Dr. Leslie Saddlemyer Profile

Dr. Leslie Saddlemyer

Research Council Officer at NRC - Herzburg Institute of Astrophysics

SPIE Involvement:

Author

Publications (47)

Proceedings Article | 6 July 2018 Paper

Paper

SPIRou @CFHT: integration and performance of the cryogenic near infra-red spectrograph unit

Zalpha Challita, Vlad Reshetov, Sébastien Baratchart, Gregory Barrick, Andres Carmona, Jean-François Donati, Yoan Micheau, Claire Moutou, Philippe Vallée, Marcel Belot, Gérard Gallou, Laurent Parès, Patrick Rabou, Simon Thibault, Driss Kouach, Marielle Lacombe, Leslie Saddlemyer, Nicolas Striebig

Proceedings Volume 10702, 1070262 (2018) https://doi.org/10.1117/12.2311999

KEYWORDS: Spectrographs, Cryogenics, Sensors, Optical benches, Cameras, Optical components, Telescopes, Mirrors, Calibration, Optical mounts

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Proceedings Article | 1 September 2017 Paper

Paper

NIRPS: an adaptive-optics assisted radial velocity spectrograph to chase exoplanets around M-stars

F. Wildi, N. Blind, V. Reshetov, O. Hernandez, L. Genolet, U. Conod, M. Sordet, A. Segovilla, J. L. Rasilla, D. Brousseau, S. Thibault, B. Delabre, T. Bandy, M. Sarajlic, A. Cabral, S. Bovay, Ph. Vallée, F. Bouchy, R. Doyon, E. Artigau, F. Pepe, J. Hagelberg, C. Melo, X. Delfosse, P. Figueira, N. C. Santos, J. I. González Hernández, J. R. de Medeiros, R. Rebolo, Ch. Broeg, W. Benz, I. Boisse, L. Malo, U. Käufl, L. Saddlemyer

Proceedings Volume 10400, 1040018 (2017) https://doi.org/10.1117/12.2275660

KEYWORDS: Spectrographs, Adaptive optics, Planets, Exoplanets, Velocity measurements, Stars, Spectroscopy, Optical fibers, Space operations, Interference (communication)

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Since 1st light in 2002, HARPS has been setting the standard in the exo-planet detection by radial velocity (RV) measurements[1]. Based on this experience, our consortium is developing a high accuracy near-infrared RV spectrograph covering YJH bands to detect and characterize low-mass planets in the habitable zone of M dwarfs. It will allow RV measurements at the 1-m/s level and will look for habitable planets around M- type stars by following up the candidates found by the upcoming space missions TESS, CHEOPS and later PLATO. NIRPS and HARPS, working simultaneously on the ESO 3.6m are bound to become a single powerful high-resolution, high-fidelity spectrograph covering from 0.4 to 1.8 micron. NIRPS will complement HARPS in validating earth-like planets found around G and K-type stars whose signal is at the same order of magnitude than the stellar noise. Because at equal resolving power the overall dimensions of a spectrograph vary linearly with the input beam étendue, spectrograph designed for seeing-limited observations are large and expensive. NIRPS will use a high order adaptive optics system to couple the starlight into a fiber corresponding to 0.4” on the sky as efficiently or better than HARPS or ESPRESSO couple the light 0.9” fiber. This allows the spectrograph to be very compact, more thermally stable and less costly. Using a custom tan(θ)=4 dispersion grating in combination with a start-of-the-art Hawaii4RG detector makes NIRPS very efficient with complete coverage of the YJH bands at 110’000 resolution. NIRPS works in a regime that is in-between the usual multi-mode (MM) where 1000’s of modes propagates in the fiber and the single mode well suited for perfect optical systems. This regime called few-modes regime is prone to modal noise- Results from a significant R and D effort made to characterize and circumvent the modal noise show that this contribution to the performance budget shall not preclude the RV performance to be achieved.

Proceedings Article | 7 August 2014 Paper

Paper

On-sky vibration environment for the Gemini Planet Imager and mitigation effort

Markus Hartung, Tom Hayward, Les Saddlemyer, Lisa Poyneer, Andrew Cardwell, Chas Cavedoni, Myung Cho, Jeffrey Chilcote, Paul Collins, Daren Dillon, Ramon Galvez, Gaston Gausachs, Stephen Goodsell, Andrés Guesalaga, Pascale Hibon, James Larkin, Bruce Macintosh, Dave Palmer, Naru Sadakuni, Dmitry Savransky, Andrew Serio, Fredrik Rantakyrö, Kent Wallace

Proceedings Volume 9148, 91480N (2014) https://doi.org/10.1117/12.2057200

KEYWORDS: Gemini Planet Imager, Telescopes, Cryocoolers, Sensors, Mirrors, Gemini Observatory, Wavefronts, Adaptive optics, Observatories, Iterated function systems

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Proceedings Article | 7 August 2014 Paper

Paper

The Gemini planet imager: first light and commissioning

Bruce Macintosh, Andre Anthony, Jenny Atwood, Brian Bauman, Andrew Cardwell, Kris Caputa, Jeffery Chilcote, Robert De Rosa, Daren Dillon, René Doyon, Jennifer Dunn, Darren Erickson, Michael Fitzgerald, Donald Gavel, Ramon Galvez, Stephen Goodsell, James Graham, Alexandra Greenbaum, Markus Hartung, Pascale Hibon, Patrick Ingraham, Dan Kerley, Quinn Konopacky, Kathleen Labrie, James Larkin, Jerome Maire, Franck Marchis, Christian Marois, Max Millar-Blanchaer, Katie Morzinski, Arturo Nunez, Rebecca Oppenheimer, David Palmer, John Pazder, Marshall Perrin, Lisa Poyneer, Laurent Pueyo, Carlos Quiroz, Fredrik Rantakyro, Vlad Reshetov, Les Saddlemyer, Naru Sadakuni, Dmitry Savransky, Andrew Serio, Anand Sivaramakrishnan, Malcolm Smith, Remi Soummer, Sandrine Thomas, J. Wallace, Jason Wang, Jason Weiss, Sloane Wiktorowicz, Schuyler Wolff

Proceedings Volume 9148, 91480J (2014) https://doi.org/10.1117/12.2056709

KEYWORDS: Gemini Planet Imager, Adaptive optics, Stars, Coronagraphy, Telescopes, Gemini Observatory, Calibration, Wavefront sensors, Planets, Iterated function systems

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Proceedings Article | 6 August 2014 Paper

Paper

Gemini planet imager integration to the Gemini South telescope software environment

Fredrik Rantakyrö, Andrew Cardwell, Jeffrey Chilcote, Jennifer Dunn, Stephen Goodsell, Pascale Hibon, Bruce Macintosh, Carlos Quiroz, Marshall Perrin, Naru Sadakuni, Leslie Saddlemyer, Dmitry Savransky, Andrew Serio, Claudia Winge, Ramon Galvez, Gaston Gausachs, Kayla Hardie, Markus Hartung, Javier Luhrs, Lisa Poyneer, Sandrine Thomas

Proceedings Volume 9149, 91492B (2014) https://doi.org/10.1117/12.2055654

KEYWORDS: Gemini Planet Imager, Telescopes, Gemini Observatory, Control systems, Adaptive optics, Iterated function systems, Calibration, Human-machine interfaces, Databases, Logic

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Proceedings Article | 28 July 2014 Paper

Paper

Gemini planet imager observational calibrations V: astrometry and distortion

Quinn Konopacky, Sandrine Thomas, Bruce Macintosh, Daren Dillon, Naru Sadakuni, Jérôme Maire, Michael Fitzgerald, Sasha Hinkley, Paul Kalas, Thomas Esposito, Christian Marois, Patrick Ingraham, Franck Marchis, Marshall Perrin, James Graham, Jason Wang, Robert De Rosa, Katie Morzinski, Laurent Pueyo, Jeffrey Chilcote, James Larkin, Daniel Fabrycky, Stephen Goodsell, Ben Oppenheimer, Jenny Patience, Leslie Saddlemyer, Anand Sivaramakrishnan

Proceedings Volume 9147, 914784 (2014) https://doi.org/10.1117/12.2056646

KEYWORDS: Gemini Planet Imager, Distortion, Iterated function systems, Monte Carlo methods, Planets, Stars, Coronagraphy, Calibration, Telescopes, Point spread functions

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Proceedings Article | 28 July 2014 Paper

Paper

On-instrument wavefront sensor design for the TMT infrared imaging spectrograph (IRIS) update

Jennifer Dunn, Vladimir Reshetov, Jenny Atwood, John Pazder, Bob Wooff, David Loop, Leslie Saddlemyer, Anna Moore, James Larkin

Proceedings Volume 9147, 91479H (2014) https://doi.org/10.1117/12.2057257

KEYWORDS: IRIS Consortium, Mirrors, Spinel, Collimators, Prototyping, Actuators, Glasses, Wavefront sensors, Imaging systems, Thirty Meter Telescope

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Proceedings Article | 24 July 2014 Paper

Paper

Gemini planet imager one button approach

Jennifer Dunn, Dan Kerley, Leslie Saddlemyer, Malcolm Smith, Robert Wooff, Dmitry Savransky, David Palmer, Bruce Macintosh, Jason Weiss, Carlos Quiroz, Fredrik Rantakyrö, Stephen Goodsell

Proceedings Volume 9147, 914750 (2014) https://doi.org/10.1117/12.2057231

KEYWORDS: Gemini Planet Imager, Calibration, Adaptive optics, Gemini Observatory, Mirrors, Wavefront sensors, Observatories, Coronagraphy, Wavefronts, Light sources

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Proceedings Article | 10 July 2014 Paper

Paper

Characterization of the atmospheric dispersion corrector of the Gemini planet imager

Pascale Hibon, Sandrine Thomas, Jennifer Dunn, Jennifer Atwood, Leslie Saddlemyer, Naru Sadakuni, Stephen Goodsell, Bruce Macintosh, James Graham, Marshall Perrin, Fredrik Rantakyro, Vincent Fesquet, Andrew Serio, Carlos Quiroz, Andrew Cardwell, Gaston Gausachs, Dmitry Savransky, Dan Kerley, Markus Hartung, Ramon Galvez, Kayla Hardie

Proceedings Volume 9147, 91474U (2014) https://doi.org/10.1117/12.2055545

KEYWORDS: Gemini Planet Imager, Prisms, Telescopes, Zemax, Gemini Observatory, Coronagraphy, Stars, Solids, Refraction, Data modeling

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Proceedings Article | 8 July 2014 Paper

Paper

The integral field spectrograph for the Gemini planet imager

James Larkin, Jeffrey Chilcote, Theodore Aliado, Brian Bauman, George Brims, John Canfield, Andrew Cardwell, Daren Dillon, René Doyon, Jennifer Dunn, Michael Fitzgerald, James Graham, Stephen Goodsell, Markus Hartung, Pascale Hibon, Patrick Ingraham, Christopher Johnson, Evan Kress, Quinn Konopacky, Bruce Macintosh, Kenneth Magnone, Jerome Maire, Ian McLean, David Palmer, Marshall Perrin, Carlos Quiroz, Fredrik Rantakyrö, Naru Sadakuni, Leslie Saddlemyer, Andrew Serio, Simon Thibault, Sandrine Thomas, Philippe Vallee, Jason Weiss

Proceedings Volume 9147, 91471K (2014) https://doi.org/10.1117/12.2056504

KEYWORDS: Spectrographs, Sensors, Prisms, Gemini Planet Imager, Iterated function systems, Cameras, Optical filters, Planets, Diffraction, Wavefronts

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Proceedings Article | 8 July 2014 Paper

Paper

SPIRou: the near-infrared spectropolarimeter/high-precision velocimeter for the Canada-France-Hawaii telescope

Étienne Artigau, Driss Kouach, Jean-François Donati, René Doyon, Xavier Delfosse, Sébastien Baratchart, Marielle Lacombe, Claire Moutou, Patrick Rabou, Laurent Parès, Yoan Micheau, Simon Thibault, Vladimir Reshetov, Bruno Dubois, Olivier Hernandez, Philippe Vallée, Shiang-Yu Wang, François Dolon, Francesco Pepe, François Bouchy, Nicolas Striebig, François Hénault, David Loop, Leslie Saddlemyer, Gregory Barrick, Tom Vermeulen, Michel Dupieux, Guillaume Hébrard, Isabelle Boisse, Eder Martioli, Silvia Alencar, José-Diaz do Nascimento, Pedro Figueira

Proceedings Volume 9147, 914715 (2014) https://doi.org/10.1117/12.2055663

KEYWORDS: Calibration, Mirrors, Planets, Stars, Spectrographs, Polarimetry, Prisms, Telescopes, Collimation, Cameras

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Proceedings Article | 24 September 2012 Paper

Paper

SPIRou @ CFHT: spectrograph optical design

Simon Thibault, Patrick Rabou, Jean-Francois Donati, Pierre Desaulniers, Xavier Dallaire, Etienne Artigau, Francesco Pepe, Yoan Micheau, Philippe Vallée, Greg Barrick, Vlad Reshetov, Olivier Hernandez, Leslie Saddlemyer, John Pazder, Laurent Parès, Rene Doyon, Xavier Delfosse, Driss Kouach, David Loop

Proceedings Volume 8446, 844630 (2012) https://doi.org/10.1117/12.926697

KEYWORDS: Spectrographs, Sensors, Optical design, Prisms, Mirrors, Cameras, Control systems, Telescopes, Collimation, Image resolution

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Proceedings Article | 24 September 2012 Paper

Paper

Performance of the integral field spectrograph for the Gemini Planet Imager

Jeffrey Chilcote, James Larkin, Jérôme Maire, Marshall Perrin, Michael Fitzgerald, René Doyon, Simon Thibault, Brian Bauman, Bruce Macintosh, James Graham, Les Saddlemyer

Proceedings Volume 8446, 84468W (2012) https://doi.org/10.1117/12.925790

KEYWORDS: Gemini Planet Imager, Iterated function systems, Spectrographs, Sensors, Planets, Adaptive optics, Exoplanets, Polarization, Gemini Observatory, Prisms

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Proceedings Article | 24 September 2012 Paper

Paper

SPIRou @ CFHT: fiber links and pupil slicer

Yoan Micheau, François Bouchy, Francesco Pepe, Bruno Chazelas, Driss Kouach, Laurent Parès, Jean-François Donati, Gregory Barrick, Patrick Rabou, Simon Thibault, Leslie Saddlemyer, Sandrine Perruchot, Xavier Delfosse, Nicolas Striebig, Gérard Gallou, David Loop, John Pazder

Proceedings Volume 8446, 84462R (2012) https://doi.org/10.1117/12.926084

KEYWORDS: Spectrographs, Polarimetry, Mirrors, Cryogenics, Stars, Telescopes, Connectors, Signal attenuation, Fiber science, Interfaces

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Proceedings Article | 24 September 2012 Paper

Paper

SPIRou @ CFHT: data reduction software and simulation tools

Étienne Artigau, François Bouchy, Xavier Delfosse, Xavier Bonfils, Jean-François Donati, Pedro Figueira, Karun Thanjavur, David Lafrenière, René Doyon, Christian Surace, Claire Moutou, Isabelle Boisse, Leslie Saddlemyer, David Loop, Driss Kouach, Francesco Pepe, Christophe Lovis, Olivier Hernandez, Shiang-Yu Wang

Proceedings Volume 8451, 84513I (2012) https://doi.org/10.1117/12.926334

KEYWORDS: Sensors, Calibration, Absorption, Device simulation, Error analysis, Image segmentation, Telescopes, Polarization, Zemax, Spectrographs

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Proceedings Article | 24 September 2012 Paper

Paper

Cryogenic mechanical design: SPIROU spectrograph

Vlad Reshetov, Glen Herriot, Simon Thibault, Pierre Désaulniers, Les Saddlemyer, David Loop

Proceedings Volume 8446, 84464E (2012) https://doi.org/10.1117/12.927442

KEYWORDS: Optical benches, Thermal modeling, Cryocoolers, Cryogenics, Spectrographs, Optical mounts, Mechanical engineering, Optical components, Sensors, Temperature metrology

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Proceedings Article | 24 September 2012 Paper

Paper

The Gemini Planet Imager: integration and status

Bruce Macintosh, Andre Anthony, Jennifer Atwood, Nicolas Barriga, Brian Bauman, Kris Caputa, Jeffery Chilcote, Daren Dillon, René Doyon, Jennifer Dunn, Donald Gavel, Ramon Galvez, Stephen Goodsell, James Graham, Markus Hartung, Joshua Isaacs, Dan Kerley, Quinn Konopacky, Kathleen Labrie, James Larkin, Jerome Maire, Christian Marois, Max Millar-Blanchaer, Arturo Nunez, Ben Oppenheimer, David Palmer, John Pazder, Marshall Perrin, Lisa Poyneer, Carlos Quirez, Frederik Rantakyro, Vlad Reshtov, Leslie Saddlemyer, Naru Sadakuni, Dmitry Savransky, Anand Sivaramakrishnan, Malcolm Smith, Remi Soummer, Sandrine Thomas, J. Kent Wallace, Jason Weiss, Sloane Wiktorowicz

Proceedings Volume 8446, 84461U (2012) https://doi.org/10.1117/12.926721

KEYWORDS: Gemini Planet Imager, Adaptive optics, Iterated function systems, Actuators, Wavefronts, Sensors, Microelectromechanical systems, Coronagraphy, Planets, Stars

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Proceedings Article | 13 September 2012 Paper

Paper

Flexure mount for a MEMS deformable mirror for the Gemini Planet Imager

Alexis Hill, Steven Cornelissen, Daren Dillon, Charlie Lam, Dave Palmer, Les Saddlemyer

Proceedings Volume 8450, 84500H (2012) https://doi.org/10.1117/12.926842

KEYWORDS: Microelectromechanical systems, Gemini Planet Imager, Mirrors, Actuators, Adaptive optics, Humidity, Deformable mirrors, Connectors, Computer aided design, Interfaces

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Proceedings Article | 16 September 2011 Paper

Paper

Integration and test of the Gemini Planet Imager

Sandrine Thomas, Lisa Poyneer, Rob De Rosa, Bruce Macintosh, Daren Dillon, James Wallace, David Palmer, Donald Gavel, Brian Bauman, Leslie Saddlemyer, Stephen Goodsell

Proceedings Volume 8149, 814903 (2011) https://doi.org/10.1117/12.893728

KEYWORDS: Gemini Planet Imager, Adaptive optics, Wavefronts, Wavefront sensors, Spatial filters, Coronagraphy, Calibration, Actuators, Microelectromechanical systems, Cameras

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Proceedings Article | 29 July 2010 Paper

Paper

Imaging polarimetry with the Gemini Planet Imager

Marshall Perrin, James Graham, James Larkin, Sloane Wiktorowicz, Jérôme Maire, Simon Thibault, Michael Fitzgerald, René Doyon, Bruce Macintosh, Donald Gavel, Ben Oppenheimer, David Palmer, Leslie Saddlemyer, J. Kent Wallace

Proceedings Volume 7736, 77365R (2010) https://doi.org/10.1117/12.857741

KEYWORDS: Polarization, Gemini Planet Imager, Polarimetry, Calibration, Gemini Observatory, Adaptive optics, Silver, Prisms, Wave plates, Light scattering

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Proceedings Article | 21 July 2010 Paper

Paper

Gemini Planet Imager coronagraph testbed results

Anand Sivaramakrishnan, Rémi Soummer, Ben Oppenheimer, G. Lawrence Carr, Jacob Mey, Doug Brenner, Charles Mandeville, Neil Zimmerman, Bruce Macintosh, James Graham, Les Saddlemyer, Brian Bauman, Alexis Carlotti, Laurent Pueyo, Peter Tuthill, Christophe Dorrer, Robin Roberts, Alexandra Greenbaum

Proceedings Volume 7735, 773586 (2010) https://doi.org/10.1117/12.858623

KEYWORDS: Coronagraphy, Gemini Planet Imager, Adaptive optics, Wavefronts, Stars, Mirrors, Calibration, Wavefront sensors, Synchrotrons, Gemini Observatory

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Proceedings Article | 20 August 2009 Paper

Paper

The Gemini Planet Imager coronagraph testbed

Rémi Soummer, Anand Sivaramakrishnan, Ben Oppenheimer, Robin Roberts, Douglas Brenner, Alexis Carlotti, Laurent Pueyo, Bruce Macintosh, Brian Bauman, Les Saddlemyer, David Palmer, Darren Erickson, Christophe Dorrer, Kris Caputa, Christian Marois, Kent Wallace, Emily Griffiths, Jacob Mey

Proceedings Volume 7440, 74400R (2009) https://doi.org/10.1117/12.826700

KEYWORDS: Gemini Planet Imager, Coronagraphy, Mirrors, Wavefronts, Point spread functions, Glasses, Apodization, Calibration, Optical testing, Photomasks

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Proceedings Article | 11 July 2008 Paper

Paper

The Gemini Planet Imager: from science to design to construction

Bruce Macintosh, James Graham, David Palmer, René Doyon, Jennifer Dunn, Donald Gavel, James Larkin, Ben Oppenheimer, Les Saddlemyer, Anand Sivaramakrishnan, J. Kent Wallace, Brian Bauman, Darren Erickson, Christian Marois, Lisa Poyneer, Remi Soummer

Proceedings Volume 7015, 701518 (2008) https://doi.org/10.1117/12.788083

KEYWORDS: Gemini Planet Imager, Adaptive optics, Planets, Coronagraphy, Wavefronts, Gemini Observatory, Stars, Wavefront sensors, Atmospheric optics, Telescopes

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Proceedings Article | 27 June 2006 Paper

Paper

The Gemini Planet Imager

Bruce Macintosh, James Graham, David Palmer, Rene Doyon, Don Gavel, James Larkin, Ben Oppenheimer, Leslie Saddlemyer, J. Kent Wallace, Brian Bauman, Julia Evans, Darren Erikson, Katie Morzinski, Donald Phillion, Lisa Poyneer, Anand Sivaramakrishnan, Remi Soummer, Simon Thibault, Jean-Pierre Veran

Proceedings Volume 6272, 62720L (2006) https://doi.org/10.1117/12.672430

KEYWORDS: Wavefronts, Point spread functions, Gemini Planet Imager, Planets, Coronagraphy, Adaptive optics, Calibration, Stars, Wavefront sensors, Spectrographs

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Proceedings Article | 27 June 2006 Paper

Paper

NFIRAOS: TMT narrow field near-infrared facility adaptive optics

Glen Herriot, Paul Hickson, B. Ellerbroek, D. Andersen, T. Davidge, D. Erickson, I. Powell, R. Clare, L. Gilles, C. Boyer, M. Smith, L. Saddlemyer, J.-P. Véran

Proceedings Volume 6272, 62720Q (2006) https://doi.org/10.1117/12.672337

KEYWORDS: Adaptive optics, Telescopes, Mirrors, Sodium, Deformable mirrors, Actuators, Sensors, Stars, Laser guide stars, Thirty Meter Telescope

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Proceedings Article | 25 August 2005 Paper

Paper

NFIRAOS: TMT facility adaptive optics with conventional DMs

Glen Herriot, Paul Hickson, B. Ellerbroek, David Andersen, T. Davidge, D. Erickson, I. Powell, R. Clare, M. Smith, L. Saddlemyer, J.-P. Veran

Proceedings Volume 5903, 590302 (2005) https://doi.org/10.1117/12.617849

KEYWORDS: Adaptive optics, Telescopes, Mirrors, Control systems, Actuators, Deformable mirrors, Sensors, Laser guide stars, Stars, Thirty Meter Telescope

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Although many of the instruments planned for the TMT (Thirty Meter Telescope) have their own closely-coupled adaptive optics systems, TMT will also have a facility Adaptive Optics (AO) system feeding three instruments on the Nasmyth platform. For this Narrow-Field Infrared Adaptive Optics System, NFIRAOS (pronounced nefarious), the TMT project considered two architectures. One, described in this paper, employs conventional deformable mirrors with large diameters of about 300 mm and this is the reference design adopted by the TMT project. An alternative design based on MEMS was also studied, and is being presented separately in this conference. The requirements for NFIRAOS include 0.8-5 microns wavelength range, 30 arcsecond diameter output field of view (FOV), excellent sky coverage, and diffraction- limited atmospheric turbulence compensation (specified at 133 nm RMS including residual telescope and science instrument errors.) The reference design for NFIRAOS includes multiple sodium laser guide stars over a 70 arcsecond FOV, and an infrared tip/tilt/focus/astigmatism natural guide star sensor within instruments. Larger telescopes require greater deformable mirror (DM) stroke. Although initially NFIRAOS will correct a 10 arcsecond science field, it uses two deformable mirrors in series, partly to provide sufficient stroke for atmospheric correction over the 30 m telescope aperture, but mainly to partially correct a 2 arcminute diameter "technical" field to sharpen near-IR natural guide stars and improve sky coverage. The planned upgrade to full performance includes replacing the groundconjugated DM with a higher actuator density, and using a deformable telescope secondary mirror as a "woofer." NFIRAOS incorporates an instrument rotator and selection of three live instruments: a near-Infrared integral field Imaging spectrograph, a near-infrared echelle spectrograph, and after upgrading NFIRAOS to full multi-conjugation, a wide field (30 arcsecond) infrared camera.

Proceedings Article | 25 October 2004 Paper

Paper

Innovations within the Altair real-time wavefront reconstructor

Leslie Saddlemyer, Glen Herriot, Jean-Pierre Vrran, Malcolm Smith, Jennifer Dunn

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552529

KEYWORDS: Control systems, Wavefronts, Adaptive optics, Real-time computing, Stars, Error analysis, Calibration, Gemini Observatory, Mirrors, Actuators

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Proceedings Article | 30 September 2004 Paper

Paper

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

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

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

Paper

Durable coatings for large segmented mirrors

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

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 | 7 July 2004 Paper

Paper

VLOT: a modest Canadian 20-m telescope

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

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

Paper

Integrated modeling of the Canadian Very Large Optical Telescope

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

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 February 2003 Paper

Paper

Performance results of the reconstructor for Altair, the Gemini North AO system

Leslie Saddlemyer, Jennifer Dunn, Malcolm Smith, Glen Herriot, Jean-Pierre Veran

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459245

KEYWORDS: Actuators, Real-time computing, Mirrors, Control systems, Gemini Observatory, Adaptive optics, Wavefronts, Stars, Electronics, Signal processing

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Proceedings Article | 7 February 2003 Paper

Paper

Extendable COTS multicomputer/CPU design for a MCAO control system

Leslie Saddlemyer, Jennifer Dunn, Malcolm Smith, Corinne Boyer

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459248

KEYWORDS: Actuators, Curium, Real-time computing, Control systems design, Adaptive optics, Gemini Observatory, Signal processing, Data processing, Matrix multiplication, Commercial off the shelf technology

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Proceedings Article | 7 February 2003 Paper

Paper

MCAO for Gemini South

Brent Ellerbroek, Francois Rigaut, Brian Bauman, Corinne Boyer, Stephen Browne, Richard Buchroeder, James Catone, Paul Clark, Celine d'Orgeville, Donald Gavel, Glen Herriot, Mark Hunten, Eric James, Edward Kibblewhite, Iain McKinnie, James Murray, Didier Rabaud, Leslie Saddlemyer, Jacques Sebag, James Stillburn, John Telle, Jean-Pierre Veran

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459692

KEYWORDS: Adaptive optics, Telescopes, Gemini Observatory, Control systems, Laser guide stars, Stars, Laser safety, Mirrors, Laser systems engineering, Safety

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Proceedings Article | 4 February 2002 Paper

Paper

Gemini MCAO control system

Corinne Boyer, Jacques Sebag, Mark Hunten, Leslie Saddlemyer

Proceedings Volume 4494, (2002) https://doi.org/10.1117/12.454790

KEYWORDS: Control systems, Mirrors, Adaptive optics, Telescopes, Servomechanisms, Camera shutters, Cameras, Actuators, Gemini Observatory, Wavefront sensors

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Proceedings Article | 7 July 2000 Paper

Paper

Progress on Altair: the Gemini North adaptive optics system

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

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 | 7 July 2000 Paper

Paper

Design and current status of the reconstructor for Altair: the Gemini North adaptive optics system

Leslie Saddlemyer, Glen Herriot, Jean-Pierre Veran

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390362

KEYWORDS: Actuators, Gemini Observatory, Adaptive optics, Control systems, Mirrors, Charge-coupled devices, Curium, Space telescopes, Telescopes, Data processing

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Proceedings Article | 11 September 1998 Paper

Paper

Innovations in Gemini adaptive optics system design

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

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 | 11 September 1998 Paper

Paper

Design aspects of the reconstructor for the Gemini adaptive optics system (Altair)

Leslie Saddlemyer, Glen Herriot, Jean-Pierre Veran, J. Murray Fletcher

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321650

KEYWORDS: Actuators, Gemini Observatory, Telescopes, Adaptive optics, Charge-coupled devices, Telecommunications, Reconstruction algorithms, Mirrors, Signal processing, Control systems

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Proceedings Article | 9 July 1998 Paper

Paper

Gemini multiobject spectrograph: a flexure critical design

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

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 | 9 July 1998 Paper

Paper

Gemini multiobject spectrographs

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

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 | 26 May 1998 Paper

Paper

Plaskett Telescope high-precision line-scan camera encoder project

Leslie Saddlemyer, Gerard McLean

Proceedings Volume 3351, (1998) https://doi.org/10.1117/12.308823

KEYWORDS: Telescopes, Computer programming, Cameras, Sensors, Calibration, Line scan image sensors, Turbulence, Control systems, Detection and tracking algorithms, Digital imaging

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Proceedings Article | 13 October 1997 Paper

Paper

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

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

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

Paper

GMOS: the GEMINI Multiple Object Spectrographs

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

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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Proceedings Article | 21 March 1997 Paper

Paper

Fabrication of narrow-slit masks for the Gemini Multiobject Spectrograph

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

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 | 8 June 1995 Paper

Paper

High-resolution encoding using redundant edge detection

Leslie Saddlemyer, Gerard McLean

Proceedings Volume 2479, (1995) https://doi.org/10.1117/12.211445

KEYWORDS: Computer programming, Telescopes, Edge detection, Error analysis, Computer simulations, Cameras, Particles, Digital imaging, Imaging systems, Charge-coupled devices

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Proceedings Article | 20 October 1993 Paper

Paper

Simple and low-cost infrared imager for the Dominion Astrophysical Observatory

Richard Murowinski, Dennis Derdall, Leslie Saddlemyer, James Stilburn, Robert Wooff, Linzhuang Gao, Timothy Davidge

Proceedings Volume 1946, (1993) https://doi.org/10.1117/12.158685

KEYWORDS: Sensors, Telescopes, Observatories, Infrared detectors, Infrared radiation, Infrared telescopes, Astronomy, Infrared sensors, Cameras, Electronics

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Showing 5 of 47 publications

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