Dr. Julien Guy Profile

Dr. Julien Guy

at Lawrence Berkeley National Lab

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 29 August 2022 Poster + Paper

MegaMapper: concept and optical design for a 6.5m aperture massively multiplexed spectroscopic facility

Guillermo Blanc, Joseph Harry Silber, Stephen Smee, Robert Barkhouser, Robert Besuner, Jeffrey Crane, Juna Kollmeier, Povilas Palunas, David Schlegel, Stephen Shectman, Ricardo Araujo, Charlie Baltay, Mohamed Bouri, Emily Farr, Julien Guy, Leopoldo Infante, Jean-Paul Kneib, Travis Mandeville, Claire Poppett, David Rabinowitz, Solange Ramirez, Michael Schubnell, Joshua Simon, Markus Thurneysen, Sarah Tuttle, William Van Shourt, Stefanie Wachter

Proceedings Volume 12182, 1218230 (2022) https://doi.org/10.1117/12.2625992

KEYWORDS: Telescopes, Spectrographs, Mirrors, Optical design, Spectroscopy, Robots, Optical instrument design, Multiplexing, Robotics, Image quality

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Proceedings Article | 29 August 2022 Presentation + Paper

The DESI instrument

K. Honscheid, K. Fanning, S. Bailey, R. Besuner, A. Dey, C. Dobson, A. Elliott, P. Fagrelius, J. Guy, J. Jimenez, S. Kent, D. Kirkby, M. Landriau, M. Levi, R. Marshall, P. Martini, A. Meisner, C. Poppett, D. Rabinowitz, E.rd Schafly, M. Schubnell, J. Silber, D. Sprayberry

Proceedings Volume 12184, 121840X (2022) https://doi.org/10.1117/12.2629736

KEYWORDS: Spectrographs, Cameras, Telescopes, Near infrared, Camera shutters, Charge-coupled devices, Robots, Stars, Galactic astronomy, Spectroscopes

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Proceedings Article | 13 December 2020 Presentation + Paper

Performance of the Dark Energy Spectroscopic Instrument (DESI) fiber system

Claire Poppett, Patrick Jelinsky, Julien Guy, Jerry Edelstein, Sharon Jelinsky, Jessica Aguilar, Ray Sharples, Jurgen Schmoll, David Bramall, Luke Tyas, Paul Martini, Kevin Fanning, Michael Levi, David Brooks, Peter Doel, Yutong Duan, Gregory Tarle, Erique Gaztañaga, Francisco Prada

Proceedings Volume 11447, 1144711 (2020) https://doi.org/10.1117/12.2562565

KEYWORDS: Telescopes, Spectrographs, Fusion energy, Spectroscopes, Baryon acoustic oscillations, Galactic astronomy, Fiber optics, Fusion splicing

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Proceedings Article | 13 December 2020 Poster + Paper

The DESI sky continuum monitor system

Suk Sien Tie, David Kirkby, Paul Martini, Claire Poppett, Daniel Pappalardo, David Schlegel, Jonathan Shover, Julien Guy, Kevin Fanning, Klaus Honscheid, Michael Lampton, Patrick Jelinsky, Robert Besuner, Kai Zhang, David Brooks, Peter Doel, Yutong Duan, Enrique Gastañaga, Robert Kehoe, Martin Landriau, Michael Levi, Francisco Prada, Gregory Tarle

Proceedings Volume 11447, 1144785 (2020) https://doi.org/10.1117/12.2561436

KEYWORDS: Cameras, Optical filters, Spectroscopes, Baryon acoustic oscillations, Galactic astronomy, Telescopes, Fiber optics, Spectrographs, Imaging systems, Spectroscopy

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Proceedings Article | 13 December 2020 Poster + Paper

Testing the 10 spectrograph units for DESI: approach and results

Sandrine Perruchot, Pierre-Éric Blanc, Julien Guy, Laurent Le Guillou, Samuel Ronayette, Xavier Régal, Gérard Castagnoli, Auguste Le Van Suu, Eduardo Sepulveda, Eric Jullo, Jean-Gabriel Cuby, Sonia Karkar, Patrick Ghislain, Philippe Repain, P.-H. Carton, C. Magneville, Anne Ealet, Stéphanie Escoffier, Aurélia Secroun, Klaus Honscheid, Ann Elliott, Patrick Jelinsky, Brooks David, Doel Peter, Y. Duan, J. Edelstein, J. C. Estrada, E. Gastañaga, A. Karcher, M. Landriau, M. Levi, P. Martini, N. Palanque-Delabrouille, F. Prada, G. Tarle, K. Zhang

Proceedings Volume 11447, 1144786 (2020) https://doi.org/10.1117/12.2561275

KEYWORDS: Spectrographs, Telescopes, Sensors, Spectroscopes, Baryon acoustic oscillations, Galactic astronomy, Fiber optics, Optical fabrication, Sensor performance, Camera shutters

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Proceedings Article | 9 July 2018 Paper

Integration and testing of the DESI multi-object spectrograph: performance tests and results for the first unit out of ten

S. Perruchot, J. Guy, L. Le Guillou, P.-E. Blanc, S. Ronayette, X. Régal, G. Castagnoli, E. Sepulveda, A. Le Van Suu, E. Jullo, J.-G. Cuby, S. Karkar, P. Ghislain, P. Repain, P.-H. Carton, C. Magneville, A. Ealet, S. Escoffier, A. Secroun, M.-C. Cousinou, K. Honscheid, A. Elliot, P. Jelinsky, D. Brooks, G. Tarlè

Proceedings Volume 10702, 107027K (2018) https://doi.org/10.1117/12.2311996

KEYWORDS: Spectrographs, Charge-coupled devices, Light emitting diodes, Photodiodes, Lamps, Point spread functions, Cameras, Near infrared, Sensors, Calibration

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Showing 5 of 6 publications

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