Mr. Scott C. Roberts Profile

Scott C. Roberts

Director - Astronomy Technology at National Research Council Canada

SPIE Involvement:

Conference Chair | Author

Publications (55)

Proceedings Article | 25 August 2022 Presentation + Paper

Reliability estimate for the Thirty Meter Telescope

John Rogers, Frank Thede, Hessam Khodabakhsh, Bart Fordham, Gelys Trancho, Scott Roberts

Proceedings Volume 12187, 121870M (2022) https://doi.org/10.1117/12.2630613

KEYWORDS: Reliability, Observatories, Telescopes, Telecommunications, Systems modeling, Imaging systems, Adaptive optics, Thirty Meter Telescope, Mirrors, Data modeling

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Proceedings Article | 25 August 2022 Presentation + Paper

TMT systems engineering evolution in the last decade

George Angeli, Josh Church, Fernando Santoro, Scott Roberts, Doug McMartin, Nancy Han, Konstantinos Vogiatzis, Hugh Thompson, John Miles, Gelys Trancho, Kayla Hardie, John Rogers, Bart Fordham, Sarah Gajadhar, Jamie Dodge

Proceedings Volume 12187, 121870L (2022) https://doi.org/10.1117/12.2631603

KEYWORDS: Systems engineering, Interfaces, Computer aided design, Observatories, Systems modeling, Standards development, Safety, Reliability, Databases, Control systems

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Proceedings Article | 13 December 2020 Presentation + Paper

Inclusion in an international training program for early-career engineers and scientists in the Thirty Meter Telescope partnership

Nicholas McConnell, Austin Barnes, Warren Skidmore, Renate Kupke, Jessica Lu, Scott Roberts, Ravinder Bhatia, Sandra Dawson, Gary Sanders, Lisa Hunter

Proceedings Volume 11449, 114491O (2020) https://doi.org/10.1117/12.2575654

KEYWORDS: Thirty Meter Telescope, Reflectivity, Large telescopes

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Proceedings Article | 13 December 2020 Presentation + Paper

Are we there yet? Science-based roadmaps for astronomy technology research and development

Scott Roberts, Alan McConnachie, Dean Chalmers

Proceedings Volume 11450, 1145014 (2020) https://doi.org/10.1117/12.2575982

KEYWORDS: Astronomy, Astrophysics, Radio astronomy, Data analysis, Observatories

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Proceedings Article | 13 December 2020 Presentation + Paper

Gemini Infrared Multi-Object Spectrograph: preliminary design overview

Scott Chapman, Darren Erickson, Adam Muzzin, Paul Hickson, Kim Venn, Simon Thibault, Marcin Sawicki, Jennifer Dunn, Alison Peck, Masen Lamb, Shaojie Chen, Saugata Dutt, Scott Roberts, Denis Brousseau, Tristan Chabot, Gaetano Sivo, Suresh Sivanandam, Martin Tschimmel, David Henderson, Alexis Hill, Olivier Lardière, André Anthony

Proceedings Volume 11447, 114471A (2020) https://doi.org/10.1117/12.2561607

KEYWORDS: Spectrographs, Astronomical imaging, Gemini Observatory, Infrared imaging, Infrared spectroscopy, Infrared radiation, Adaptive optics, Imaging systems, Spatial resolution, Spectral resolution

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Proceedings Article | 10 July 2018 Presentation + Paper

On the precision of aero-thermal simulations for TMT: revisited

Konstantinos Vogiatzis, Hugh Thompson, Scott Roberts

Proceedings Volume 10705, 1070504 (2018) https://doi.org/10.1117/12.2312865

KEYWORDS: Spatial resolution, Computer simulations, Turbulence, Thirty Meter Telescope, Observatories, Image quality, Spectral resolution

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Proceedings Article | 10 July 2018 Paper

Ground layer studies for the alternate TMT site

Konstantinos Vogiatzis, Hugh Thompson, Scott Roberts, Christophe Dumas

Proceedings Volume 10705, 107051N (2018) https://doi.org/10.1117/12.2313039

KEYWORDS: Observatories, Thirty Meter Telescope, Optical turbulence, Computational fluid dynamics, Telescopes, Turbulence

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Proceedings Article | 10 July 2018 Presentation + Paper

Optical performance prediction of the Thirty Meter Telescope after initial alignment using optical modeling

Mark Colavita, Byoung-Joon Seo, Carl Nissly, Mitchell Troy, Scott Roberts, John Rogers

Proceedings Volume 10705, 107050T (2018) https://doi.org/10.1117/12.2314351

KEYWORDS: Telescopes, Distortion, Optical alignment, Error analysis, Thirty Meter Telescope, Performance modeling

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Proceedings Article | 8 August 2016 Paper

A database for TMT interface control documents

Kim Gillies, Scott Roberts, John Rogers, Allan Brighton

Proceedings Volume 9911, 99112Q (2016) https://doi.org/10.1117/12.2234325

KEYWORDS: Human-machine interfaces, Databases, Control systems, Process control, Systems modeling, Data modeling, Systems engineering, Telescopes, Sensors, Interfaces

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Proceedings Article | 4 August 2014 Paper

Wavefront sensing and control performance modeling of the Thirty Meter telescope for systematic trade analyses

Carl Nissly, Byoung-Joon Seo, Mitchell Troy, Gary Chanan, Scott Roberts, John Rogers

Proceedings Volume 9150, 91500S (2014) https://doi.org/10.1117/12.2057157

KEYWORDS: Telescopes, Wavefronts, Adaptive optics, Wavefront sensors, Space telescopes, Performance modeling, Mirrors, Error analysis, Calibration, Thirty Meter Telescope

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Proceedings Article | 4 August 2014 Paper

Systems engineering of the Thirty Meter Telescope for the construction phase

Scott Roberts, John Rogers, Hugh Thompson, Konstantinos Vogiatzis, Douglas MacMartin, Eric Wilde, Mitchell Troy, Byoung-Joon Seo, Carl Nissly

Proceedings Volume 9150, 91500V (2014) https://doi.org/10.1117/12.2056870

KEYWORDS: Systems engineering, Observatories, Computer aided design, Control systems, Data modeling, Systems modeling, Performance modeling, Databases, Interfaces, Thirty Meter Telescope

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Proceedings Article | 4 August 2014 Paper

TMT telescope structure thermal model

Konstantinos Vogiatzis, Amir Sadjadpour, Scott Roberts

Proceedings Volume 9150, 915011 (2014) https://doi.org/10.1117/12.2056582

KEYWORDS: Telescopes, Systems modeling, Thermal modeling, Solid modeling, Mirrors, 3D modeling, Calibration, Electronics, Solids, Thirty Meter Telescope

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Proceedings Article | 22 July 2014 Paper

Preliminary design study of the TMT Telescope structure system: overview

Tomonori Usuda, Satoru Sofuku, Noboru Itoh, Takeharu Oshima, Takashi Takanezawa, Makoto Endo, Yutaka Ezaki, Junji Inatani, Masanori Iye, Amir Sadjadpour, Noboru Kawaguchi, Kazuhiro Nagae, Atsushi Kato, Junji Takaki, Masaki Hirano, Masaki Tabata, Yasushi Horiuchi, Yusuke Saruta, Tomoya Hattori, Mark Sirota, Scott Roberts, Larry Stepp

Proceedings Volume 9145, 91452F (2014) https://doi.org/10.1117/12.2055767

KEYWORDS: Telescopes, Optical instrument design, Computer aided design, Mirrors, Electroluminescence, Control systems design, Control systems, Earthquakes, Safety, Thirty Meter Telescope

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We present an overview of the preliminary design of the Telescope Structure System (STR) of Thirty Meter Telescope (TMT). NAOJ was given responsibility for the TMT STR in early 2012 and engaged Mitsubishi Electric Corporation (MELCO) to take over the preliminary design work. MELCO performed a comprehensive preliminary design study in 2012 and 2013 and the design successfully passed its Preliminary Design Review (PDR) in November 2013 and April 2014. Design optimizations were pursued to better meet the design requirements and improvements were made in the designs of many of the telescope subsystems as follows: 1. 6-legged Top End configuration to support secondary mirror (M2) in order to reduce deformation of the Top End and to keep the same 4% blockage of the full aperture as the previous STR design. 2. “Double Lower Tube” of the elevation (EL) structure to reduce the required stroke of the primary mirror (M1) actuators to compensate the primary mirror cell (M1 Cell) deformation caused during the EL angle change in accordance with the requirements. 3. M1 Segment Handling System (SHS) to be able to make removing and installing 10 Mirror Segment Assemblies per day safely and with ease over M1 area where access of personnel is extremely difficult. This requires semi-automatic sequence operation and a robotic Segment Lifting Fixture (SLF) designed based on the Compliance Control System, developed for controlling industrial robots, with a mechanism to enable precise control within the six degrees of freedom of position control. 4. CO₂ snow cleaning system to clean M1 every few weeks that is similar to the mechanical system that has been used at Subaru Telescope. 5. Seismic isolation and restraint systems with respect to safety; the maximum acceleration allowed for M1, M2, tertiary mirror (M3), LGSF, and science instruments in 1,000 year return period earthquakes are defined in the requirements. The Seismic requirements apply to any EL angle, regardless of the operational status of Hydro Static Bearing (HSB) system and stow lock pins. In order to find a practical solution, design optimization study for seismic risk mitigation was carried out extensively, including the performing of dynamic response analyses of the STR system under the time dependent acceleration profile of seven major earthquakes. The work is now moving to the final design phase from April 2014 for two years.

Proceedings Article | 13 September 2012 Paper

TMT adaptive optics program status report

Lianqi Wang, Alexis Hill, Jean-Pierre Véran, Shanqiu Chen, Sean Adkins, John Pazder, Kai Wei, Hubert Pagès, Jenny Atwood, Scott Roberts, Thomas Pfrommer, Jean-Christophe Sinquin, Vladimir Reshetov, Brent Ellerbroek, Yong Bo, Ivan Wevers, Matthias Schoeck, Paul Hickson, Luc Gilles, Arnaud Bastard, Kris Caputa, Malcolm Smith, Marc-Andre Boucher, Raphael Cousty, Carlos Correia, David Andersen, Peter W. Byrnes, Joeleff Fitzsimmons, Glen Herriot, James Gregory, Corinne Boyer

Proceedings Volume 8447, 84471J (2012) https://doi.org/10.1117/12.927046

KEYWORDS: Adaptive optics, Laser guide stars, Telescopes, Prototyping, Sensors, Wavefronts, Electronics, Sodium, Laser systems engineering, Thirty Meter Telescope

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Proceedings Article | 13 September 2012 Paper

TMT NFIRAOS: adaptive optics system for the Thirty Meter Telescope

Vlad Reshetov, Scott Roberts, Brent Ellerbroek, Peter Byrnes, Marc-André Boucher, Alexis Hill, Luc Gilles, David Andersen, Jennifer Dunn, Joeleff Fitzsimmons, Carlos Correia, Paul Hickson, Jenny Atwood, Lianqi Wang, Glen Herriot, Jean-Pierre Véran, Dan Kerley, Corinne Boyer, Malcolm Smith, Kris Caputa, Ivan Wevers, John Pazder

Proceedings Volume 8447, 84471M (2012) https://doi.org/10.1117/12.925087

KEYWORDS: Adaptive optics, Telescopes, Wavefront sensors, Field programmable gate arrays, Mirrors, Calibration, Laser guide stars, Actuators, Space telescopes, Thirty Meter Telescope

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Proceedings Article | 10 November 2011 Paper

NRCIM integrated opto-mechanical analysis toolset for the Thirty Meter Telescope

Scott Roberts

Proceedings Volume 8336, 83360A (2011) https://doi.org/10.1117/12.914555

KEYWORDS: Zemax, Telescopes, Interfaces, Mirrors, MATLAB, Data modeling, Adaptive optics, Motion models, Systems modeling, Thirty Meter Telescope

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Proceedings Article | 5 August 2010 Paper

Systems engineering of the Thirty Meter Telescope through integrated opto-mechanical analysis

Scott Roberts

Proceedings Volume 7738, 773818 (2010) https://doi.org/10.1117/12.857661

KEYWORDS: Telescopes, Actuators, Zemax, Systems modeling, Mirrors, Interfaces, Motion models, Data modeling, MATLAB, Transform theory

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Proceedings Article | 13 July 2010 Paper

First light adaptive optics systems and components for the Thirty Meter Telescope

Luc Gilles, Ivan Wevers, Olivier Lardier, Malcolm Smith, Corinne Boyer, Lianqi Wang, David Andersen, Rodolphe Conan, Joeleff Fitzsimmons, Raphael Cousty, Jennifer Atwood, Thomas Pfrommer, Frederick Gamache, Vladimir Reshetov, Scott Roberts, Glen Herriot, Matthias Schoeck, Curt Vogel, Peter Byrnes, Paul Hickson, Steve Browne, Daren Erikson, Glenn Tyler, Sean Adkins, Brent Ellerbroek, Jean-Christophe Sinquin, Pierre Morin, Jean-Pierre Veran, Jeff Vaughn, Kris Caputa, David Quinn, John Pazder

Proceedings Volume 7736, 773604 (2010) https://doi.org/10.1117/12.856503

KEYWORDS: Adaptive optics, Laser guide stars, Telescopes, Sensors, Distortion, Wavefront sensors, Space telescopes, Stars, Sodium, Wavefronts

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Proceedings Article | 13 July 2010 Paper

NFIRAOS: TMT's facility adaptive optics system

Brent Ellerbroek, Paul Hickson, Thomas Pfrommer, Vlad Reshetov, Scott Roberts, Jennifer Atwood, Kate Jackson, John Pazder, Jean-Pierre Véran, Rod Conan, Olivier Lardière, Annie Beauvillier, Corinne Boyer, Lianqi Wang, Glen Herriot, David Andersen, Alexis Hill, Peter Byrnes, Joeleff Fitzsimmons, Ivan Wevers, Luc Gilles

Proceedings Volume 7736, 77360B (2010) https://doi.org/10.1117/12.857662

KEYWORDS: Telescopes, Adaptive optics, Stars, Calibration, Wavefront sensors, Mirrors, Beam splitters, Visible radiation, Sensors, Sodium

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Proceedings Article | 10 July 2008 Paper

TMT telescope structure system: design and development progress report

Mark Sirota, Peter Thompson, Doug MacMynowski, Kei Szeto, Christie Lagally, Dominic Tsang, Glenn Austin, Steven Patrick, Mike Gedig, Larry Stepp, Scott Roberts

Proceedings Volume 7012, 70122G (2008) https://doi.org/10.1117/12.787002

KEYWORDS: Telescopes, Optical instrument design, Control systems, Structural design, Safety, Control systems design, Finite element methods, Space telescopes, Earthquakes, Thirty Meter Telescope

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Proceedings Article | 9 July 2008 Paper

Integrated modeling for the GPi flexure sensitive structure

J. Murray Fletcher, Scott Roberts, John Pazder, Darren Erickson

Proceedings Volume 7017, 701711 (2008) https://doi.org/10.1117/12.788449

KEYWORDS: Zemax, Adaptive optics, Data modeling, Systems modeling, Gemini Planet Imager, Motion models, Finite element methods, MATLAB, Integrated modeling, Interfaces

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Proceedings Article | 7 July 2008 Paper

Systems engineering for the preliminary design of the Thirty Meter Telescope

George Angeli, Scott Roberts, Konstantinos Vogiatzis

Proceedings Volume 7017, 701704 (2008) https://doi.org/10.1117/12.787220

KEYWORDS: Optical transfer functions, Point spread functions, Telescopes, Observatories, Error analysis, Mirrors, Systems engineering, Atmospheric optics, Image quality, Thirty Meter Telescope

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Proceedings Article | 29 June 2006 Paper

WFOS: a wide field optical spectrograph for the Thirty Meter Telescope

Tim Hardy, Andre Anthony, Roberto Abraham, John Pazder, Simon Sun, Scott Roberts, David Loop, Murray Fletcher

Proceedings Volume 6269, 62691X (2006) https://doi.org/10.1117/12.672712

KEYWORDS: Cameras, Telescopes, Spectrographs, Sensors, Diffraction gratings, Mirrors, Spectral resolution, Optical design, Imaging spectroscopy, Thirty Meter Telescope

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Proceedings Article | 28 June 2006 Paper

Evaluation of ground layer adaptive optics for the wide field optical spectrograph on the TMT

Jeff Stoesz, Scott Roberts, Matthew Britton, Jean-Pierre Véran, Brent Ellerbroek

Proceedings Volume 6272, 62724N (2006) https://doi.org/10.1117/12.672578

KEYWORDS: Adaptive optics, Monochromatic aberrations, Mirrors, Point spread functions, Turbulence, Telescopes, Actuators, Sodium, Calibration, Spectrographs

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Proceedings Article | 27 June 2006 Paper

A conceptual design for the Thirty Meter Telescope adaptive optics systems

M. Britton, R. Palomo, R. Joyce, S. Roberts, C. Boyer, G. Tyler, C. Vogel, S. Browne, M. Hunten, C. Bradley, I. Powell, R. Conan, M. Liang, L. Gilles, L. Daggert, J.-P. Veran, Q. Yang, J.-L. Carel, M. Troy, G. Herriot, J. Elias, M. Smith, M. Cho, R. Dekany, E. Ruch, R. Clare, R. Flicker, M. Chun, J.-C. Sinquin, D. Gavel, J. Stoesz, D. Erickson, P. Hampton, R. Buchroeder, B. Ellerbroek, B. Macintosh

Proceedings Volume 6272, 62720D (2006) https://doi.org/10.1117/12.669422

KEYWORDS: Adaptive optics, Telescopes, Mirrors, Laser guide stars, Wavefronts, Wavefront sensors, Stars, Control systems, Imaging spectroscopy, Imaging systems

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Proceedings Article | 26 June 2006 Paper

TMT telescope structure system: design and development

Dominic Tsang, Nathan Loewen, Jerry Nelson, Kei Szeto, Simon Sun, Scott Roberts, Mike Gedig, Larry Stepp

Proceedings Volume 6267, 62672Q (2006) https://doi.org/10.1117/12.669731

KEYWORDS: Telescopes, Mirrors, Optical instrument design, Space telescopes, Structural design, Systems modeling, Optical components, Actuators, Image quality, Thirty Meter Telescope

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Proceedings Article | 24 August 2005 Paper

Optical performance analysis and optimization of large telescope structural designs

Dan Kerley, Simon Sun, Scott Roberts

Proceedings Volume 5867, 58670O (2005) https://doi.org/10.1117/12.618568

KEYWORDS: Mirrors, Telescopes, Actuators, Transform theory, Image segmentation, MATLAB, Data modeling, Structural design, Zemax, Thirty Meter Telescope

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We describe a tool to analyze the effects of gravity induced deflections on a telescope structure with segmented primary mirror optics. An objective of the telescope structural design process is to minimize image quality degradation due to uncorrectable static deflections of the optics under gravity, while ensuring that the overall system meets several requirements including limits of maximum primary mirror actuator stroke, segment rotation and decenter, and secondary mirror actuation. These design and performance criteria are not readily calculated within a finite element program. Our Merit Function routine, implemented in MATLAB and called by ANSYS, calculates these parameters and makes them available within ANSYS for evaluation and design optimization. In this analysis, ANSYS outputs key structural-model nodal displacements to a file, which are used to determine the 6 degree of freedom motion of the telescope's optical surfaces. MATLAB then utilizes these displacements, along with a database containing coordinate system transforms and a linear optics model derived from ZEMAX, to calculate various performance criteria. The values returned to ANSYS can be used to iteratively optimize performance over a set of structural design parameters. Optical parameters calculated by this routine include the optical path difference at the pupil, RMS wavefront, encircled energy and low order Zernike terms resulting from primary mirror segment rotation and decenter. Also reported are the maximum actuator strokes required to restore tip-tilt and piston of the primary mirror segments, and the deflection of the secondary mirror under gravitational load. The merit function routine is being used by the Thirty Meter Telescope (TMT) project to optimize and assess the performance of various telescope structural designs. This paper describes the mathematical basis of the calculations, their implementation and gives preliminary results of the TMT Telescope Structure Reference Design.

Proceedings Article | 23 August 2005 Paper

Validation and verification of integrated model simulations of a thirty meter telescope

Simon Sun, Nathan Stretch, Joeleff Fitzsimmons, John Pazder, Dan Kerley, Jennifer Dunn, Scott Roberts, Malcolm Smith

Proceedings Volume 5867, 58670Q (2005) https://doi.org/10.1117/12.618557

KEYWORDS: Data modeling, Mirrors, Zemax, Telescopes, Integrated modeling, Device simulation, Interfaces, Laminated object manufacturing, Transform theory, Systems modeling

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Proceedings Article | 9 December 2004 Paper

Development of a Canadian large optical telescope

Scott Roberts

Proceedings Volume 5578, (2004) https://doi.org/10.1117/12.567520

KEYWORDS: Telescopes, Mirrors, Adaptive optics, Optical telescopes, Integrated modeling, Optical instrument design, James Webb Space Telescope, Aerodynamics, Astronomy, Thirty Meter Telescope

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Proceedings Article | 16 November 2004 Paper

TMT/VLOT integrated modeling

Joeleff Fitzsimmons, Glen Herriot, Jennifer Dunn, Scott Roberts, John Pazder, Malcolm Smith, Dan Kerley

Proceedings Volume 5579, (2004) https://doi.org/10.1117/12.567555

KEYWORDS: Telescopes, Mirrors, Adaptive optics, Integrated modeling, Space telescopes, Device simulation, Optical instrument design, Geometrical optics, Control systems, Thirty Meter Telescope

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Proceedings Article | 30 September 2004 Paper

A Canadian wide-field optical spectrograph for a 30-m telescope

Leslie Saddlemyer, Bev Oke, David Crampton, Marc Baril, Scott Roberts, James Stilburn, John Pazder, Denis Laurin, Ian Powell, Kei Szeto

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.552436

KEYWORDS: Telescopes, Cameras, Relays, Spectrographs, Space telescopes, Collimators, Mirrors, Diffraction gratings, Charge-coupled devices, Lenses

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Proceedings Article | 24 September 2004 Paper

Durable coatings for large segmented mirrors

Scott Robert, Luc Levesque, Les Saddlemye, Dennis Crabtree, Samir Ilias, Simon Thibault, Michel Poirier

Proceedings Volume 5494, (2004) https://doi.org/10.1117/12.552642

KEYWORDS: Reflectivity, Sputter deposition, Thin films, Mirrors, Thin film coatings, Dielectrics, Ions, Gas lasers, Optical coatings, Aluminum

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Proceedings Article | 16 September 2004 Paper

Predicting the aerodynamic performance of the Canadian Very Large Optical Telescope

Scott Roberts, Mahmoud Mamou, Joeleff Fitzsimmons, Laurent Jolissaint, Kevin Cooper, Glen Herriot, Jennifer Dunn

Proceedings Volume 5497, (2004) https://doi.org/10.1117/12.552317

KEYWORDS: Mirrors, Aerodynamics, Telescopes, CFD analysis, Optical telescopes, Integrated modeling, Data modeling, Wind measurement, Performance modeling, Thirty Meter Telescope

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Proceedings Article | 16 September 2004 Paper

Very Large Optical Telescope (VLOT) integrated model enhancements

Malcolm Smith, Scott Roberts, Jennifer Dunn, Joeleff Fitzsimmons, John Pazder, Jean-Pierre Veran, Glen Herriot

Proceedings Volume 5497, (2004) https://doi.org/10.1117/12.552315

KEYWORDS: Adaptive optics, Integrated modeling, Telescopes, Mirrors, Space telescopes, Device simulation, Systems modeling, Data modeling, Ray tracing, Finite element methods

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Proceedings Article | 16 September 2004 Paper

Modeling tools to estimate the performance of the Thirty Meter Telescope: an integrated approach

Scott Roberts, Konstantinos Vogiatzis, Joeleff Fitzsimmons, Douglas MacMynowski, George Angeli, Jennifer Dunn, Anna Segurson

Proceedings Volume 5497, (2004) https://doi.org/10.1117/12.552523

KEYWORDS: Telescopes, Mirrors, Integrated modeling, Device simulation, Sensors, Integrated optics, Actuators, Optical instrument design, Astronomy, Thirty Meter Telescope

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Proceedings Article | 16 September 2004 Paper

Model order reduction of structural dynamics of a very large optical telescope

Scott Roberts, Raymond Yu, Inna Sharf

Proceedings Volume 5497, (2004) https://doi.org/10.1117/12.552499

KEYWORDS: Telescopes, Mirrors, Systems modeling, Structural dynamics, Integrated modeling, Space telescopes, Actuators, Finite element methods, Control systems, Performance modeling

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Proceedings Article | 7 July 2004 Paper

VLOT: a modest Canadian 20-m telescope

Joeleff Fitzsimmons, Jennifer Dunn, John Pazder, Scott Roberts, Glen Herriot, Dennis Crabtree, Leslie Saddlemyer, Malcolm Smith

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566114

KEYWORDS: Telescopes, Mirrors, Optical instrument design, Adaptive optics, Imaging spectroscopy, Space telescopes, Integrated modeling, Spectroscopy, Manufacturing, Domes

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Proceedings Article | 7 July 2004 Paper

Aerodynamic modeling of the Canadian Very Large Optical Telescope

Kevin Cooper, Scott Roberts, Mahmoud Mamou, Joeleff Fitzsimmons, Laurent Jolissaint, Glen Herriot

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566246

KEYWORDS: Mirrors, CFD analysis, Aerodynamics, Telescopes, Actuators, Integrated modeling, Data modeling, Optical telescopes, MATLAB, Wind measurement

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Proceedings Article | 7 July 2004 Paper

The optical modeling tools for the Canadian Very Large Optical Telescope integrated model

Malcolm Smith, Hannah McKenzie, Jean-Francois Lavigne, Scott Roberts, John Pazder

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566266

KEYWORDS: Mirrors, Zemax, Ray tracing, Integrated modeling, Wavefronts, Telescopes, Data modeling, Image quality, Integrated optics, MATLAB

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Proceedings Article | 7 July 2004 Paper

Integrated modeling of the Canadian Very Large Optical Telescope

Scott Roberts, Leslie Saddlemyer, Jennifer Dunn, Glen Herriot, Nathan Loewen, Joeleff Fitzsimmons, John Pazder, Malcolm Smith

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566206

KEYWORDS: Mirrors, Telescopes, Integrated modeling, Systems modeling, Actuators, Structural dynamics, Device simulation, Integrated optics, Geometrical optics, Interfaces

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Proceedings Article | 7 March 2003 Paper

Six degree-of-freedom positioner for optical components

Robert Gaunt, Andre Anthony, Scott Roberts

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.460441

KEYWORDS: Mirrors, Kinematics, Actuators, Off axis mirrors, Optical components, Mirror mounts, Adaptive optics, Optical alignment, Telescopes, Matrices

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Proceedings Article | 7 March 2003 Paper

Gemini-North multi-object spectrograph integration, test and commissioning

Kei Szeto, Richard Murowinski, J. Murray Fletcher, Roger Davies, Angelic Ebbers, Robert Nolan, Terry Purkins, David Crampton, I. Jean, S. Juneau, Richard Wolff, Chris Tierney, Inger Jorgensen, Scott Roberts, Ken Laidlaw, Steven Beard, Malcolm Smith, Robert Wooff, Douglas Simons, Isobel Hook, Ian Richardson, Brian Leckie, G. Marshall, Colin Dickson, Jeremy Allington-Smith, James Stilburn

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.461526

KEYWORDS: Telescopes, Gemini Observatory, Sensors, Image quality, Astronomical imaging, Spectrographs, Charge-coupled devices, Imaging spectroscopy, Molybdenum, Optical filters

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Proceedings Article | 30 January 2003 Paper

Canadian very large optical telescope technical studies

Scott Roberts, Dennis Crabtree, Christopher Morbey, David Crampton, James Hesser, John Pazder, J. Beverly Oke, Glen Herriot, Kei Szeto, David Halliday, Timothy Davidge, Michael Gedig, Ray Carlberg, Jean-Pierre Veran, Joeleff Fitzsimmons

Proceedings Volume 4840, (2003) https://doi.org/10.1117/12.459088

KEYWORDS: Telescopes, Mirrors, Adaptive optics, Space telescopes, Optical instrument design, Point spread functions, Silicon carbide, Sensors, Stars, Control systems

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Proceedings Article | 16 August 2000 Paper

Design of a convex and camera mirror support system for Altair, the Gemini-North adaptive optics system

Kei Szeto, Jerry Sebesta, Joeleff Fitzsimmons, Scott Roberts, Andre Anthony, Jean-Pierre Veran, Robert Gaunt

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395416

KEYWORDS: Mirrors, Cameras, Temperature metrology, Mirror mounts, Assembly tolerances, Off axis mirrors, Optical benches, Telescopes, Image quality, Tolerancing

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Proceedings Article | 16 August 2000 Paper

Mechanical design of Altair, the Gemini-North adaptive optics system

Karen Taylor, Dave Duncan, Joeleff Fitzsimmons, Kei Szeto, Philip Shott, Scott Roberts, Jerry Sebesta, Robert Gaunt, Greg Siddall, Andre Anthony

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395418

KEYWORDS: Mirrors, Optical benches, Telescopes, Electronics, Space telescopes, Aluminum, Adaptive optics, Beam splitters, Off axis mirrors, Cameras

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Proceedings Article | 16 August 2000 Paper

Manufacturing and heat-treatment procedure for the ALTAIR optical bench

Joeleff Fitzsimmons, Kei Szeto, Scott Roberts, Jerry Sebesta

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395409

KEYWORDS: Aluminum, Optical benches, Manufacturing, Optics manufacturing, Optical components, Telescopes, Finite element methods, Gemini Observatory, Optical design, Heat treatments

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Proceedings Article | 16 August 2000 Paper

Mechanically actuated reconfigurable slits (MARS) for visible and infrared multi-object spectrographs

Karen Taylor, Robert Gaunt, Andre Anthony, Andrew McIlwain, Alexis Hill, Scott Roberts, Ben Townsend, Daniel Booy, Geoff Kabush, Robert Vrooman, Carrie Abbott

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395419

KEYWORDS: Mars, Actuators, Cryogenics, Spectrographs, Space telescopes, Molybdenum, Telescopes, Sensors, Astronomical imaging, Infrared radiation

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Proceedings Article | 7 July 2000 Paper

Progress on Altair: the Gemini North adaptive optics system

Glen Herriot, Tim Hardy, Simon Morris, Christopher Morbey, Jerry Sebesta, M. Pfleger, Kei Szeto, Andre Anthony, Leslie Saddlemyer, A. Mirza, Jennifer Dunn, Brian Leckie, Philip Shott, J. Murray Fletcher, M. Smith, Jean-Pierre Veran, Robert Wooff, Dennis Derdall, Scott Roberts, W. Windels, Dave Duncan, Angelic Ebbers

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390288

KEYWORDS: Mirrors, Stars, Telescopes, Adaptive optics, Gemini Observatory, Deformable mirrors, Control systems, Laser guide stars, Wavefront sensors, Actuators

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Proceedings Article | 11 September 1998 Paper

Optomechanical design of Altair, the Gemini adaptive optics system

Scott Roberts, Gurjeet Singh

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321627

KEYWORDS: Optical benches, Wavefront sensors, Mirrors, Electronics, Telescopes, Adaptive optics, Tolerancing, Space telescopes, Optical design, Gemini Observatory

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Proceedings Article | 11 September 1998 Paper

Innovations in Gemini adaptive optics system design

Glen Herriot, Gurjeet Singh, Scott Roberts, J. Murray Fletcher, Eric Richardson, Leslie Saddlemyer, Jean-Pierre Veran, Simon Morris

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321684

KEYWORDS: Stars, Mirrors, Telescopes, Gemini Observatory, Adaptive optics, Control systems, Laser guide stars, Calibration, Wavefront sensors, Actuators

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Proceedings Article | 9 July 1998 Paper

Gemini multiobject spectrographs

Maureen Ellis, Roger Davies, David Crampton, Robert Content, Jeremy Allington-Smith, Brian Leckie, Phil Williams, Christopher Morbey, George Dodsworth, Jerry Sebesta, Colin Dickson, Leslie Saddlemyer, Roger Haynes, Timothy Davidge, Richard Murowinski, Steven Beard, R. Bennet, Scott Roberts, Dennis Kelly, J. Murray Fletcher, David Lee, Kei Szeto, James Stilburn, David Robertson, David Robinson, John Webster, Tim Bond, Peter Hastings

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316838

KEYWORDS: Gemini Observatory, Telescopes, Spectrographs, Imaging spectroscopy, Image quality, Astronomical imaging, Image processing, Performance modeling, Sensors, Optical components

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Proceedings Article | 9 July 1998 Paper

Gemini multiobject spectrograph: a flexure critical design

Kei Szeto, Peter Hastings, Leslie Saddlemyer, Scott Roberts, Colin Dickson, Richard Murowinski, Richard Bennett

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316824

KEYWORDS: Sensors, Telescopes, Spectrographs, Gemini Observatory, Finite element methods, Collimators, Wavefront sensors, Cameras, Image quality, Control systems

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Proceedings Article | 13 October 1997 Paper

Optomechanical design of the Gemini multiobject spectrograph on-instrument wavefront sensor

Jerry Sebesta, Leslie Saddlemyer, J. Murray Fletcher, Scott Roberts, Brian Leckie, Kei Szeto

Proceedings Volume 3132, (1997) https://doi.org/10.1117/12.279099

KEYWORDS: Telescopes, Wavefront sensors, Mirrors, Gemini Observatory, Spectrographs, Kinematics, Astronomical imaging, Vignetting, Error analysis, Charge-coupled devices

Proceedings Article | 21 March 1997 Paper

Fabrication of narrow-slit masks for the Gemini Multiobject Spectrograph

Scott Roberts, Jerry Sebesta, Tim Bond, Leslie Saddlemyer, Kei Szeto, James Stilburn

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269017

KEYWORDS: Carbon, Mask making, Gemini Observatory, Telescopes, Laser cutting, Laser systems engineering, Spectrographs, Astronomical imaging, Nd:YAG lasers, Imaging spectroscopy

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Proceedings Article | 21 March 1997 Paper

GMOS: the GEMINI Multiple Object Spectrographs

Ian Lewis, Peter Hastings, George Dodsworth, Steven Beard, Robert Content, James Stilburn, Jeremy Allington-Smith, Kei Szeto, E. Chadwick, P. Bettess, Christopher Morbey, John Webster, Eli Ettedgui-Atad, Scott Roberts, Phil Williams, Maureen Ellis, Brian Leckie, David Crampton, Tim Bond, Timothy Davidge, Richard Murowinski, Roger Haynes, J. Murray Fletcher, David Lee, Roger Davies, Leslie Saddlemyer, Jerry Sebesta

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.268996

KEYWORDS: Spectrographs, Gemini Observatory, Imaging spectroscopy, Image quality, Spectroscopy, Telescopes, Sensors, Galactic astronomy, Stars, Atmospheric optics

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