Dr. Nicolas J. Flagey Profile

Dr. Nicolas J. Flagey

System and Operations Scientist at Space Telescope Science Institute

SPIE Involvement:

Author

Publications (32)

Proceedings Article | 23 August 2024 Presentation + Paper

Presentation + Paper

Empirical characterization of JWST wavefront error variations

Randal Telfer, Marcio Meléndez, Nicolas Flagey, Charles-Philippe Lajoie, Gregory Brady, Tracy Beck, Thomas Comeau, Bernard Kulp, Marshall Perrin, Matthew Lallo

Proceedings Volume 13092, 1309210 (2024) https://doi.org/10.1117/12.3020273

KEYWORDS: James Webb Space Telescope, Wavefronts, Observatories, Image segmentation, Wavefront errors, Phase retrieval, Vibration, Mirrors, Stars, Point spread functions

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SPIE Journal Paper | 15 November 2023 Open Access

Open Access

James Webb Space Telescope optical stability lessons learned for future great observatories

Lee Feinberg, Michael McElwain, Charles Bowers, John Johnston, Gary Mosier, Randy Kimble, Joshua Levi, Lightsey, Ball Aerospace, Boulder, Colorado, United States, J. Knight, Marcel Bluth, Alden Jurling, Marie Levine, D. Scott Acton, Charles Atkinson, Allison Barto, Matthew Bergkoetter, Gregory Brady, Larkin Carey, Lester Cohen, Laura Coyle, Bruce Dean, Michael Eisenhower, Nicolas Flagey, George Hartig, Keith Havey, Brian Hicks, Joseph Howard, Ritva Keski-Kuha, Charles-Philippe Lajoie, Matthew Lallo, Gary Matthews, Marcio Meléndez, Michael Menzel, Sang Park, Marshall Perrin, Laurent Pueyo, Lisbeth Quesnel, Paul Reynolds, Jane Rigby, Babak Saif, Christopher Stark, Randal Telfer, Scott Texter, Julie Van Campen, Begona Vila, Garrett West, Erin Wolf, Tony Whitman, Thomas Zielinski

JATIS, Vol. 10, Issue 01, 011204, (November 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.011204

KEYWORDS: James Webb Space Telescope, Telescopes, Inspection, Online learning, Observatories, Thermal stability, Temperature metrology, Design, Cryogenics, Interfaces

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Proceedings Article | 27 August 2022 Presentation + Paper

Presentation + Paper

Phasing the Webb Telescope

D. Scott Acton, Scott Knight, Maria Carrasquilla, Nick Weiser, Michaela Masciarelli, Sarah Jurczyk, Greg Rapp, Julio Mueckay, Erin Wolf, Jess Murphy, Larkin Carey, Eric Coppock, Chanda Walker, Joel Runnels, Garrett West, Greg Wirth, Brian Hicks, Katie Melbourne, Michael Gordon, Bob Brown, Stefano Grimaldi, Derek Sabatke, Ray Wright, Laura Coyle, Taylor Chonis, Kevin Whiteaker, Marshall Perrin, Tom Comeau, Charles-Philippe Lajoie, George Hartig, Tracy Beck, Matt Lallo, Mike Regan, Randal Telfer, Marcio Meléndez, Greg Brady, Laurent Pueyo, Nicolas Flagey, Bernard Kulp, Ed Nelan, Kiera Brooks, Pierre Chayer, Shannon Osborne, Sherie Holfeltz, Tony Sohn, Tom Zielinski, Alden Jurling, Matt Bergkoetter, Chuck Bowers, Bruce Dean, Lee Feinberg, Ritva Keski-Kuha, Jeff Kirk, Michael McElwain, Joe Howard

Proceedings Volume 12180, 121800U (2022) https://doi.org/10.1117/12.2633474

KEYWORDS: Telescopes, James Webb Space Telescope, Mirrors, Wavefronts, Image processing, Actuators, Sensors, Phase retrieval

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Proceedings Article | 27 August 2022 Paper

Paper

Two novel approaches for determining the sky position of an unstacked, segmented-mirror telescope

Gregory Wirth, Nicolas Flagey, Michael Gordon, Brian Hicks, D. Scott Acton, J. Scott Knight, Paul Lightsey

Proceedings Volume 12180, 121803W (2022) https://doi.org/10.1117/12.2629036

KEYWORDS: Image segmentation, Stars, Telescopes, James Webb Space Telescope, Mirrors, Image processing, Device simulation, Image processing algorithms and systems, Observatories

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Proceedings Article | 25 August 2022 Presentation + Paper

Presentation + Paper

Planning scientific operations for the Maunakea Spectroscopic Explorer

Jennifer Marshall, Jennifer Sobeck, Andreea Petric, Nicolas Flagey

Proceedings Volume 12186, 1218609 (2022) https://doi.org/10.1117/12.2629973

KEYWORDS: Spectroscopy, Astronomy, Telescopes, Software development, Optical fibers, Signal to noise ratio, Observatories, Calibration, Spectrographs, Spectral resolution

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SPIE Journal Paper | 27 February 2021

Estimating carbon emissions at CFHT: a first step toward a more sustainable observatory

Nicolas Flagey, Kahea Thronas, Andreea Petric, Kanoa Withington, Michael Seidel

JATIS, Vol. 7, Issue 01, 017001, (February 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.1.017001

KEYWORDS: Carbon, Observatories, Buildings, Solar cells, Climate change, Astronomy, Solar energy, Climatology, Telescopes, Renewable energy

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As the crisis of climate change affects more people every year and leads to more severe weather patterns with unprecedented socio-economical consequence, all actors on the planet need to understand their responsibility and contribute to solving this generational problem. To tackle this issue, individuals and corporations first need to assess their carbon footprint, which then represents the groundwork for the future implementation of significant changes required to reduce that footprint. We present the carbon emissions attributed to the Canada–France–Hawaii Telescope (CFHT) for the year 2019. We partnered with CarbonBuddy and followed their method to break down the greenhouse gas (GHG) emissions of various activities at CFHT for the entire year of 2019: air travel in and out of state, ground vehicle usage, electricity consumption, and other fossil fuel utilization. The total GHG emissions of CFHT for the year 2019 amount to about 749 tons of CO2 equivalent, which corresponds to more than 16 tons per employee. About 63% of the emissions are related to electricity usage at the summit facility, about 25% to out-of-state travel, about 6% to the use of our fleet of vehicles, and about 5% to electricity usage at headquarters. We show that significant improvements have occurred in the recent past at CFHT, with the installation of solar panels and a remarkable reduction in electricity consumption at headquarters. We list suggestions to further decrease the GHG emissions in the short to long term: offset current emissions by support local projects, invest in more efficient equipment, and establish environmentally friendly habits. The fundamental work presented will facilitate the official planning at CFHT for a drastic reduction in GHG emissions with the goal to meet the objectives laid out in the 2015 Paris Accord. It will also support the design of the Maunakea Spectroscopic Explorer (MSE), the future transformation of CFHT, and allow the project to seize this opportunity and incorporate the fight against climate change as one of its core missions. By choosing to implement those changes, CFHT and MSE can become part of the solution to climate change and lead the way, locally and in the world of astronomy.

Proceedings Article | 15 December 2020 Paper

Paper

Maunakea Night-Sky Model

Andreea Petric, Nicolas Flagey, Jennifer Marshall, Leo Barba, Samuel Barden, Alexis Hill, Kei Szeto, Étienne Artigau, Andrew Stephens

Proceedings Volume 11449, 114491G (2020) https://doi.org/10.1117/12.2561879

KEYWORDS: Spectrographs, Algorithm development, Astronomy, Spectroscopy, Telescopes, Mirrors, Galactic astronomy, Optical fibers, Atmospheric modeling, Atmospheric optics

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Proceedings Article | 13 December 2020 Paper

Paper

A design reference survey for the Maunakea Spectroscopic Explorer

Jennifer Marshall, Andreea Petric, Nicolas Flagey

Proceedings Volume 11449, 1144920 (2020) https://doi.org/10.1117/12.2562470

KEYWORDS: Spectroscopy, Spectral resolution, Multiplexing, Astronomical imaging, Telescopes, Calibration

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Science calibration for highly multiplexed fiber-fed optical spectroscopy: update from Maunakea Spectroscopic Explorer

Samuel Barden, Darren Depoy, Nicolas Flagey, Alexis Hill, Jennifer Marshall, Andreea Petric, Luke Schmidt, Kei Szeto

Proceedings Volume 11449, 1144926 (2020) https://doi.org/10.1117/12.2563025

KEYWORDS: Calibration, Spectroscopy, Multiplexing, Optical spectroscopy, Atmospheric optics, Astronomical imaging, Near infrared spectroscopy, Electroluminescent displays, Spectrographs, Integrated optics

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

MSE acquisition and guider system focal plane hardware conceptual design

Peter Gillingham, Derrick Salmon, Nicolas Flagey, Kei Szeto, Richard Murowinski, Will Saunders

Proceedings Volume 11445, 1144548 (2020) https://doi.org/10.1117/12.2561086

KEYWORDS: Cameras, Stars, Imaging systems, Fiber science, Control systems, Sensors, Metrology

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Designing software for the science operations of Maunakea Spectroscopic Explorer

Kei Szeto, Jennifer Marshall, Nicolas Flagey, Kanoa Withington, Christian Surace

Proceedings Volume 11452, 1145207 (2020) https://doi.org/10.1117/12.2562846

KEYWORDS: Spectroscopy, Near infrared spectroscopy, Telescopes, Data archive systems, Data modeling, Multiplexing, Visible radiation, Spectral resolution

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Mauna Kea Spectrographic Explorer (MSE): new preliminary design for the multi-object high resolution spectrograph

Kai Zhang, Jianrong Shi, Liang Wang, Yongtian Zhu, Zhen Tang, Qiqige Xin, Kei Szeto, Jennifer Marshall, Nicolas Flagey, Alexis Hill, Samuel Barden, Xuefei Gong

Proceedings Volume 11447, 114478B (2020) https://doi.org/10.1117/12.2561553

KEYWORDS: Astronomical imaging, Spectrographs, Spectral resolution, Spectroscopy, Optical telescopes

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Maunakea Spectroscopic Explorer Low Moderate Resolution Spectrograph: paths toward the Preliminary Design Phase

Alexandre Jeanneau, Éric Prieto, Nicolas Flagey, Alexis Hill, Kjetil Dohlen, Roser Pello, Laurence Tresse, Sylvie Brau-Nogué, Christophe Yèche, Pierre-Henri Carton

Proceedings Volume 11447, 1144795 (2020) https://doi.org/10.1117/12.2576314

KEYWORDS: Spectroscopy, Spectrographs, Telescopes, Spectral resolution, Plasma display panels, Astronomy

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Maunakea Spectroscopic Explorer: a guide to manage an international design team

Kei Szeto, Richard Murowinski, Nicolas Flagey, Alexis Hill

Proceedings Volume 11450, 1145023 (2020) https://doi.org/10.1117/12.2563185

KEYWORDS: Spectroscopy, Curium, Document management

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Concept of operations versus operations concept: how do you choose?

Alexis Hill, Nicolas Flagey, Sam Barden, Darren Erickson, Suresh Sivanandam, Kei Szeto

Proceedings Volume 11450, 114502U (2020) https://doi.org/10.1117/12.2563469

KEYWORDS: Systems engineering, Astronomy, Observatories, Defense and security, Document management, Gemini Observatory

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Proceedings Article | 3 January 2020 Paper

Paper

Fiber positioner system selection for the Maunakea Spectroscopic Explorer (MSE)

Nicolas Flagey, Kei Szeto

Proceedings Volume 11203, 1120315 (2020) https://doi.org/10.1117/12.2541055

KEYWORDS: Telescopes, Spectrographs, Near infrared spectroscopy, Spectroscopes, Spectral resolution, Spectroscopy, Spine, Multiplexing, Near infrared

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Proceedings Article | 3 January 2020 Paper

Paper

Maunakea Spectroscopic Explorer: instrumentation for a massively multiplexed spectroscopic survey facility

Alexis Hill, Nicolas Flagey, Jennifer Marshall, Andreea Petric, Kei Szeto

Proceedings Volume 11203, 1120309 (2020) https://doi.org/10.1117/12.2541195

KEYWORDS: Spectrographs, Spectroscopes, Multiplexing, Spectroscopy, Near infrared, Astronomical imaging, Fiber optics, Optical resolution, Aspheric lenses, Spectral resolution

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

Transforming the Canada France Hawaii Telescope (CFHT) into the Maunakea Spectroscopic Explorer (MSE): a conceptual observatory building and facilities design

Steven Bauman, Greg Barrick, Tom Benedict, Armando Bilbao, Alexis Hill, Nicolas Flagey, Casey Elizares, Mike Gedig, Greg Green, Eric Grigel, David Lo, Ivan Look, Thomas Lorentz, Nathan Loewen, Eric Manuel, Alan McConnachie, Ronny Muller, Gaizka Murga, Rick Murowinski, Federico Ruan, Derrick Salmon, Kei Szeto, Jose Teran, Rafael Urrutia

Proceedings Volume 10704, 107041E (2018) https://doi.org/10.1117/12.2311350

KEYWORDS: Telescopes, Observatories, Space telescopes, Coating, Optical instrument design, Spectrographs, Spectroscopes, Spectroscopy, Carbon, Soil science

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

The science calibration challenges of next generation highly multiplexed optical spectroscopy: the case of the Maunakea Spectroscopic Explorer

Alan McConnachie, Nicolas Flagey, Pat Hall, Will Saunders, Kei Szeto, Alexis Hill, Shan Mignot

Proceedings Volume 10704, 107041O (2018) https://doi.org/10.1117/12.2313606

KEYWORDS: Calibration, Lamps, Spectrographs, Telescopes, Sensors, Point spread functions, Photons, Spectrophotometry, Stars, Spectral calibration

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

Optimal scheduling and science delivery of spectra for millions of targets in thousands of fields: the operational concept of the Maunakea spectroscopic explorer (MSE)

Nicolas Flagey, Alan McConnachie, Kei Szeto, Patrick Hall, Alexis Hill, Calum Hervieu

Proceedings Volume 10704, 107040V (2018) https://doi.org/10.1117/12.2313027

KEYWORDS: Calibration, Observatories, Spectrographs, Signal to noise ratio, Telescopes, Coating, Data archive systems

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Proceedings Article | 10 July 2018 Presentation + Paper

Presentation + Paper

Maunakea spectroscopic explorer (MSE): implementing systems engineering methodology for the development of a new facility

Kei Szeto, Alexis Hill, Nicolas Flagey, Calum Hervieu, Mick Edgar, Peter Gillingham, Alan McConachie, Shan Mignot, Richard Murowinski

Proceedings Volume 10705, 107050H (2018) https://doi.org/10.1117/12.2314169

KEYWORDS: Observatories, Signal to noise ratio, Calibration, Telescopes, Spectrographs, Systems engineering, Point spread functions, Spectroscopy

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Proceedings Article | 10 July 2018 Paper

Paper

Modeling and budgeting fiber injection efficiency for the Maunakea Spectroscopic Explorer (MSE)

Nicolas Flagey, Kei Szeto, Shan Mignot, Alexis Hill, Alan McConnachie, Calum Hervieu

Proceedings Volume 10705, 107051O (2018) https://doi.org/10.1117/12.2313048

KEYWORDS: Point spread functions, Telescopes, Zemax, Spectrographs, Optical design, Image quality, Spine, Observatories, Optical instrument design

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Proceedings Article | 10 July 2018 Paper

Paper

Expected observing efficiency of the Maunakea Spectroscopic Explorer (MSE)

Nicolas Flagey, Kei Szeto, Kevin Ho, Billy Mahoney, Alan McConnachie, Alexis Hill, Calum Hervieu

Proceedings Volume 10704, 107042R (2018) https://doi.org/10.1117/12.2312698

KEYWORDS: Calibration, Telescopes, Spectrographs, Photons, Observatories, Humidity, Metrology, Sensors, Spine

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Proceedings Article | 10 July 2018 Paper

Paper

Maximising the sensitivity of next generation multi-object spectroscopy: system budget development and design optimizations for the Maunakea Spectroscopic Explorer

Alan McConnachie, Nicolas Flagey, Kei Szeto, Shan Mignot, Alexis Hill, Pat Hall

Proceedings Volume 10705, 1070522 (2018) https://doi.org/10.1117/12.2313785

KEYWORDS: Signal to noise ratio, Spectroscopy, Telescopes, Spectrographs, Astronomical imaging, Astronomy, Sensors, Chemical elements, Observatories

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

Maunakea Spectroscopic Explorer (MSE): instrumentation suite

Alexis Hill, Nicolas Flagey, Alan McConnachie, Rick Murowinski, Kei Szeto

Proceedings Volume 10702, 107021L (2018) https://doi.org/10.1117/12.2314266

KEYWORDS: Spectrographs, Telescopes, Calibration, Spine, Actuators, Observatories, Cameras, Interfaces, Sensors, Spectral resolution

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

Maunakea spectroscopic explorer advancing from conceptual design

Kei Szeto, Doug Simons, Steven Bauman, Alexis Hill, Nicolas Flagey, Alan McConnachie , Shan Mignot, Richard Murowinski

Proceedings Volume 10700, 107001N (2018) https://doi.org/10.1117/12.2314067

KEYWORDS: Observatories, Telescopes, Spectrographs, Astronomy, Spectroscopy, Multiplexing, Calibration

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Proceedings Article | 18 August 2016 Paper

Paper

Systems budgets architecture and development for the Maunakea Spectroscopic Explorer

Shan Mignot, Nicolas Flagey, Kei Szeto, Rick Murowinski, Alan McConnachie

Proceedings Volume 9911, 99110G (2016) https://doi.org/10.1117/12.2232051

KEYWORDS: Spectroscopes, Systems engineering, Spectroscopy, Telescopes, Observatories, Systems modeling, Spectrographs, Databases, Signal to noise ratio, Image quality

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Proceedings Article | 9 August 2016 Paper

Paper

The Maunakea Spectroscopic Explorer: throughput optimization

Nicolas Flagey, Shan Mignot, Kei Szeto, Alan McConnachie, Rick Murowinski

Proceedings Volume 9908, 99089C (2016) https://doi.org/10.1117/12.2231238

KEYWORDS: Spectral resolution, Sensors, Spectrographs, Telescopes, Mirrors, Coating, Collimators, Lenses, Electroluminescent displays, Silver

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Proceedings Article | 27 July 2016 Paper

Paper

Science-based requirements and operations development for the Maunakea Spectroscopic Explorer

Alan McConnachie, Nicolas Flagey, Rick Murowinski, Kei Szeto, Derrick Salmon, Kanoa Withington, Shan Mignot

Proceedings Volume 9906, 99063M (2016) https://doi.org/10.1117/12.2232967

KEYWORDS: Spectroscopy, Astronomical imaging, Telescopes, Astronomy, Galactic astronomy, Observatories, Space telescopes, Stars, Calibration, Data archive systems

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Proceedings Article | 27 July 2016 Paper

Paper

MSE observatory: a revised and optimized astronomical facility

Steven Bauman, Mathieu Angers, Tom Benedict, David Crampton, Nicolas Flagey, Mike Gedig, Greg Green, Andy Liu, David Lo, Nathan Loewen, Alan McConnachie, Rick Murowinski, René Racine, Derrick Salmon, Siegfried Stiemer, Kei Szeto, Di Wu

Proceedings Volume 9906, 990605 (2016) https://doi.org/10.1117/12.2234311

KEYWORDS: Telescopes, Observatories, Spectroscopes, Astronomy, Space telescopes, Spectrographs, Coating, Camera shutters, Mirrors, 3D modeling

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Proceedings Article | 27 July 2016 Paper

Paper

Maunakea spectroscopic explorer design development from feasibility concept to baseline design

Kei Szeto, Hau Bai, Steven Bauman, David Crampton, Nicolas Flagey, Mike Gedig, Peter Gillingham, Xuefei Gong, Kevin Ho, Nathan Loewen, Alan McConnachie, Shan Mignot, Richard Murowinski, Derrick Salmon, Will Saunders, Siegfried Stiemer, Tom Vermeulen, Kanoa Withington, Kai Zhang

Proceedings Volume 9906, 99062J (2016) https://doi.org/10.1117/12.2234213

KEYWORDS: Optical instrument design, Telescopes, Spectroscopy, Astronomical imaging, Spectrographs, Optical instrument design, Space telescopes, Computer aided design, Observatories, Control systems, Optical design

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Proceedings Article | 15 July 2016 Paper

Paper

Spectral calibration for the Maunakea Spectroscopic Explorer: challenges and solutions

Nicolas Flagey, Alan McConnachie, Kei Szeto, Rick Murowinski, Shan Mignot

Proceedings Volume 9910, 99101F (2016) https://doi.org/10.1117/12.2230932

KEYWORDS: Calibration, Calibration, Telescopes, Cameras, Observatories, Alternate lighting of surfaces, Visualization, Databases, Astronomy, Human-machine interfaces, Camera shutters

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Showing 5 of 32 publications

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