Arai, Stéphane Arnouts, Rudy Barette, Robert H. Barkhouser, Eddie Bergeron, Patrick Blanchard, Neven Caplar, Michael Carle, Pierre-Yves Chabaud, Yin-Chang Chang, Hsin-Yo Chen, Richard C. Y. Chou, Judith G. Cohen, Ricardo Costa, Thibaut Crauchet, Rodorigo P. de Almeida, Antonio C. de Oliveira, Ligia S. de Oliveira, Kjetil Dohlen, Leandro H. dos Santos, László Dobos, Richard S. Ellis, Steve Ertel, Maximilian Fabricius, Décio Ferreira, Hisanori Furusawa, Wilfred T. Gee, Javier Garciá-Carpio, Roman Gerasimov, Mirek Golebiowski, Aidan Gray, James E. Gunn, ChangHoon Hahn, Satoshi Hamano, Randolph P. Hammond, Albert Harding, Takashi Hattori, Kota Hayashi, Wanqiu He, Timothy M. Heckman, Stephen C Hope, Shu-Fu Hsu, Pin-Jie Huang, Marc Jaquet, Eric Jeschke, Christian K. Jespersen, Yipeng Jing, Russell Kackley, Jennifer L. Karr, Satoshi Kawanomoto, Masahiko Kimura, Evan N. Kirby, Michitaro Koike, Eiichiro Komatsu, Yusei Koyama, Vincent Le Brun, Arnaud Le Fur, David Le Mignant, Gerald Lemson, Yen-Ting Lin, Hung-Hsu Ling, Craig P. Loomis, Robert H. Lupton, Fabrice Madec, Danilo Marchesini, Lucas S. Marrara, Dmitry Medvedev, Sogo Mineo, Arik Mitschang, Satoshi Miyazaki, Kumiko Morihana, Takahiro Morishima, Hitoshi Murayama, Graham J. Murray, Sakurako Okamoto, Hirofumi Okita, Masato Onodera, Vera M. Passegger, Joshua Peebles, Paul A. Price, Tae-Soo Pyo, Lucio Ramos, Daniel J. Reiley, Martin Reinecke, Mitsuko Roberts, Josemar A. Rosa, Julien P. Rousselle, Kody H. Rubio, Kiaina Schubert, Michael D. Seiffert, Jared Siegel, Stephen A. Smee, Laerte Sodré Jr., Michael A. Strauss, Tomomi Sunayama, Christian Surace, Masahiro Takada, Yuhei Takagi, Ichi Tanaka, Yoko Tanaka, Aniruddha R. Thakar, Didier Vibert, Shiang-Yu Wang, Chih-Yi Wen, Suzanne Werner, Matthew Wung, Chi-Hung Yan, Naoki Yasuda, and Hiroshige Yoshida "Prime Focus Spectrograph (PFS) for Subaru Telescope: progressing final steps to science operation", Proc. SPIE 13096, Ground-based and Airborne Instrumentation for Astronomy X, 1309605 (15 August 2024); https://doi.org/10.1117/12.3015967

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