Dr. Donald T. Gavel Profile

Dr. Donald T. Gavel

Director, Lab for Adaptive Optics at Univ of California Santa Cruz

SPIE Involvement:

Author

Publications (140)

Proceedings Article | 30 August 2022 Poster + Paper

Laboratory demonstration of optimal identification and control of tip-tilt systems

Aditya Sengupta, Benjamin Gerard, Daren Dillon, Maaike van Kooten, Donald Gavel, Rebecca Jensen-Clem

Proceedings Volume 12185, 1218578 (2022) https://doi.org/10.1117/12.2630765

KEYWORDS: Control systems, Adaptive optics, Atmospheric modeling, Exoplanets

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Proceedings Article | 10 July 2018 Presentation + Paper

Ground layer adaptive optics for the W. M. Keck Observatory: feasibility study

J. Lu, M. Chun, S. Ammons, K. Bundy, R. Dekany, T. Do, D. Gavel, M. Kassis, O. Lai, C. Martin, C. Max, C. Steidel, L. Wang, K. Westfall, P. Wizinowich

Proceedings Volume 10703, 107030N (2018) https://doi.org/10.1117/12.2314417

KEYWORDS: Telescopes, Image quality, Galactic astronomy, Adaptive optics, Spectrographs, Astronomical imaging, Keck Observatory, Point spread functions, Spectroscopy

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Proceedings Article | 27 July 2016 Paper

Lick Observatory's Shane telescope adaptive optics system (ShaneAO): research directions and progress

Donald Gavel, Renate Kupke, Alexander Rudy, Srikar Srinath, Daren Dillon, Lisa Poyneer

Proceedings Volume 9909, 99092W (2016) https://doi.org/10.1117/12.2233202

KEYWORDS: Adaptive optics, Laser guide stars, Wavefronts, Stars, Wavefront sensors, Data modeling, Sensors, Electroluminescent displays, Error analysis, Monte Carlo methods

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Proceedings Article | 7 August 2014 Paper

Using a deformable mirror to generate custom laser guidestar asterisms: simulation and laboratory results

Andrew Norton, Srikar Srinath, Donald Gavel, Renate Kupke, Daren Dillon

Proceedings Volume 9148, 91483N (2014) https://doi.org/10.1117/12.2057139

KEYWORDS: Deformable mirrors, Adaptive optics, Laser guide stars, Beam splitters, Optical simulations, Microelectromechanical systems, Point spread functions, Cameras, Iris, Image segmentation

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Proceedings Article | 7 August 2014 Paper

Swimming with ShARCS: comparison of on-sky sensitivity with model predictions for ShaneAO on the Lick Observatory 3-meter telescope

Srikar Srinath, Rosalie McGurk, Constance Rockosi, Renate Kupke, Donald Gavel, Gerald Cabak, David Cowley, Michael Peck, Christopher Ratliff, Elinor Gates, Daren Dillon, Andrew Norton, Marc Reining

Proceedings Volume 9148, 91482Z (2014) https://doi.org/10.1117/12.2055672

KEYWORDS: Telescopes, Adaptive optics, Observatories, Signal to noise ratio, Sensors, Imaging systems, Infrared cameras, Mirrors, Photons, Stars

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Proceedings Article | 7 August 2014 Paper

A measurement of the systematic astrometric error in GeMS and the short-term astrometric precision in ShaneAO

S. Ammons, Benoit Neichel, Jessica Lu, Donald Gavel, Srikar Srinath, Rosalie McGurk, Alex Rudy, Connie Rockosi, Christian Marois, Bruce Macintosh, Dmitry Savransky, Raphael Galicher, Eduardo Bendek, Olivier Guyon, Eduardo Marin, Vincent Garrel, Gaetano Sivo

Proceedings Volume 9148, 91481J (2014) https://doi.org/10.1117/12.2057233

KEYWORDS: Stars, Distortion, Adaptive optics, Point spread functions, Planets, Error analysis, Exoplanets, Imaging systems, Observatories, Imaging spectroscopy

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Proceedings Article | 7 August 2014 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 | 7 August 2014 Paper

On-sky low order non-common path correction of the GPI calibration unit

Markus Hartung, Bruce Macintosh, Paul Langlois, Naru Sadakuni, Don Gavel, J. Wallace, Dave Palmer, Lisa Poyneer, Dmitry Savransky, Sandrine Thomas, Daren Dillon, Jennifer Dunn, Pascale Hibon, Fredrik Rantakyrö, Stephen Goodsell

Proceedings Volume 9148, 91485Q (2014) https://doi.org/10.1117/12.2056661

KEYWORDS: Wavefronts, Adaptive optics, Gemini Planet Imager, Telescopes, Calibration, Wavefront sensors, Gemini Observatory, Spherical lenses, Stars, Speckle

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Proceedings Article | 7 August 2014 Paper

Woofer-tweeter deformable mirror control for closed-loop adaptive optics: theory and practice

Donald Gavel, Andrew Norton

Proceedings Volume 9148, 91484J (2014) https://doi.org/10.1117/12.2056937

KEYWORDS: Actuators, Wavefronts, Adaptive optics, Deformable mirrors, Mirrors, Control systems, Space telescopes, Space mirrors, Wavefront sensors

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Proceedings Article | 28 July 2014 Paper

Fluoride damage to substrates during stripping of mirrors

Andrew Phillips, Brian DuPraw, David Hilyard, Donald Gavel, Daren Dillon, Renate Kupke

Proceedings Volume 9151, 91515I (2014) https://doi.org/10.1117/12.2056887

KEYWORDS: Mirrors, Optical coatings, Reflectivity, Silica, Silver, Adaptive optics, Observatories, Zerodur, Glasses, Magnesium fluoride

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Proceedings Article | 21 July 2014 Paper

Commissioning ShARCS: the Shane adaptive optics infrared camera-spectrograph for the Lick Observatory Shane 3-m telescope

Rosalie McGurk, Constance Rockosi, Donald Gavel, Renate Kupke, Michael Peck, Terry Pfister, Jim Ward, William Deich, John Gates, Elinor Gates, Barry Alcott, David Cowley, Daren Dillon, Kyle Lanclos, Dale Sandford, Mike Saylor, Srikar Srinath, Jason Weiss, Andrew Norton

Proceedings Volume 9148, 91483A (2014) https://doi.org/10.1117/12.2057027

KEYWORDS: Adaptive optics, Sensors, Infrared cameras, Infrared telescopes, Optical filters, Cameras, Observatories, Telescopes, Image filtering, Infrared radiation

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Proceedings Article | 21 July 2014 Paper

Opto-mechanical design of ShaneAO: the adaptive optics system for the 3-meter Shane Telescope

C. Ratliff, J. Cabak, D. Gavel, R. Kupke, D. Dillon, E. Gates, W. Deich, J. Ward, D. Cowley, T. Pfister, M. Saylor

Proceedings Volume 9148, 91483B (2014) https://doi.org/10.1117/12.2057064

KEYWORDS: Adaptive optics, Telescopes, Microelectromechanical systems, Cameras, Aluminum, Wavefront sensors, Optical benches, Optomechanical design, Mirrors, Deformable mirrors

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Proceedings Article | 21 July 2014 Paper

Progress towards wind predictive control on ShaneAO: test bench results

Alexander Rudy, Srikar Srinath, Lisa Poyneer, S. Ammons, Don Gavel, Renate Kupke, Darren Dillon, Constance Rockosi

Proceedings Volume 9148, 91481Z (2014) https://doi.org/10.1117/12.2057194

KEYWORDS: Adaptive optics, Turbulence, Control systems, Actuators, Telescopes, Mirrors, Filtering (signal processing), Atmospheric modeling, Spatial frequencies, Wavefronts

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Proceedings Article | 21 July 2014 Paper

ShaneAO: wide science spectrum adaptive optics system for the Lick Observatory

Donald Gavel, Renate Kupke, Daren Dillon, Andrew Norton, Chris Ratliff, Jerry Cabak, Andrew Phillips, Connie Rockosi, Rosalie McGurk, Srikar Srinath, Michael Peck, William Deich, Kyle Lanclos, John Gates, Michael Saylor, Jim Ward, Terry Pfister

Proceedings Volume 9148, 914805 (2014) https://doi.org/10.1117/12.2055256

KEYWORDS: Adaptive optics, Stars, Wavefront sensors, Sensors, Electroluminescent displays, Point spread functions, Imaging systems, Telescopes, Cameras, Observatories

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Proceedings Article | 21 July 2014 Paper

Laser guidestar uplink correction using a MEMS deformable mirror: on-sky test results and implications for future AO systems

Andrew Norton, Donald Gavel, Michael Helmbrecht, Carl Kempf, Elinor Gates, Kostas Chloros, Donnie Redel, Renate Kupke, Daren Dillon

Proceedings Volume 9148, 91481C (2014) https://doi.org/10.1117/12.2055564

KEYWORDS: Adaptive optics, Deformable mirrors, Laser guide stars, Cameras, Microelectromechanical systems, Sodium, Telescopes, Wavefronts, Prisms, Diagnostics

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Proceedings Article | 21 July 2014 Paper

On-sky performance during verification and commissioning of the Gemini Planet Imager's adaptive optics system

Lisa Poyneer, Robert De Rosa, Bruce Macintosh, David Palmer, Marshall Perrin, Naru Sadakuni, Dmitry Savransky, Brian Bauman, Andrew Cardwell, Jeffrey Chilcote, Daren Dillon, Donald Gavel, Stephen Goodsell, Markus Hartung, Pascale Hibon, Fredrik Rantakyrö, Sandrine Thomas, Jean-Pierre Veran

Proceedings Volume 9148, 91480K (2014) https://doi.org/10.1117/12.2057092

KEYWORDS: Adaptive optics, Gemini Planet Imager, Error analysis, Wavefront sensors, Spatial frequencies, Cryocoolers, Actuators, Interference (communication), Wavefronts, Stars

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Proceedings Article | 5 March 2013 Paper

Performance assessment of a candidate architecture for real-time woofer-tweeter controllers: simulation and experimental results

Andrew Norton, Don Gavel, Renate Kupke, Marc Reinig, Srikar Srinath, Daren Dillon

Proceedings Volume 8617, 86170A (2013) https://doi.org/10.1117/12.2000666

KEYWORDS: Actuators, Adaptive optics, Deformable mirrors, Microelectromechanical systems, Telescopes, Mirrors, Space telescopes, Wavefronts, Device simulation, Computer architecture

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Proceedings Article | 24 September 2012 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

ShaneAO: an enhanced adaptive optics and IR imaging system for the Lick Observatory 3-meter telescope

Renate Kupke, Donald Gavel, Constance Roskosi, Gerald Cabak, David Cowley, Daren Dillon, Elinor Gates, Rosalie McGurk, Andrew Norton, Michael Peck, Christopher Ratliff, Marco Reinig

Proceedings Volume 8447, 84473G (2012) https://doi.org/10.1117/12.926470

KEYWORDS: Adaptive optics, Telescopes, Laser guide stars, Deformable mirrors, Wavefront sensors, Sensors, Cameras, Observatories, Mirrors, Imaging systems

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Proceedings Article | 13 September 2012 Paper

Evidence that wind prediction with multiple guide stars reduces tomographic errors and expands MOAO field of regard

S. Mark Ammons, Lisa Poyneer, Donald Gavel, Renate Kupke, Claire Max, Luke Johnson

Proceedings Volume 8447, 84471U (2012) https://doi.org/10.1117/12.927283

KEYWORDS: Tomography, Stars, Wavefronts, Error analysis, Adaptive optics, Laser guide stars, Wavefront sensors, Turbulence, Telescopes, Statistical analysis

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Proceedings Article | 13 September 2012 Paper

An overview of guidestar laser technologies

Donald Gavel

Proceedings Volume 8447, 84470E (2012) https://doi.org/10.1117/12.927023

KEYWORDS: Adaptive optics, Laser guide stars, Sodium, Chemical species, Telescopes, Doppler effect, Observatories, Laser applications, Pulsed laser operation, Laser systems engineering

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Proceedings Article | 13 September 2012 Paper

Investigations of long pulse sodium laser guide stars

Rachel Rampy, Donald Gavel, Simon Rochester, Ronald Holzlöhner

Proceedings Volume 8447, 84474L (2012) https://doi.org/10.1117/12.926621

KEYWORDS: Sodium, Chemical species, Telescopes, Adaptive optics, Mesosphere, Fiber lasers, Laser guide stars, Dye lasers, Optical simulations, Device simulation

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Proceedings Article | 13 September 2012 Paper

Wavefront sensing and correction with the Gemini Planet Imager

S. Thomas, L. Poyneer, D. Savransky, B. Macintosh, M. Hartung, D. Dillon, D. Gavel, Jennifer Dunn, K. Wallace, D. Palmer, Robert De Rosa

Proceedings Volume 8447, 844714 (2012) https://doi.org/10.1117/12.926680

KEYWORDS: Wavefront sensors, Wavefronts, Gemini Planet Imager, Adaptive optics, Coronagraphy, Calibration, Microelectromechanical systems, Speckle, Actuators, Gemini Observatory

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Proceedings Article | 15 February 2012 Paper

MEMS practice: from the lab to the telescope

Katie Morzinski, Andrew Norton, Julia Evans, Layra Reza, Scott Severson, Daren Dillon, Marc Reinig, Donald Gavel, Steven Cornelissen, Bruce Macintosh, Claire Max

Proceedings Volume 8253, 825304 (2012) https://doi.org/10.1117/12.910964

KEYWORDS: Microelectromechanical systems, Actuators, Adaptive optics, Gemini Planet Imager, Telescopes, Deformable mirrors, Calibration, Humidity, Inspection, Wavefronts

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Proceedings Article | 23 September 2011 Paper

Laser testing of an Iris AO dielectric-coated segmented MEMS DM

Michael Helmbrecht, Min He, Andrew Norton, Donald Gavel

Proceedings Volume 8165, 81650U (2011) https://doi.org/10.1117/12.894984

KEYWORDS: Mirrors, Image segmentation, Dielectrics, Microelectromechanical systems, Reflectivity, Adaptive optics, Optical coatings, Iris, Photovoltaics, Laser applications

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Proceedings Article | 16 September 2011 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 | 14 February 2011 Paper

Adaptive optics wide-field microscope corrections using a MEMS DM and Shack-Hartmann wavefront sensor

Oscar Azucena, Xiaodong Tao, Justin Crest, Shaila Kotadia, William Sullivan, Donald Gavel, Marc Reinig, Scot Olivier, Joel Kubby

Proceedings Volume 7931, 79310J (2011) https://doi.org/10.1117/12.876439

KEYWORDS: Adaptive optics, Wavefront sensors, Microscopes, Wavefronts, Imaging systems, Objectives, Actuators, Cameras, Deformable mirrors, Microelectromechanical systems

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Proceedings Article | 11 February 2011 Paper

Development of an enhanced adaptive optics system for the Lick Observatory Shane 3-meter Telescope

Donald Gavel

Proceedings Volume 7931, 793103 (2011) https://doi.org/10.1117/12.876413

KEYWORDS: Adaptive optics, Telescopes, Microelectromechanical systems, Wavefronts, Actuators, Stars, Laser guide stars, Wavefront sensors, Sensors, Deformable mirrors

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Proceedings Article | 29 July 2010 Paper

High-power visible laser effect on a Boston Micromachines' MEMS deformable mirror

Andrew Norton, Donald Gavel, Daren Dillon, Steven Cornelissen

Proceedings Volume 7736, 77365O (2010) https://doi.org/10.1117/12.856635

KEYWORDS: Microelectromechanical systems, Deformable mirrors, High power lasers, Adaptive optics, Current controlled current source, Visible radiation, Silver, Aluminum, Spatial frequencies, Actuators

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Proceedings Article | 29 July 2010 Paper

New method of fabricating phase screens for simulated atmospheric turbulence

Rachel Rampy, Donald Gavel, Daren Dillon, Sandrine Thomas

Proceedings Volume 7736, 77362Y (2010) https://doi.org/10.1117/12.856517

KEYWORDS: Adaptive optics, Turbulence, Glasses, Atmospheric turbulence, Telescopes, Calibration, Observatories, Atmospheric optics, Optical fabrication, Phase measurement

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Proceedings Article | 29 July 2010 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 | 28 July 2010 Paper

Performance of MEMS-based visible-light adaptive optics at Lick Observatory: closed- and open-loop control

Katie Morzinski, Luke Johnson, Donald Gavel, Bryant Grigsby, Daren Dillon, Marc Reinig, Bruce Macintosh

Proceedings Volume 7736, 77361O (2010) https://doi.org/10.1117/12.857444

KEYWORDS: Adaptive optics, Microelectromechanical systems, Wavefronts, Point spread functions, Cameras, Observatories, Wavefront sensors, Actuators, Deformable mirrors, Telescopes

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Proceedings Article | 28 July 2010 Paper

Online wind estimation and prediction for a two-layer frozen flow atmosphere

Luke Johnson, Donald Gavel, Donald Wiberg

Proceedings Volume 7736, 77362R (2010) https://doi.org/10.1117/12.857704

KEYWORDS: Wavefronts, Signal to noise ratio, Adaptive optics, Wavefront sensors, Atmospheric optics, Turbulence, Control systems, Deformable mirrors, Atmospheric modeling, Atmospheric sensing

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Proceedings Article | 28 July 2010 Paper

W. M. Keck Observatory's next-generation adaptive optics facility

P. Wizinowich, S. Adkins, R. Dekany, D. Gavel, C. Max, R. Bartos, J. Bell, A. Bouchez, J. Chin, A. Conrad, A. Delacroix, E. Johansson, R. Kupke, C. Lockwood, J. Lyke, F. Marchis, E. McGrath, D. Medeiros, M. Morris, D. Morrison, C. Neyman, S. Panteleev, M. Pollard, M. Reinig, T. Stalcup, S. Thomas, M. Troy, K. Tsubota, V. Velur, K. Wallace, E. Wetherell

Proceedings Volume 7736, 77360K (2010) https://doi.org/10.1117/12.857628

KEYWORDS: Adaptive optics, Telescopes, Wavefront sensors, Stars, Tomography, Control systems, Keck Observatory, Galactic astronomy, Wavefronts, Sensors

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Proceedings Article | 28 July 2010 Paper

Real-time control for Keck Observatory next-generation adaptive optics

Marc Reinig, Donald Gavel, Ehsan Ardestani, Jose Renau

Proceedings Volume 7736, 77363J (2010) https://doi.org/10.1117/12.857579

KEYWORDS: Tomography, Real-time computing, Cameras, Adaptive optics, Control systems, Stars, Wavefronts, Infrared cameras, Field programmable gate arrays, Process control

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Proceedings Article | 16 July 2010 Paper

Data reduction pipeline for the Gemini Planet Imager

Jérôme Maire, Marshall Perrin, René Doyon, Etienne Artigau, Jennifer Dunn, Donald Gavel, James Graham, David Lafrenière, James Larkin, Jean-François Lavigne, Bruce Macintosh, Christian Marois, Ben Oppenheimer, David Palmer, Lisa Poyneer, Simon Thibault, Jean-Pierre Véran

Proceedings Volume 7735, 773531 (2010) https://doi.org/10.1117/12.858028

KEYWORDS: Gemini Planet Imager, Calibration, Stars, Iterated function systems, Polarimetry, Gemini Observatory, Polarization, Adaptive optics, Speckle, Spectroscopes

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Proceedings Article | 15 July 2010 Paper

Experimental demonstration of laser tomographic adaptive optics on a 30-meter telescope at 800 nm

S, Mark Ammons, Luke Johnson, Renate Kupke, Donald Gavel, Claire Max

Proceedings Volume 7736, 773626 (2010) https://doi.org/10.1117/12.857873

KEYWORDS: Tomography, Adaptive optics, Wavefront sensors, Stars, Telescopes, Calibration, Point spread functions, Device simulation, Wavefronts, Laser guide stars

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Proceedings Article | 14 July 2010 Paper

Laboratory test of application of electric field conjugation image-sharpening to ground-based adaptive optics

Sandrine Thomas, Amir Give'on, Daren Dillon, Bruce Macintosh, Donald Gavel, Remi Soummer

Proceedings Volume 7736, 77365L (2010) https://doi.org/10.1117/12.857511

KEYWORDS: Wavefronts, Adaptive optics, Actuators, Microelectromechanical systems, Coronagraphy, Wavefront sensors, Deformable mirrors, Space telescopes, Cameras, Mirrors

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Proceedings Article | 14 July 2010 Paper

Performance of a Shack-Hartmann wavefront sensor using real sodium laser data

Sandrine Thomas, Donald Gavel, Nicolas Muller, Vincent Michau, Thierry Fusco

Proceedings Volume 7736, 77365F (2010) https://doi.org/10.1117/12.857600

KEYWORDS: Charge-coupled devices, Sodium, Wavefront sensors, Telescopes, Laser guide stars, Wavefronts, Adaptive optics, Signal to noise ratio, Reconstruction algorithms, Photons

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Proceedings Article | 13 July 2010 Paper

Wavefront control algorithms for the Keck next-generation adaptive optics system

Donald Gavel, Marc Reinig

Proceedings Volume 7736, 773616 (2010) https://doi.org/10.1117/12.857738

KEYWORDS: Wavefronts, Wavefront sensors, Actuators, Real-time computing, Tomography, Adaptive optics, Spatial frequencies, Telescopes, Reconstruction algorithms, Deformable mirrors

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Proceedings Article | 18 February 2010 Paper

Implementation of adaptive optics in fluorescent microscopy using wavefront sensing and correction

Oscar Azucena, Justin Crest, Jian Cao, William Sullivan, Peter Kner, Donald Gavel, Daren Dillon, Scot Olivier, Joel Kubby

Proceedings Volume 7595, 75950I (2010) https://doi.org/10.1117/12.846380

KEYWORDS: Adaptive optics, Wavefront sensors, Wavefronts, Microscopes, Microscopy, Confocal microscopy, Deformable mirrors, Objectives, Cameras, Diffraction

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Proceedings Article | 18 February 2010 Paper

Progress update on the visible light laser guidestar experiments at Lick Observatory

Donald Gavel

Proceedings Volume 7595, 759508 (2010) https://doi.org/10.1117/12.846773

KEYWORDS: Adaptive optics, Laser guide stars, Microelectromechanical systems, Deformable mirrors, Wavefront sensors, Telescopes, Wavefronts, Sensors, Observatories, Sodium

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Proceedings Article | 18 February 2010 Paper

High-power visible-laser effect on a 37-segment Iris AO deformable mirror

Andrew Norton, Donald Gavel, Daren Dillon

Proceedings Volume 7595, 759506 (2010) https://doi.org/10.1117/12.846037

KEYWORDS: Adaptive optics, Iris, Deformable mirrors, Mirrors, Microelectromechanical systems, Laser guide stars, Current controlled current source, Laser energy, Annealing, Mirror stabilization

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Proceedings Article | 20 August 2009 Paper

Detecting and characterizing exoplanets with a 1.4-m space telescope: the Pupil mapping Exoplanet Coronagraphic Observer (PECO)

Olivier Guyon, James R. Angel, Ruslan Belikov, Robert Egerman, Donald Gavel, Amir Give'on, Thomas Greene, Kerri Cahoy, Brian Kern, Marie Levine, Stephen Ridgway, Stuart Shaklan, Domenick Tenerelli, Robert Vanderbei, Robert Woodruff

Proceedings Volume 7440, 74400F (2009) https://doi.org/10.1117/12.826350

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Wavefronts, Exoplanets, Planets, Mirrors, Stars, Apodization, Optical design

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Proceedings Article | 24 February 2009 Paper

Implementation of a Shack-Hartmann wavefront sensor for the measurement of embryo-induced aberrations using fluorescent microscopy

Oscar Azucena, Joel Kubby, Justin Crest, Jian Cao, William Sullivan, Peter Kner, Donald Gavel, Daren Dillon, Scot Olivier

Proceedings Volume 7209, 720906 (2009) https://doi.org/10.1117/12.809633

KEYWORDS: Wavefronts, Adaptive optics, Wavefront sensors, Objectives, Point spread functions, Microscopy, Microscopes, Image sensors, Sensors, Cameras

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Proceedings Article | 24 February 2009 Paper

MEMS devices in future astronomical telescope adaptive optics instruments

Donald Gavel

Proceedings Volume 7209, 72090E (2009) https://doi.org/10.1117/12.812084

KEYWORDS: Microelectromechanical systems, Adaptive optics, Telescopes, Actuators, Deformable mirrors, Stars, Astronomy, Mirrors, Astronomical telescopes, Observatories

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Proceedings Article | 24 February 2009 Paper

Preliminary characterization of Boston Micromachines' 4096-actuator deformable mirror

Andrew Norton, Julia Evans, Donald Gavel, Daren Dillon, David Palmer, Bruce Macintosh, Katie Morzinski, Steven Cornelissen

Proceedings Volume 7209, 72090I (2009) https://doi.org/10.1117/12.811681

KEYWORDS: Actuators, Adaptive optics, Microelectromechanical systems, Deformable mirrors, Gemini Planet Imager, Spatial frequencies, Wavefronts, Mirrors, Telescopes, Surface finishing

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Proceedings Article | 8 August 2008 Paper

W. M. Keck Observatory's next-generation adaptive optics facility

P. Wizinowich, R. Dekany, D. Gavel, C. Max, S. Adkins, B. Bauman, J. Bell, A. Bouchez, M. Britton, J. Chin, R. Flicker, E. Johansson, R. Kupke, D. Le Mignant, C. Lockwood, D. Medeiros, E. McGrath, A. Moore, C. Neyman, M. Reinig, V. Velur

Proceedings Volume 7015, 701511 (2008) https://doi.org/10.1117/12.790154

KEYWORDS: Adaptive optics, Wavefront sensors, Telescopes, Wavefronts, Stars, Control systems, Sensors, Relays, Point spread functions, Tomography

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Proceedings Article | 23 July 2008 Paper

ViLLaGEs: opto-mechanical design of an on-sky visible-light MEMS-based AO system

Bryant Grigsby, Chris Lockwood, Brian Baumann, Don Gavel, Jess Johnson, S. Mark Ammons, Daren Dillon, Katie Morzinski, Marc Reinig, Dave Palmer, Scott Severson, Elinor Gates

Proceedings Volume 7018, 701841 (2008) https://doi.org/10.1117/12.790166

KEYWORDS: Telescopes, Adaptive optics, Microelectromechanical systems, Stars, Cameras, Observatories, Nickel, Mirrors, Optical benches, Wavefront sensors

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Proceedings Article | 17 July 2008 Paper

Testing the APLC on the LAO ExAO testbed

Sandrine Thomas, Rémi Soummer, Daren Dillon, Bruce Macintosh, Julia Evans, Donald Gavel, Anand Sivaramakrishnan, Christian Marois, Ben Oppenheimer

Proceedings Volume 7015, 70156I (2008) https://doi.org/10.1117/12.789691

KEYWORDS: Coronagraphy, Wavefronts, Microelectromechanical systems, Adaptive optics, Mirrors, Planets, Gemini Planet Imager, Manufacturing, Stars, Point spread functions

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Proceedings Article | 16 July 2008 Paper

Laboratory demonstrations of multi-object adaptive optics in the visible on a 10 meter telescope

S. Mark Ammons, Luke Johnson, Edward Laag, Renate Kupke, Donald Gavel

Proceedings Volume 7015, 70150C (2008) https://doi.org/10.1117/12.790188

KEYWORDS: Stars, Adaptive optics, Tomography, Telescopes, Wavefront sensors, Atmospheric optics, Deformable mirrors, Laser guide stars, Wavefronts, Turbulence

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Proceedings Article | 16 July 2008 Paper

Empirical measurement of MEMS stroke saturation, with implications for woofer-tweeter architectures

Katie Morzinski, Bruce Macintosh, Daren Dillon, Don Gavel, Dave Palmer, Andrew Norton

Proceedings Volume 7015, 70153N (2008) https://doi.org/10.1117/12.788091

KEYWORDS: Microelectromechanical systems, Actuators, Gemini Planet Imager, Spatial frequencies, Adaptive optics, Gemini Observatory, Wavefronts, Coronagraphy, Telescopes, Exoplanets

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Proceedings Article | 15 July 2008 Paper

Concept for the Keck Next Generation Adaptive Optics system

Donald Gavel, Richard Dekany, Claire Max, Peter Wizinowich, Sean Adkins, Brian Bauman, Jim Bell, Erik Johansson, Renate Kupke, Chris Lockwood, Anna Moore, Chris Neyman, Marc Reinig, Viswa Velur

Proceedings Volume 7015, 701567 (2008) https://doi.org/10.1117/12.790250

KEYWORDS: Adaptive optics, Relays, Stars, Sensors, Wavefront sensors, Mirrors, Laser guide stars, Wavefronts, Microelectromechanical systems, Control systems

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Proceedings Article | 15 July 2008 Paper

Contrast analysis and stability on the ExAO testbed

Julia Evans, Sandrine Thomas, Donald Gavel, Daren Dillon, Bruce Macintosh

Proceedings Volume 7015, 70156K (2008) https://doi.org/10.1117/12.789452

KEYWORDS: Microelectromechanical systems, Point spread functions, Speckle pattern, Mirrors, Motion measurement, Adaptive optics, Diffraction, Coronagraphy, Wavefronts, Thermal effects

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Proceedings Article | 15 July 2008 Paper

Analysis of on-sky sodium profile data and implications for LGS AO wavefront sensing

Sandrine Thomas, Donald Gavel, Sean Adkins, Bob Kibrick

Proceedings Volume 7015, 70155L (2008) https://doi.org/10.1117/12.789661

KEYWORDS: Sodium, Adaptive optics, Wavefront sensors, Laser guide stars, Stars, Nickel, Astronomical adaptive optics, Chemical species, Mesosphere, Thirty Meter Telescope

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Proceedings Article | 15 July 2008 Paper

Implementation of the pyramid wavefront sensor as a direct phase detector for large amplitude aberrations

Renate Kupke, Don Gavel, Jess Johnson, Marc Reinig

Proceedings Volume 7015, 70155H (2008) https://doi.org/10.1117/12.790181

KEYWORDS: Sensors, Adaptive optics, Reconstruction algorithms, Monte Carlo methods, Telescopes, Wavefront sensors, Spatial frequencies, Polonium, Photon transport, Wave propagation

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Proceedings Article | 14 July 2008 Paper

Application of Hartmann linear calibrations to ViLLaGEs

S. Mark Ammons, Donald Gavel, Daren Dillon, Marco Reinig, Bryant Grigsby, Katie Morzinski

Proceedings Volume 7015, 701546 (2008) https://doi.org/10.1117/12.789816

KEYWORDS: Wavefront sensors, Calibration, Adaptive optics, Sensors, Raster graphics, Point spread functions, Telescopes, Deformable mirrors, Device simulation, Laser guide stars

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Proceedings Article | 12 July 2008 Paper

Pupil mapping Exoplanet Coronagraphic Observer (PECO)

Olivier Guyon, James Angel, Dana Backman, Ruslan Belikov, Donald Gavel, Amir Giveon, Thomas Greene, Jeremy Kasdin, James Kasting, Marie Levine, Mark Marley, Michael Meyer, Glenn Schneider, Gene Serabyn, Stuart Shaklan, Michael Shao, Motohide Tamura, Domenick Tenerelli, Wesley Traub, John Trauger, Robert Vanderbei, Robert Woodruff, Neville Woolf, Jeffrey Wynn

Proceedings Volume 7010, 70101Y (2008) https://doi.org/10.1117/12.790080

KEYWORDS: Coronagraphy, Planets, Wavefronts, Telescopes, Stars, Exoplanets, Mirrors, Apodization, Space telescopes, Wavefront sensors

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Proceedings Article | 11 July 2008 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 | 11 July 2008 Paper

Wind estimation and prediction for adaptive optics control systems

Luke Johnson, Donald Gavel, Marc Reinig, Donald Wiberg

Proceedings Volume 7015, 70153F (2008) https://doi.org/10.1117/12.790143

KEYWORDS: Adaptive optics, Wavefronts, Wavefront sensors, Device simulation, Turbulence, Deformable mirrors, Control systems, Telescopes, Tomography, Atmospheric modeling

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Proceedings Article | 10 July 2008 Paper

Laser technology for astronomical adaptive optics

Donald Gavel

Proceedings Volume 7015, 70150J (2008) https://doi.org/10.1117/12.796637

KEYWORDS: Sodium, Laser applications, Chemical species, Laser guide stars, Pulsed laser operation, Adaptive optics, Telescopes, Doppler effect, Optical pumping, Sodium guide stars

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Proceedings Article | 10 July 2008 Paper

The science case for the Next Generation AO system at W. M. Keck Observatory

C. Max, E. McGrath, D. Gavel, D. Le Mignant, P. Wizinowich, R. Dekany

Proceedings Volume 7015, 701507 (2008) https://doi.org/10.1117/12.790173

KEYWORDS: Adaptive optics, Stars, Galactic astronomy, Planets, Asteroids, Spectrographs, Keck Observatory, Telescopes, K band, Kinematics

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Proceedings Article | 7 July 2008 Paper

Visible light laser guidestar experimental system (Villages): on-sky tests of new technologies for visible wavelength all-sky coverage adaptive optics systems

Donald Gavel, S. Mark Ammons, Brian Bauman, Daren Dillon, Elinor Gates, Bryant Grigsby, Jess Johnson, Chris Lockwood, Kathleen Morzinski, David Palmer, Marc Reinig, Scott Severson

Proceedings Volume 7015, 70150G (2008) https://doi.org/10.1117/12.790228

KEYWORDS: Adaptive optics, Wavefront sensors, Stars, Laser guide stars, Wavefronts, Sensors, Telescopes, Microelectromechanical systems, Sodium, Pulsed laser operation

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Proceedings Article | 27 February 2008 Paper

Amplitude variations on the ExAO testbed: Part II

Sandrine Thomas, Julia Evans, Donald Phillion, Donald Gavel, Daren Dillon, Bruce Macintosh

Proceedings Volume 6888, 68880J (2008) https://doi.org/10.1117/12.771766

KEYWORDS: Microelectromechanical systems, Mirrors, Reflectivity, Actuators, Adaptive optics, Wavefronts, Interferometers, Gold, Spectroscopy, Diffraction

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Proceedings Article | 12 February 2008 Paper

Characterizing MEMS deformable mirrors for open-loop operation: high-resolution measurements of thin-plate behavior

Katie Morzinski, Donald Gavel, Andrew Norton, Daren Dillon, Marco Reinig

Proceedings Volume 6888, 68880S (2008) https://doi.org/10.1117/12.773555

KEYWORDS: Microelectromechanical systems, Actuators, Adaptive optics, Deformable mirrors, Mirrors, Calibration, Interferometers, Wavefronts, Observatories, Control systems

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Proceedings Article | 6 February 2008 Paper

Villages: an on-sky visible wavelength astronomy AO experiment using a MEMS deformable mirror

Donald Gavel, Scott Severson, Brian Bauman, Daren Dillon, Marco Reinig, Christopher Lockwood, Dave Palmer, Kathleen Morzinski, S. Mark Ammons, Elinor Gates, Bryant Grigsby

Proceedings Volume 6888, 688804 (2008) https://doi.org/10.1117/12.772406

KEYWORDS: Microelectromechanical systems, Adaptive optics, Deformable mirrors, Telescopes, Wavefronts, Nickel, Laser guide stars, Wavefront sensors, Actuators, Cameras

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Proceedings Article | 19 September 2007 Paper

Amplitude variations on the ExAO testbed

Julia Evans, Sandrine Thomas, Daren Dillon, Donald Gavel, Donald Phillion, Bruce Macintosh

Proceedings Volume 6693, 669312 (2007) https://doi.org/10.1117/12.735741

KEYWORDS: Microelectromechanical systems, Phase measurement, Reflectivity, Mirrors, Wavefronts, Charge-coupled devices, Gold, Adaptive optics, Diffraction, Spatial frequencies

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Proceedings Article | 12 September 2007 Paper

Enabling laboratory demonstrations of multi-object adaptive optics with linearity calibrations

S. Mark Ammons, Edward Laag, Renate Kupke, Donald Gavel, Claire Max

Proceedings Volume 6691, 669108 (2007) https://doi.org/10.1117/12.735085

KEYWORDS: Wavefront sensors, Tomography, Wavefronts, Adaptive optics, Stars, Calibration, Deformable mirrors, Sensors, Laser guide stars, Atmospheric sciences

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Proceedings Article | 15 February 2007 Paper

The open-loop control of MEMS: modeling and experimental results

Katie Morzinski, Kennet B. Harpsøe, Don Gavel, S. Mark Ammons

Proceedings Volume 6467, 64670G (2007) https://doi.org/10.1117/12.710428

KEYWORDS: Actuators, Microelectromechanical systems, Adaptive optics, Deformable mirrors, Calibration, Wavefront sensors, Mathematical modeling, Wavefronts, Mirrors, Interferometers

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Proceedings Article | 6 February 2007 Paper

MEMS development for astronomical instrumentation at the Lick Observatory Laboratory for Adaptive Optics

Donald Gavel

Proceedings Volume 6467, 646702 (2007) https://doi.org/10.1117/12.710419

KEYWORDS: Microelectromechanical systems, Actuators, Adaptive optics, Wavefronts, Mirrors, Deformable mirrors, Observatories, Astronomy, Telescopes, Stars

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Proceedings Article | 11 July 2006 Paper

The MOAO system of the IRMOS near-infrared multi-object spectrograph for TMT

David Andersen, Stephen Eikenberry, Murray Fletcher, William Gardhouse, Brian Leckie, Jean-Pierre Véran, Don Gavel, Richard Clare, Rafael Guzman, Laurent Jolissaint, Roger Julian, William Rambold

Proceedings Volume 6269, 62694K (2006) https://doi.org/10.1117/12.672177

KEYWORDS: Molybdenum, Mirrors, Monochromatic aberrations, Adaptive optics, Point spread functions, Actuators, Tomography, Charge-coupled devices, Telescopes, Microelectromechanical systems

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Proceedings Article | 28 June 2006 Paper

The Extreme Adaptive Optics Testbed at UCSC: current results and coronagraphic upgrade

Scott Severson, Brian Bauman, Daren Dillon, Julia Evans, Don Gavel, Bruce Macintosh, Katie Morzinski, Dave Palmer, Lisa Poyneer

Proceedings Volume 6272, 62722J (2006) https://doi.org/10.1117/12.672341

KEYWORDS: Wavefronts, Microelectromechanical systems, Actuators, Coronagraphy, Adaptive optics, Gemini Planet Imager, Wavefront sensors, Spatial frequencies, Optical testing, Point spread functions

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Proceedings Article | 28 June 2006 Paper

Characterizing the potential of MEMS deformable mirrors for astronomical adaptive optics

Katie Morzinski, Julia Evans, Scott Severson, Bruce Macintosh, Daren Dillon, Don Gavel, Claire Max, Dave Palmer

Proceedings Volume 6272, 627221 (2006) https://doi.org/10.1117/12.672470

KEYWORDS: Actuators, Microelectromechanical systems, Spatial frequencies, Deformable mirrors, Adaptive optics, Mirrors, Wavefronts, Gemini Planet Imager, Optical testing, Surface finishing

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Proceedings Article | 28 June 2006 Paper

Lick Observatory adaptive optics wavefront sensor upgrades

David Palmer, Donald Gavel, Elinor Gates

Proceedings Volume 6272, 62721D (2006) https://doi.org/10.1117/12.672307

KEYWORDS: Cameras, Adaptive optics, Stars, Sensors, Avalanche photodetectors, CCD cameras, Wavefront sensors, Observatories, Laser guide stars, Telescopes

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Proceedings Article | 28 June 2006 Paper

Laboratory for adaptive optics at UC Santa Cruz: project status and plans

Donald Gavel

Proceedings Volume 6272, 62721U (2006) https://doi.org/10.1117/12.672553

KEYWORDS: Adaptive optics, Actuators, Microelectromechanical systems, Deformable mirrors, Wavefront sensors, Telescopes, Wavefronts, Stars, Optical testing, Space telescopes

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Proceedings Article | 28 June 2006 Paper

Adaptive optics control of wind blown turbulence via translation and prediction

Donald Wiberg, Luke Johnson, Donald Gavel

Proceedings Volume 6272, 62722X (2006) https://doi.org/10.1117/12.672420

KEYWORDS: Wavefronts, Adaptive optics, Filtering (signal processing), Turbulence, Feedback control, Monte Carlo methods, Device simulation, Adaptive control, Signal to noise ratio, Time metrology

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Proceedings Article | 27 June 2006 Paper

Adaptive optics designs for an infrared multi-object spectrograph on TMT

Donald Gavel, Brian Bauman, Richard Dekany, Matthew Britton, David Andersen

Proceedings Volume 6272, 62720R (2006) https://doi.org/10.1117/12.672514

KEYWORDS: Actuators, Adaptive optics, Microelectromechanical systems, Deformable mirrors, Wavefronts, Wavefront sensors, Mirrors, Stars, Spectrographs, Thirty Meter Telescope

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Proceedings Article | 27 June 2006 Paper

Pyramid wavefront sensing: theory and component technology development at LAO

Jess Johnson, Renate Kupke, Donald Gavel, Brian Bauman

Proceedings Volume 6272, 62724R (2006) https://doi.org/10.1117/12.672364

KEYWORDS: Sensors, Wavefront sensors, Modulation, Glasses, Spatial frequencies, Adaptive optics, Charge-coupled devices, Signal to noise ratio, Wavefronts, Phase shift keying

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Proceedings Article | 27 June 2006 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

First results from the UCSC Laboratory for Adaptive Optics multi-conjugate and multi-object adaptive optics testbed

S. Mark Ammons, Renate Kupke, Edward Laag, Donald Gavel, Daren Dillon, Marco Reinig, Brian Bauman, Claire Max, Jess Johnson

Proceedings Volume 6272, 627202 (2006) https://doi.org/10.1117/12.672452

KEYWORDS: Wavefronts, Adaptive optics, Wavefront sensors, Tomography, Laser guide stars, Stars, Deformable mirrors, Point spread functions, Telescopes, Sensors

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Proceedings Article | 27 June 2006 Paper

A conceptual design for the Thirty Meter Telescope adaptive optics systems

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

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 | 27 June 2006 Paper

IRMOS: The near-infrared multi-object spectrograph for the TMT

Stephen Eikenberry, David Andersen, Rafael Guzman, John Bally, Salvador Cuevas, Murray Fletcher, Rusty Gardhouse, Don Gavel, Anthony Gonzalez, Nicolas Gruel, Fred Hamann, Sam Hamner, Roger Julian, Jeff Julian, David Koo, Elizabeth Lada, Brian Leckie, J. Alberto Lopez, Roser Pello, Jorge Perez, William Rambold, Carlos Roman, Ata Sarajedini, Jonathan Tan, Kim Venn, Jean-Pierre Veran, John Ziegert

Proceedings Volume 6269, 62695W (2006) https://doi.org/10.1117/12.672266

KEYWORDS: Molybdenum, Mirrors, Spectrographs, Galactic astronomy, Relays, Telescopes, Astronomical imaging, Adaptive optics, Stars, Thirty Meter Telescope

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Proceedings Article | 23 January 2006 Paper

MEMS for the next generation of giant astronomical telescopes

Donald Gavel

Proceedings Volume 6113, 611307 (2006) https://doi.org/10.1117/12.659159

KEYWORDS: Adaptive optics, Microelectromechanical systems, Deformable mirrors, Telescopes, Wavefront sensors, Wavefronts, Actuators, Mirrors, Astronomical telescopes, Imaging systems

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Proceedings Article | 23 January 2006 Paper

Extreme adaptive optics testbed: performance and characterization of a 1024-MEMS deformable mirror

Julia Evans, Katie Morzinski, Scott Severson, Lisa Poyneer, Bruce Macintosh, Daren Dillon, Layra Reza, Donald Gavel, David Palmer, Scot Olivier, Paul Bierden

Proceedings Volume 6113, 61130I (2006) https://doi.org/10.1117/12.648977

KEYWORDS: Actuators, Microelectromechanical systems, Wavefronts, Adaptive optics, Deformable mirrors, Spatial frequencies, Electronics, Optical testing, Interferometers, Diffraction

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Proceedings Article | 8 October 2005 Paper

Adaptive optics for the Thirty Meter Telescope

Brent Ellerbroek, Matthew Britton, Richard Dekany, Don Gavel, Glen Herriot, Bruce Macintosh, Jeff Stoesz

Proceedings Volume 5903, 590304 (2005) https://doi.org/10.1117/12.619915

KEYWORDS: Adaptive optics, Mirrors, Laser guide stars, Deformable mirrors, Wavefront sensors, Microelectromechanical systems, Stars, Wavefronts, Imaging spectroscopy, Thirty Meter Telescope

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Proceedings Article | 15 September 2005 Paper

Extreme adaptive optics testbed: high contrast measurements with a MEMS deformable mirror

Julia Evans, Katie Morzinski, Layra Reza, Scott Severson, Lisa Poyneer, Bruce Macintosh, Daren Dillon, Gary Sommargren, David Palmer, Don Gavel, Scot Olivier

Proceedings Volume 5905, 59050Y (2005) https://doi.org/10.1117/12.619140

KEYWORDS: Actuators, Wavefronts, Microelectromechanical systems, Adaptive optics, Deformable mirrors, Diffraction, Optical testing, Spatial frequencies, Point spread functions, Imaging systems

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Proceedings Article | 25 August 2005 Paper

Fast hardware implementation of tomography for multi-guidestar adaptive optics

Donald Gavel, Marc Reinig, Carlos Cabrera

Proceedings Volume 5903, 59030F (2005) https://doi.org/10.1117/12.618430

KEYWORDS: Tomography, Adaptive optics, Wavefronts, Wavefront sensors, Telescopes, Field programmable gate arrays, Image processing, Deformable mirrors, Sensors, Actuators

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Proceedings Article | 25 August 2005 Paper

Optical design for the narrow field infrared adaptive optics system (NFIRAOS) petite on the thirty meter telescope

Brian Bauman, Donald Gavel, Richard Dekany, Brent Ellerbroek

Proceedings Volume 5903, 590303 (2005) https://doi.org/10.1117/12.618220

KEYWORDS: Adaptive optics, Relays, Mirrors, Microelectromechanical systems, Stars, Optical design, Infrared telescopes, Deformable mirrors, Wavefront sensors, Infrared radiation

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Proceedings Article | 25 October 2004 Paper

Laser guide star adaptive optics imaging polarimetry of Herbig Ae/Be stars

Marshall Perrin, James Graham, Paul Kalas, James Lloyd, Claire Max, Donald Gavel, Deanna Pennington, Elinor Gates

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551932

KEYWORDS: Stars, Adaptive optics, Polarization, Polarimetry, Wave plates, Laser guide stars, Telescopes, Speckle, Prisms, Point spread functions

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Proceedings Article | 25 October 2004 Paper

A geometric view of adaptive optics control: boiling atmosphere model

Donald Wiberg, Claire Max, Donald Gavel

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552349

KEYWORDS: Atmospheric modeling, Adaptive optics, Filtering (signal processing), Atmospheric optics, Wavefronts, Control systems, Adaptive control, Sensors, Plutonium, Control systems design

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Proceedings Article | 25 October 2004 Paper

Adaptive optics requirements definition for TMT

Richard Dekany, Matthew Britton, Don Gavel, Brent Ellerbroek, Glen Herriot, Claire Max, Jean-Pierre Veran

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552911

KEYWORDS: Adaptive optics, Wavefront sensors, Integrated circuit design, Complex systems, Algorithm development, Sodium, Cameras, Actuators, Observatories, Pulsed laser operation

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Proceedings Article | 25 October 2004 Paper

eXtreme Adaptive Optics Planet Imager: overview and status

Bruce Macintosh, Brian Bauman, Julia Wilhelmsen Evans, James Graham, Christopher Lockwood, Lisa Poyneer, Daren Dillon, Don Gavel, Joseph Green, James Lloyd, Russell Makidon, Scot Olivier, Dave Palmer, Marshall Perrin, Scott Severson, Andrew Sheinis, Anand Sivaramakrishnan, Gary Sommargren, Remi Soummer, Mitchell Troy, J. Kent Wallace, Edward Wishnow

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552188

KEYWORDS: Adaptive optics, Point spread functions, Wavefronts, Planets, Coronagraphy, Wavefront sensors, Telescopes, Stars, Imaging systems, Calibration

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Proceedings Article | 25 October 2004 Paper

Studying binary asteroids with NGS and LGS AO systems

Franck Marchis, Jerome Berthier, Pascal Descamps, Daniel Hestroffer, Frederic Vachier, Conor Laver, Imke de Pater, Don Gavel

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.550624

KEYWORDS: Adaptive optics, Asteroids, Binary data, Space operations, Imaging systems, Radar, Radar imaging, Space telescopes, Telescopes, Neptune

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Proceedings Article | 25 October 2004 Paper

Tomography for multiconjugate adaptive optics systems using laser guide stars

Donald Gavel

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.552402

KEYWORDS: Wavefronts, Tomography, Laser guide stars, Adaptive optics, Deformable mirrors, Turbulence, Fourier transforms, Spatial frequencies, Sensors, Spherical lenses

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Proceedings Article | 12 October 2004 Paper

Adaptive compensation of atmospheric turbulence utilizing an interferometric wavefront sensor and a high-resolution MEMS-based spatial light modulator

Kevin Baker, Eddy Stappaerts, Don Gavel, Jack Tucker, Dennis Silva, Scott Wilks, Scot Olivier, Jeff Olsen

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.563669

KEYWORDS: Adaptive optics, Laser beam diagnostics, Turbulence, Atmospheric propagation, Point spread functions, Phase conjugation, Cameras, Beam propagation method, Spatial light modulators, Imaging systems

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Proceedings Article | 12 October 2004 Paper

Design and progress toward a multiconjugate adaptive optics system for distributed aberration correction

Kevin Baker, Scot Olivier, Jack Tucker, Dennis Silva, Don Gavel, R. Lim, Edward Gratrix

Proceedings Volume 5553, (2004) https://doi.org/10.1117/12.559786

KEYWORDS: Stars, Glasses, Adaptive optics, Liquid crystals, Turbulence, Epoxies, Optics manufacturing, Etching, Tomography, Phase measurement

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Proceedings Article | 24 December 2003 Paper

Characterization and operation of a liquid crystal adaptive optics phoropter

Abdul Ahad Awwal, Brian Bauman, Donald Gavel, Scot Olivier, Steve Jones, Dennis Silva, Joseph Hardy, Thomas Barnes, John Werner

Proceedings Volume 5169, (2003) https://doi.org/10.1117/12.510393

KEYWORDS: Wavefronts, Spatial light modulators, Adaptive optics, Eye, Liquid crystals, Sensors, Wavefront sensors, Visualization, Retina, Monochromatic aberrations

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Proceedings Article | 19 November 2003 Paper

Extreme adaptive optics planet imager: XAOPI

Bruce Macintosh, James Graham, Lisa Poyneer, Gary Sommargren, Julia Wilhelmsen, Don Gavel, Steve Jones, Paul Kalas, James Lloyd, Russ Makidon, Scot Olivier, Dave Palmer, Jennifer Patience, Marshall Perrin, Scott Severson, Andrew Sheinis, Anand Sivaramakrishnan, Mitch Troy, J. Wallace

Proceedings Volume 5170, (2003) https://doi.org/10.1117/12.506836

KEYWORDS: Wavefronts, Adaptive optics, Wavefront sensors, Planets, Imaging systems, Coronagraphy, Point spread functions, Stars, Telescopes, Mirrors

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Proceedings Article | 18 June 2003 Paper

Adaptive optics at Lawrence Livermore National Labratory

Donald Gavel

Proceedings Volume 5001, (2003) https://doi.org/10.1117/12.500364

KEYWORDS: Adaptive optics, Wavefronts, Telescopes, Atmospheric optics, Wavefront sensors, Astronomy, Stars, Astronomical telescopes, Image resolution, Sensors

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Proceedings Article | 18 June 2003 Paper

Astronomy applications of adaptive optics at Lawrence Livermore National Laboratory

Brian Bauman, Donald Gavel

Proceedings Volume 5001, (2003) https://doi.org/10.1117/12.500365

KEYWORDS: Adaptive optics, Stars, Telescopes, Planets, Observatories, Galactic astronomy, Astronomy, Laser guide stars, Dye lasers, Large telescopes

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Proceedings Article | 3 March 2003 Paper

Four-quadrant phase mask: analytical calculation and pupil geometry

James Lloyd, Donald Gavel, James Graham, Philip Hodge, Anand Sivaramakrishnan, G. Voit

Proceedings Volume 4860, (2003) https://doi.org/10.1117/12.457880

KEYWORDS: Coronagraphy, Convolution, Error analysis, Fourier transforms, Space telescopes, Telescopes, Diffraction, Image filtering, Exoplanetary science, Testing and analysis

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Proceedings Article | 7 February 2003 Paper

Recent science and engineering results with the laser guide star adaptive optics system at Lick Observatory

Donald Gavel, Elinor Gates, Claire Max, Scot Olivier, Brian Bauman, Deanna Pennington, Bruce Macintosh, Jennifer Patience, Curtis Brown, Pamela Danforth, Randall Hurd, Scott Severson, James Lloyd

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459680

KEYWORDS: Adaptive optics, Laser guide stars, Stars, Cameras, Observatories, Telescopes, Infrared cameras, K band, Diagnostics, Imaging systems

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Proceedings Article | 7 February 2003 Paper

Suppressing anomalous localized waffle behavior in least squares wavefront reconstructors

Donald Gavel

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459686

KEYWORDS: Wavefronts, Sensors, Actuators, Adaptive optics, Matrices, Space operations, Spatial frequencies, Objectives, Space sensors, Signal to noise ratio

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Proceedings Article | 7 February 2003 Paper

Toward Strehl-optimizing adaptive optics controllers

Donald Gavel, Donald Wiberg

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459684

KEYWORDS: Wavefronts, Adaptive optics, Wavefront sensors, Turbulence, Error analysis, Feedback control, Actuators, Device simulation, Deformable mirrors, Phase measurement

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Proceedings Article | 7 February 2003 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 | 7 February 2003 Paper

Anisoplanatism within the isoplanatic patch

Julian Christou, E. Steinbring, Sandra Faber, Donald Gavel, Jennifer Patience, Elinor Gates

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.467863

KEYWORDS: Point spread functions, Stars, Adaptive optics, Binary data, Spatial frequencies, Motion measurement, Observatories, Cameras, K band, Deconvolution

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Proceedings Article | 7 February 2003 Paper

Initial concepts for CELT adaptive optics

Richard Dekany, Brian Bauman, Donald Gavel, Mitchell Troy, Bruce Macintosh, Matthew Britton

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459798

KEYWORDS: Adaptive optics, Mirrors, Telescopes, Wavefronts, Stars, Deformable mirrors, Relays, Error analysis, Actuators, Space telescopes

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