Dr. Julien P. Rousselle Profile

Dr. Julien P. Rousselle

Project director / Instrument Engineer at Subaru Telescope NAOJ

SPIE Involvement:

Author

Area of Expertise:

Very High Energy Astrophysics , optical design , project management , instrumentation for ground and space based telescopes , prototyping

Websites:

Company Website

Publications (24)

Proceedings Article | 15 August 2024 Presentation + Paper

Presentation + Paper

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

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

Proceedings Volume 13096, 1309605 (2024) https://doi.org/10.1117/12.3015967

KEYWORDS: Telescopes, Equipment, Engineering, Cameras, Calibration, Observatories, Stars, Near infrared, Observational astronomy, Spectrographs

Read 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.

Proceedings Article | 19 July 2024 Presentation

Presentation

Instrumentation at the Subaru Telescope

Takashi Hattori, Naoyuki Tamura, Yosuke Minowa, Hirofumi Okita, Julien Rousselle

Proceedings Volume 13096, 1309602 (2024) https://doi.org/10.1117/12.3019200

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Proceedings Article | 18 July 2024 Poster + Paper

Poster + Paper

Prime Focus Spectrograph (PFS) for Subaru Telescope: performance verification of the science-grade fiber optics cable

Shintaro Koshida, Yuki Moritani, Julien Rousselle, Matthew Wung, Hirofumi Okita, Ligia Souza de Oliveira, Décio Ferreira, Antonio Cesar de Oliveira, Graham Murray, Naoyuki Tamura

Proceedings Volume 13096, 130962O (2024) https://doi.org/10.1117/12.3019412

KEYWORDS: Telescopes, Connectors, Transmittance, Spectrographs, Fiber science, Fiber optics, Air temperature, Light sources, Light emitting diodes, Signal intensity

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We present the results of optical performance verification for the Prime Focus Spectrograph (PFS) fiber optics module, so-called “CableBs”, at Subaru Telescope. PFS is the next generation ultra-wide field multi object spectrograph. It employs 2386 fibers of which the fiber tips are placed precisely on the primary focal plane over a field of view of 1.3 degrees in diameter. CableB transfers light from the fiber positioning module, or Prime Focus Instrument, to the spectrographs. PFS utilizes four CableBs and each of them carries just over 600 science grade fibers. We completed installation of all CableBs at the telescope in June 2023 after two-years of intermittent work. The optical performance of each CableB was subsequently assessed, focusing on four areas; continuity, uniformity, throughput, and focal ratio degradation (FRD). For examining continuity, we illuminated one termination of CableB with flat LED panel and observed the transmitted light. We found only one fiber newly broken during shipment from the integration site. We also checked uniformity of the relative intensity of light propagating in each fiber. The whole variations around the average intensities fit in 20% range among fibers in each CableB, which was consistent with the measurement before shipping. Throughput of sampled fibers were measured in a wavelength range from 400 to 1400 nm with commercial spectrometers. The measurement at the telescope and the integration site each showed a throughput of approximately 70%, so both sets of measurements are consistent. Finally, we measured FRD employing the collimated beam method to ensure that CableBs were free from any significant physical stress after the installation. Our FRD measurements were comparable before and after the installation. In addition, a long-term monitoring of over a few months showed FRD remained sufficiently stable for science operations. According to these results, we conclude that the installation of CableBs at Subaru Telescope was successful.

Proceedings Article | 18 July 2024 Poster + Paper

Poster + Paper

Prime Focus Spectrograph (PFS) for Subaru Telescope: integration and test of the last spectrograph modules

Julien Rousselle, Yuki Moritani, Fabrice Madec, Patrick Blanchard, David Le Mignant, Michael Carle, Thibaut Crauchet, Rudy Barette, Shintaro Koshida, Matthew Wung, Kumiko Morihana, Arnaud Le Fur, Craig Loomis, Naoyuki Tamura

Proceedings Volume 13096, 130962L (2024) https://doi.org/10.1117/12.3020408

KEYWORDS: System integration, Temperature control, Cameras, Spectrographs, Near infrared, Telescopes, Vacuum

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Proceedings Article | 18 July 2024 Poster + Paper

Poster + Paper

Prime Focus Spectrograph (PFS) for Subaru Telescope: the optimization of convergence for Cobra positioners

Shiang-Yu Wang, Chi-Hung Yan, Jennifer Karr, Richard C. Chou, Shu-Fu Hsu, James Gunn, Craig Loomis, Robert Lupton, Arnaud Le Fur, Yuki Moritani, Julien Rousselle, Shintaro Koshida, Kumiko Morihana, Satoshi Kawanomoto, Hiroshige Yoshida, Naoyuki Tamura

Proceedings Volume 13096, 130962N (2024) https://doi.org/10.1117/12.3016931

KEYWORDS: Cameras, Telescopes, Spectrographs, Fiber science, Calibration, Engineering, Observatories, Astronomy

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Proceedings Article | 18 July 2024 Poster + Paper

Poster + Paper

Prime Focus Spectrograph (PFS) for Subaru Telescope: spectrograph system final integration and performance at LAM and Subaru

Fabrice Madec, David Le Mignant, Kjetil Dohlen, Rudy Barette, Patrick Blanchard, Jean-Antoine Benedetti, Michael Carle, Thibaut Crauchet, Romain Lhoussaine, Patrick Vors, Marc Jaquet, Naoyuki Tamura, Yuki Moritani, Josh Peebles, Julien Rousselle, Arnaud Le Fur, Craig Loomis, Shintaro Koshida, Vincent Lapere, Marc Dierickx, Emilien Hupel, James Gunn, Mirek Golebiowski, Randolph Hammond, Stephen Hope, Stephen Smee, Robert Barkhouser, Aidan Gray, Paul Price, Robert Lupton, Antonio Cesar de Oliveira, Ligia Souza de Oliveira, Graham Murray, Stéphanie Chatelain, Jean-Baptiste Abele

Proceedings Volume 13096, 130962P (2024) https://doi.org/10.1117/12.3019805

KEYWORDS: Cameras, Spectrographs, Sensors, Telescopes, Transportation, Optical components, Near infrared, Diffusion, Spectral resolution, Integration, Testing and analysis

Read Abstract +

The Spectrograph System (SpS) of Subaru Prime Focus Spectrograph is fed by 2400 fibers and consists of four identical spectrograph modules with 4 arms and 600 fibers each. This paper outlines the overall integration process for the spectrograph module series as completed at the Subaru Telescope. Many partners from the Subaru PFS Collaboration and industry contributed to this large multi-object spectrograph system. The initial integration of the so-called "one-channel prototype" began in 2015. The first spectrograph module was delivered to Subaru in 2019, and the fourth module was delivered in late 2023, with delays due to both technical difficulties and scheduling challenges, including the impact of COVID-19 on the large PFS spectrograph system collaboration. The integration and validation of each spectrograph module were performed at the Laboratoire d’Astrophysique de Marseille (LAM) prior to delivery and full integration at the Subaru Telescope. First, we briefly review the opto-mechanical design and development strategy for the SpS. We present the integration and testing procedures developed for this mini-series of four spectrograph modules. Several specific AIT tools were innovative and key to the process, and are worth reporting, including the software tools required for functional tests, housekeeping, and environment monitoring during integration, analysis of dimensional metrology, test and verification of optical alignment, and overall performance assessment. Specific processes were also developed for analyzing and resolving anomalies and issues encountered. We detail the strategies developed to resolve technical issues: thermal and vacuum performance; dimensional and optical metrology processes to correct for focus/tilt anomalies observed at the focal plane; handling, alignment, and optical testing of large optics such as the 340x340x20mm Volume Phase Holographic Grating (VPHG). We briefly report on a grating orientation issue discovered before the delivery of the last module, which is reported elsewhere. We quickly report the integration logistics: managing the shipping process, custom, and deliveries of many parts and modules among partners since 2014, and the final delivery and installation at the Subaru Telescope at the summit of Mauna Kea in Hawai`i in 2019, 2022, and 2023. We then dedicate a full section to the optical and thermal performance for the largest 8m-class multi-object spectrograph: the spectral channels and camera alignment performance results and the detailed optical performance of the four spectrograph modules (extracted from internal extended performance reports).

Proceedings Article | 18 July 2024 Poster + Paper

Poster + Paper

Prime Focus Spectrograph (PFS) for Subaru Telescope: recovery of the VPHG efficiency

Kjetil Dohlen, Fabrice Madec, James Gunn, Yuki Moritani, Mirek Golebiowski, Randolph Hammond, Patrick Blanchard, Michael Carle, Aidan Gray, Robert Barkhouser, Vincent Lapere, Marc Jaquet, Shintaro Koshida, Robert Lupton, David Le Mignant, Julien Rousselle, Stephen Smee, Kiyoto Yabe, Naoyuki Tamura

Proceedings Volume 13096, 130962K (2024) https://doi.org/10.1117/12.3020245

KEYWORDS: Spectrographs, Equipment, Telescopes, Optical gratings, Manufacturing, Diffraction gratings, Design, Prisms, Diffraction, Optical components

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

Instrumentation at the Subaru Telescope

Takashi Hattori, Yosuke Minowa, Hirofumi Okita, Julien Rousselle, Michitoshi Yoshida

Proceedings Volume 12184, 1218402 (2022) https://doi.org/10.1117/12.2629780

KEYWORDS: Telescopes, Spectrographs, Adaptive optics, Imaging systems, Cameras, Near infrared, Laser guide stars, Astronomical imaging, Wavefront sensors, Astronomy

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Proceedings Article | 29 August 2022 Poster + Paper

Poster + Paper

Prime focus spectrograph (PFS) for the Subaru Telescope: the prime focus instrument

Shiang-Yu Wang, Masahiko Kimura, Chi-Hung Yan, Yin-Chang Chang, Shu-Fu Hsu, Jennifer Karr, Hsin-Yo Chen, Pin-Jie Huang, Chih-Yi Wen, Richard C. Y. Chou, Hung-Hsu Ling, Naoyuki Tamura, Yuki Moritani, Julien Rousselle, Hiroshige Yoshida, Shintaro Koshida, Naruhisa Takato, Dan Reiley, Mitsuko Roberts, James Gunn, Craig Loomis, Robert Lupton, Neven Caplar, Hassan Siddiqui, Décio Ferreira, Leandro Henrique dos Santos, Ligia Souza Oliveira, Antonio Cesar de Oliveira, Lucas Souza Marrara, Maximilian Fabricius, Graham Murray

Proceedings Volume 12184, 121846R (2022) https://doi.org/10.1117/12.2629098

KEYWORDS: Calibration, Telescopes, Optical fibers, Spectrographs, Cameras, Control systems, Astronomy, Signal processing, Glasses, Electronics

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

Prime Focus Spectrograph (PFS) for the Subaru Telescope: its start of the last development phase

Naoyuki Tamura, Yuki Moritani, Kiyoto Yabe, Yuki Ishizuka, Yukiko Kamata, Ali Allaoui, Akira Arai, Stéphane Arnouts, Robert Barkhouser, Rudy Barette, Patrick Blanchard, Eddie Bergeron, Neven Caplar, Pierre-Yves Chabaud, Yin-Chang Chang, Hsin-Yo Chen, Chueh-Yi Chou, You-Hua Chu, Judith Cohen, Richardo da Costa, Thibaut Crauchet, Rodrigo de Almeida, Antonio de Oliveira, Ligia de Oliveira, Kjetil Dohlen, Leandro dos Santos, Richard Ellis, Maximilian Fabricius, Décio Ferreira, Hisanori Furusawa, Jahmour Givans, Javier Garciá-Carpio, Mirek Golebiowski, Aidan Gray, James Gunn, Satoshi Hamano, Randolph Hammond, Albert Harding, Kota Hayashi, Wanqiu He, Timothy Heckman, Stephen Hope, Shu-Fu Hsu, Yen-Shan Hu, Pin Jie Huang, Miho Ishigaki, Eric Jeschke, Yipeng Jing, Erin Kado-Fong, Jennifer Karr, Satoshi Kawanomoto, Masahiko Kimura, Michitaro Koike, Eiichiro Komatsu, Shintaro Koshida, Vincent Le Brun, Arnaud Le Fur, David Le Mignant, Romain Lhoussaine, Yen-Ting Lin, Hung-Hsu Ling, Craig Loomis, Robert Lupton, Fabrice Madec, Danilo Marchesini, Edouard Marguerite, Lucas Marrara, Dmitry Medvedev, Sogo Mineo, Satoshi Miyazaki, Takahiro Morishima, Kazumi Murata, Hitoshi Murayama, Graham Murray, Hirofumi Okita, Masato Onodera, Joshua Peebles, Paul Price, Tae-Soo Pyo, Lucio Ramos, Daniel Reiley, Martin Reinecke, Mitsuko Roberts, Josimar Rosa, Julien Rousselle, Mira Sarkis, Michael Seiffert, Kiaina Schubert, Hassan Siddiqui, Stephen Smee, Laerte Sodré, Michael Strauss, Christian Surace, Manuchehr Taghizadeh Popp, Philip Tait, Masahiro Takada, Yuhei Takagi, Masayuki Tanaka, Yoko Tanaka, Aniruddha Thakar, Didier Vibert, Shiang-Yu Wang, Chih-Yi Wen, Suzanne Werner, Matthew Wung, Gerald Lemson, Arik Mitschang, Naoki Yasuda, Hiroshige Yoshida, Chi-Hung Yan, Michitoshi Yoshida, Takuji Yamashita

Proceedings Volume 12184, 1218410 (2022) https://doi.org/10.1117/12.2628152

KEYWORDS: Telescopes, Cameras, Spectrographs, Optical fibers, Observatories, Sensors, Astronomy, Software development, Near infrared, Connectors

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Proceedings Article | 29 August 2022 Presentation

Presentation

Prototype Schwarzschild-Couder Telescope for the medium-sized telescope of Cherenkov Telescope Array Observatory

Vladimir Vassiliev, C. Adams, G. Ambrosi, M. Ambrosio, C. Aramo, P. Batista, W. Benbow, B. Bertucci, E. Bissaldi, M. Bitossi, A. Boiano, C. Bonavolontà, R. Bose, A. Brill, A. Brown, J. Buckley, R. Cameron, R. Canestrari, M. Capasso, M. Caprai, C. Covault, D. De Paoli, L. Di Venere, M. Errando, S. Fegan, Q. Feng, E. Fiandrini, A. Furniss, A. Gent, N. Giglietto, F. Giordano, E. Giro, R. Halliday, O. Hervet, J. Holder, T. Humensky, S. Incardona, M. Ionica, W. Jin, D. Kieda, S. Loporchio, G. Marsella, V. Masone, K. Meagher, T. Meures, B. Mode, I. Mognet, R. Mukherjee, D. Nieto, A. Okumura, N. Otte, F. Pantaleo, R. Paoletti, G. Pareschi, F. Di Pierro, E. Pueschel, D. Ribeiro, L. Riitano, E. Roache, D. Ross, J. Rousselle, A. Rugliancich, M. Santander, L. Stiaccini, H. Tajima, L. Taylor, L. Tosti, G. Tripodo, V. Vagelli, M. Valentino, J. Vandenbroucke, R. White, D. Williams, A. Zink

Proceedings Volume 12182, 121820N (2022) https://doi.org/10.1117/12.2630604

KEYWORDS: Atmospheric Cherenkov telescopes, Telescopes, Observatories, Prototyping, Sensors, Mirrors, Cameras, Silicon photomultipliers, Image segmentation, Image resolution

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SPIE Journal Paper | 15 February 2022

Design and performance of the prototype Schwarzschild-Couder telescope camera

Colin Adams, Giovanni Ambrosi, Michelangelo Ambrosio, Carla Aramo, Timothy Arlen, Wystan Benbow, Bruna Bertucci, Elisabetta Bissaldi, Jonathan Biteau, Massimiliano Bitossi, Alfonso Boiano, Carmela Bonavolontà, Richard Bose, Aurelien Bouvier, Mario Buscemi, Aryeh Brill, Anthony Brown, James Buckley, Rodolfo Canestrari, Massimo Capasso, Mirco Caprai, Paolo Coppi, Corbin Covault, Davide De Paoli, Leonardo Di Venere, Manel Errando, Stephen Fegan, Qi Feng, Emanuele Fiandrini, Amy Furniss, Markus Garczarczyk, Alasdair Gent, Nicola Giglietto, Francesco Giordano, Enrico Giro, Robert Halliday, Olivier Hervet, Gareth Hughes, Simone Incardona, Thomas Humensky, Maria Ionica, Weidong Jin, Caitlin Johnson, David Kieda, Frank Krennrich, Andrey Kuznetsov, Jon Lapington, Francesco Licciulli, Serena Loporchio, Giovanni Marsella, Vincenzo Masone, Kevin Meagher, Thomas Meures, Brent A. Mode, Samuel A. Mognet, Reshmi Mukherjee, Akira Okumura, Francesca Pantaleo, Riccardo Paoletti, Federico Di Pierro, Deivid Ribeiro, Luca Riitano, Emmet Roache, Duncan Ross, Julien Rousselle, Andrea Rugliancich, Marcos Santander, Michael Schneider, Harm Schoorlemmer, Ruo-Yu Shang, Brandon Stevenson, Leonardo Stiaccini, Hiroyasu Tajima, Leslie Taylor, Julian Thornhill, Luca Tosti, Giovanni Tripodo, Valerio Vagelli, Massimo Valentino, Justin Vandenbroucke, Vladimir Vassiliev, Scott Wakely, Jason Watson, Richard White, Patrick Wilcox, David Williams, Matthew Wood, Peter Yu, Adrian Zink

JATIS, Vol. 8, Issue 01, 014007, (February 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.1.014007

KEYWORDS: Cameras, Telescopes, Prototyping, Optical instrument design, Light emitting diodes, Camera shutters, Sensors, Capacitors, Imaging systems, Atmospheric Cherenkov telescopes

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Proceedings Article | 24 August 2021 Presentation + Paper

Presentation + Paper

Technical and scientific performance of the prototype Schwarzschild-Couder telescope for CTA

C. Adams, G. Ambrosi, M. Ambrosio, C. Aramo, P. Batista, W. Benbow, B. Bertucci, E. Bissaldi, M. Bitossi, A. Boiano, C. Bonavolontà, R. Bose, A. Brill, A. Brown, J. Buckley, R. Canestrari, M. Capasso, M. Caprai, C. Covault, D. De Paoli, L. Di Venere, M. Errando, S. Fegan, Q. Feng, E. Fiandrini, A. Furniss, A. Gent, N. Giglietto, F. Giordano, E. Giro, R. Halliday, O. Hervet, J. Holder, T. Humensky, S. Incardona, M. Ionica, W. Jin, D. Kieda, F. Licciulli, S. Loporchio, G. Marsella, V. Masone, K. Meagher, T. Meures, B. A. W. Mode, S. A. I. Mognet, R. Mukherjee, D. Nieto, A. Okumura, N. Otte, F. Pantaleo, R. Paoletti, G. Pareschi, F. Di Pierro, E. Pueschel, D. Ribeiro, L. Riitano, E. Roache, D. Ross, J. Rousselle, A. Rugliancich, M. Santander, R. Shang, L. Stiaccini, H. Tajima, L. Taylor, L. Tosti, G. Tovmassian, G. Tripodo, V. Vagelli, M. Valentino, J. J. Vanderbrouke, V. Vassiliev, J. Watson, R. White, D. Williams, P. Yu, A. Zink

Proceedings Volume 11820, 118200E (2021) https://doi.org/10.1117/12.2594580

KEYWORDS: Cameras, Atmospheric Cherenkov telescopes, Telescopes, Physics, Point spread functions, Prototyping, Stars, Sensors, Gamma radiation, Astronomy

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Proceedings Article | 10 March 2021 Presentation + Paper

Presentation + Paper

Prime Focus Spectrograph (PFS) for the Subaru telescope: a next-generation facility instrument of the Subaru telescope has started coming

Naoyuki Tamura, Naruhisa Takato, Yuki Moritani, Kiyoto Yabe, Yuki Ishizuka, Yukiko Kamata, Ali Allaoui, Stéphane Arnouts, Robert Barkhouser, Philippe Balard, Rudy Barette, Mohamed Belhadi, Jill Burnham, Neven Caplar, Michael Carr, Pierre-Yves Chabaud, Yin-Chang Chang, Hsin-Yo Chen, Richard Chou, You-Hua Chu, Judith Cohen, Ricardo Costa, Thibaut Crauchet, Rodrigo de Almeida, Antonio de Oliveira, Ligia de Oliveira, Kjetil Dohlen, Leandro dos Santos, Richard Ellis, Maximilian Fabricius, Décio Ferreira, Hisanori Furusawa, Javier Garcia-Carpio, Mirek Golebiowski, Aidan Gray, James Gunn, Albert Harding, Randolph Hammond, Murdock Hart, Timothy Heckman, Stephen Hope, Shu-Fu Hsu, Yen-Sang Hu, Pin-Jie Huang, Marc Jaquet, Eric Jeschke, Yipeng Jing, Erin Kado-Fong, Jennifer Karr, Satoshi Kawanomoto, Masahiko Kimura, Michitaro Koike, Eiichiro Komatsu, Shintaro Koshida, Vincent Le Brun, Olivier Le Fèvre, Arnaud Le Fur, David Le Mignant, Hung-Hsu Ling, Craig Loomis, Robert Lupton, Fabrice Madec, Danilo Marchesini, Edouard Marguerite, Lucas Marrara, Dmitry Medvedev, Sogo Mineo, Hitoshi Murayama, Graham Murray, Youichi Ohyama, Hirofumi Okita, Yuki Okura, Masato Onodera, Joseph Orndorff, Sandrine Pascal, Joshua Peebles, Lucio Ramos, Daniel Reiley, Martin Reinecke, Mitsuko Roberts, Josimar Rosa, Julien Rousselle, Mira Sarkis, Alain Schmitt, Michael Seiffert, Kiaina Schubert, Hassan Siddiqui, Stephen Smee, Laerte Sodré, Michael Strauss, Christian Surace, Manuchehr Taghizadeh-Popp, Philip Tait, Masahiro Takada, Satoshi Takita, Tomonori Tamura, Masayuki Tanaka, Yoko Tanaka, Aniruddha Thakar, Didier Vibert, Shiang-Yu Wang, Chih-Yi Wen, Suzanne Werner, Matthew Wung, Yoshihiko Yamada, Takuji Yamashita, Chi-Hung Yan, Naoki Yasuda, Hiroshige Yoshida, Michitoshi Yoshida

Proceedings Volume 11447, 1144713 (2021) https://doi.org/10.1117/12.2562206

KEYWORDS: Spectrographs, Telescopes, Cameras, Imaging systems, Multiplexing, Optical fibers, Hardware testing, Metrology, Observatories, Visible radiation

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Proceedings Article | 14 December 2020 Poster + Paper

Poster + Paper

Alignment of the optical system of the 9.7-m prototype Schwarzchild-Coulder Telescope

C. Adams, R. Alfaro, G. Ambrosi, M. Ambrosio, C. Aramo, W. Benbow, B. Bertucci, E. Bissaldi, M. Bitossi, A. Boiano, C. Bonavolontá, R. Bose, A. Brill, J. Buckley, K. Byrum, R. A. Cameron, M. Capasso, M. Caprai, C. Covault, L. Di Venere, S. Fegan, Q. Feng, E. Fiandrini, A. Furniss, M. Garczarczyk, F. Garfias, A. Gent, N. Giglietto, F. Giordano, M. González, R. Halliday, T. B. Humensky, D. Ribeiro, O. Hervet, G. Hughes, M. Ionica, A. Iriarte, W. Jin, P. Kaaret, D. Kieda, B. Kim, M. Limon, S. Loporchio, T. Meures, B. A. Mode, R. Mukherjee, D. Nieto, A. Okumura, N. Otte, N. La Palombara, F. R. Pantaleo, R. Paoletti, G. Pareschi, A. Petrashyk, J. Powell, E. Roache, J. Rousselle, A. Rugliancich, J. Ruíz-Díaz-Soto, M. Santander, S. Schlenstedt, S. Scuderi, R. Shang, G. Sironi, B. Stevenson, L. Stiaccini, L. Taylor, L. Tosti, G. Tovmassian, V. Vagelli, M. Valentino, J. Vandenbroucke, V. Vassiliev, S. Wakely, P. Wilcox, D. Williams, P. Yu

Proceedings Volume 11445, 114456A (2020) https://doi.org/10.1117/12.2564653

KEYWORDS: Atmospheric Cherenkov telescopes, Telescopes, Optical alignment, Optical instrument design, Gamma radiation, Point spread functions, Cameras, Silicon photomultipliers, Mirrors, Alignment procedures

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Proceedings Article | 20 August 2020 Presentation + Paper

Presentation + Paper

Verification of the optical system of the 9.7-m prototype Schwarzschild-Couder Telescope

C. Adams, R. Alfaro, G. Ambrosi, M. Ambrosio, C. Aramo, W. Benbow, B. Bertucci, E. Bissaldi, M. Bitossi, A. Boiano, C. Bonavolontà, R. Bose, A. Brill, J. Buckley, K. Byrum, R. Cameron, M. Capasso, M. Caprai, C. Covault, L. Di Venere, S. Fegan, Q. Feng, E. Fiandrini, A. Furniss, M. Garczarczyk, F. Garfias, A. Gent, N. Giglietto, F. Giordano, M. González, R. Halliday, O. Hervet, G. Hughes, T. Humensky, M. Ionica, A. Iriarte, W. Jin, P. Kaarat, D. Kieda, B. Kim, F. Licciulli, M. Limon, S. Loporchio, V. Masone, T. Meures, B. A. W. Mode, R. Mukherjee, D. Nieto, A. Okumura, N. Otte, N. La Palombara, F. Pantaleo, R. Paoletti, G. Pareschi, A. Petrashyk, J. Powell, K. Powell, D. Ribeiro, E. Roache, J. Rousselle, A. Rugliancich, J. Ruíz-Díaz-Soto, M. Santander, S. Schlenstedt, S. Scuderi, R. Shang, G. Sironi, B. Stevenson, L. Stiaccini, L. Taylor, L. Tosti, G. Tovmassian, V. Vagelli, M. Valentino, J. Vandenbroucke, V. Vassiliev, S. Wakely, P. Wilcox, D. Williams, P. Yu

Proceedings Volume 11488, 1148805 (2020) https://doi.org/10.1117/12.2568134

KEYWORDS: Mirrors, Cameras, Stars, Telescopes, Optical alignment, Atmospheric Cherenkov telescopes, Point spread functions

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Proceedings Article | 24 October 2019 Paper

Paper

Characterization and assembly of near-ultraviolet SiPMs for the Schwarzschild-Couder medium-size telescope proposed for the CTA Observatory

C. Adams, G. Ambrosi, M. Ambrosio, C. Aramo, W. Benbow, B. Bertucci, E. Bissaldi, M. Bitossi, A. Boiano, C. Bonavolontà, R. Bose, A. Brill, J. Buckley, M. Caprai, C. Covault, L. Di Venere, Q. Feng, E. Fiandrini, A. Gent, N. Giglietto, F. Giordano, R. Halliday, O. Hervet, G. Hughes, T. Humensky, M. Ionica, W. Jin, P. Kaaret, D. Kieda, B. Kim, F. Licciulli, S. Loporchio, V. Masone, T. Meures, B. A. W. Mode, R. Mukherjee, A. Okumura, N. Otte, F. R. Pantaleo, R. Paoletti, A. Petrashyk, J. Powell, K. Powell, D. Ribeiro, J. Rousselle, A. Rugliancich, M. Santander, R. Shang, B. Stevenson, L. Stiaccini, L. Taylor, L. Tosti, V. Vagelli, M. Valentino, J. Vandenbroucke, V. Vassiliev, P. Wilcox, D. Williams

Proceedings Volume 11114, 111140D (2019) https://doi.org/10.1117/12.2530617

KEYWORDS: Cameras, Atmospheric Cherenkov telescopes, Telescopes, Physics, Observatories, Matrices, Near ultraviolet, Optical fabrication, Astronomy

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Proceedings Article | 27 July 2018 Presentation + Paper

Presentation + Paper

Prime Focus Spectrograph (PFS) for the Subaru telescope: ongoing integration and future plans

Naoyuki Tamura, Naruhisa Takato, Atsushi Shimono, Yuki Moritani, Kiyoto Yabe, Yuki Ishizuka, Yukiko Kamata, Akitoshi Ueda, Hrand Aghazarian, Stephané Arnouts, Robert Barkhouser, Philippe Balard, Rudy Barette, Mohamed Belhadi, Jill Burnham, Neven Caplar, Michael Carr, Pierre-Yves Chabaud, Yin-Chang Chang, Hsin-Yo Chen, Chueh-Yi Chou, You-Hua Chu, Judith Cohen, Rodorigo de Almeida, Antonio de Oliveira, Lígia de Oliveira, Richard Dekany, Kjetil Dohlen, Jesulino dos Santos, Leandro dos Santos, Richard Ellis, Maximilian Fabricius, Decio Ferreira, Hisanori Furusawa, Javier Garcia-Carpio, Mirek Golebiowski, Johannes Gross, James Gunn, Randolph Hammond, Albert Harding, Murdock Hart, Timothy Heckman, Paul Ho, Stephen Hope, David Hover, Shu-Fu Hsu, Yen-Shan Hu, Ping-Jie Huang, Sara Jamal, Marc Jaquet, Eric Jeschke, Yipeng Jing, Erin Kado-Fong, Jeniffer Karr, Masahiko Kimura, Matthew King, Michitaro Koike, Eiichiro Komatsu, Vincent Le Brun, Olivier Le Fèvre, Arnaud Le Fur, David Le Mignant, Hung-Hsu Ling, Craig Loomis, Robert Lupton, Fabrice Madec, Peter Mao, Danilo Marchesini, Lucas Marrara, Dmitry Medvedev, Sogo Mineo, Yosuke Minowa, Hitoshi Murayama, Graham Murray, Youichi Ohyama, Masato Onodera, Joseph Orndorff, Sandrine Pascal, Josh Peebles, Guillaume Pernot, Raphael Pourcelot, Daniel Reiley, Martin Reinecke, Mitsuko Roberts, Josimar Rosa, Julien Rousselle, Alain Schmitt, Mark Schwochert, Micheal Seiffert, Hassan Siddiqui, Stephen Smee, Laerte Sodré, Aaron Steinkraus, Michael Strauss, Christian Surace, Philip Tait, Masahiro Takada, Tomonori Tamura, Masayuki Tanaka, Yoko Tanaka, Aniruddha Thakar, Orlando Verducci, Didier Vibert, Shiang-Yu Wang, Zuo Wang, Chih-Yi Wen, Suzanne Werner, Yoshihiko Yamada, Chi-Hung Yan, Naoki Yasuda, Hiroshige Yoshida, Michitoshi Yoshida

Proceedings Volume 10702, 107021C (2018) https://doi.org/10.1117/12.2311871

KEYWORDS: Telescopes, Spectrographs, Optical fibers, Astronomy, Observatories, Cameras, Imaging systems, Astronomical telescopes, Physics, Prototyping

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Proceedings Article | 4 September 2015 Paper

Paper

Toward the construction of a medium size prototype Schwarzschild-Couder telescope for CTA

J. Rousselle, K. Byrum, R. Cameron, V. Connaughton, M. Errando, S. Griffiths, V. Guarino, T. B. Humensky, P. Jenke, P. Kaaret, D. Kieda, M. Limon, I. Mognet, R. Mukherjee, D. Nieto, A. Okumura, A. Peck, A. Petrashyk, D. Ribeiro, B. Stevenson, V. Vassiliev, P. Yu

Proceedings Volume 9603, 960305 (2015) https://doi.org/10.1117/12.2188381

KEYWORDS: Mirrors, Telescopes, Atmospheric Cherenkov telescopes, Optical alignment, Cameras, Actuators, Prototyping, Glasses, Computer aided design, Sensors

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Proceedings Article | 26 September 2013 Paper

Paper

Status of the technologies for the production of the Cherenkov Telescope Array (CTA) mirrors

G. Pareschi, T. Armstrong, H. Baba, J. Bähr, A. Bonardi, G. Bonnoli, P. Brun, R. Canestrari, P. Chadwick, M. Chikawa, P.-H. Carton, V. de Souza, J. Dipold, M. Doro, D. Durand, M. Dyrda, A. Förster, M. Garczarczyk, E. Giro, J.-F. Glicenstein, Y. Hanabata, M. Hayashida, M. Hrabovski, C. Jeanney, M. Kagaya, H. Katagiri, L. Lessio, D. Mandat, M. Mariotti, C. Medina, J. Michalowski, P. Micolon, D. Nakajima, J. Niemiec, A. Nozato, M. Palatka, M. Pech, B. Peyaud, G. Pühlhofer, M. Rataj, G. Rodeghiero, G. Rojas, J. Rousselle, R. Sakonaka, P. Schovanek, K. Seweryn, C. Schultz, S. Shu, F. Stinzing, M. Stodulski, M. Teshima, P. Travniczek, C. van Eldik, V. Vassiliev, Ł Wiśniewski, A. Wörnlein, T. Yoshida

Proceedings Volume 8861, 886103 (2013) https://doi.org/10.1117/12.2025476

KEYWORDS: Mirrors, Atmospheric Cherenkov telescopes, Glasses, Telescopes, Reflectivity, Aluminum, Prototyping, Polishing, Point spread functions, Composites

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Proceedings Article | 26 September 2013 Paper

Paper

Schwarzschild-Couder telescope for the Cherenkov Telescope Array: development of the optical system

J. Rousselle, V. Connaughton, M. Errando, T. Humensky, R. Mukherjee, D. Nieto, A. Okumura, V. Vassiliev

Proceedings Volume 8861, 886104 (2013) https://doi.org/10.1117/12.2028873

KEYWORDS: Mirrors, Telescopes, Atmospheric Cherenkov telescopes, Optical alignment, Prototyping, Point spread functions, Sensors, Actuators, Tolerancing, Observatories

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Proceedings Article | 30 July 2010 Paper

Paper

Development of efficient Laue lenses: experimental results and projects

Nicolas Barrière, John Tomsick, Steven Boggs, Julien Rousselle, Peter von Ballmoos

Proceedings Volume 7732, 773226 (2010) https://doi.org/10.1117/12.857813

KEYWORDS: Crystals, Prototyping, Space telescopes, Telescopes, Lenses, Gamma radiation, Diffraction, Laser crystals, X-rays, Sensors

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Proceedings Article | 1 September 2009 Paper

Paper

Soft gamma-ray optics: new Laue lens design and performance estimates

Nicolas Barrière, Lorenzo Natalucci, Nikolay Abrosimov, Peter von Ballmoos, Pierre Bastie, Pierre Courtois, Michael Jentschel, Jürgen Knödlseder, Julien Rousselle, Pietro Ubertini

Proceedings Volume 7437, 74370K (2009) https://doi.org/10.1117/12.826138

KEYWORDS: Crystals, Telescopes, Reflectivity, Diffraction, Copper, Gamma radiation, Lens design, Crystallography, Silver, Point spread functions

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Proceedings Article | 31 August 2009 Paper

Paper

High-Z crystals for gamma-ray optics

J. Rousselle, P. von Ballmoos, N. Barrière, N. Abrosimov, P. Bastie, G. Bonnetto, T. Camus, P. Courtois, M. Jentschel, E. Lecomte, E. Rivière, G. Roudil

Proceedings Volume 7437, 74370L (2009) https://doi.org/10.1117/12.825245

KEYWORDS: Crystals, Gold, Diffraction, Reflectivity, Silver, Gamma radiation, Platinum, Absorption, Sensors, Laser crystals

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Showing 5 of 24 publications

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