Dr. Derek A. Kopon Profile

Dr. Derek A. Kopon

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 28 September 2023 Presentation + Paper

Sensitivity comparison of a NURBS freeform telescope

Derek Kopon, Jenna Montague, Brian Primeau, Plamen Krastev, Gregory Cappiello, James Johnson

Proceedings Volume 12669, 126690C (2023) https://doi.org/10.1117/12.2677577

KEYWORDS: Design and modelling, Optical surfaces, Aspheric lenses, Telescopes, Diffraction limit, Modulation transfer functions, Mirror surfaces, Mirrors, Zernike polynomials, Zemax

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Proceedings Article | 29 August 2022 Poster + Paper

Aligning the GMT wide field phasing testbed optical system using a laser tracker and an interferometer

Brian A. McLeod, Peyton Benac, Grant Meiners, Daniel Catropa, Jan Kansky, William Podgorski, Derek Kopon

Proceedings Volume 12188, 1218840 (2022) https://doi.org/10.1117/12.2630610

KEYWORDS: Astronomical telescopes, Interferometers, Mirrors, Optical benches, Zemax, Relays, Optical components, Optics manufacturing, Wavefronts

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Proceedings Article | 29 August 2022 Presentation + Paper

The wide field phasing testbed for the Giant Magellan Telescope

Brian McLeod, Antonin Bouchez, Daniel Catropa, Peyton Benac, Daniel Durusky, Jan Kansky, Derek Kopon, Grant Meiners, Stuart McMuldroch, William Podgorski, Richard Demers, Fernando Quiros-Pacheco, William Schoenell, Patricio Schurter, Breann Sitarski, Guillermo Gonzalez, Bijan Nemati, Diogo Slepetys

Proceedings Volume 12182, 1218208 (2022) https://doi.org/10.1117/12.2630588

KEYWORDS: Mirrors, Wavefronts, Wavefront sensors, Telescopes, Relays, Prototyping, Sensors, Deformable mirrors, Actuators, Prisms

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Proceedings Article | 13 December 2020 Poster + Paper

Mechanism prototyping for the GMT acquisition guiding and wavefront sensing system

Daniel Catropa, Brian McLeod, Joseph D'Arco, Daniel Durusky, Jan Kansky, Derek Kopon, Kenneth McCracken, Stuart McMuldroch, William Podgorski, Antonin Bouchez

Proceedings Volume 11445, 114453V (2020) https://doi.org/10.1117/12.2562415

KEYWORDS: Prototyping, Wavefront sensors, Sensing systems, Stars, Telescopes, Standards development, Electronics, HVAC controls, Control systems, Cooling systems

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Proceedings Article | 10 July 2018 Presentation + Paper

Preliminary on-sky results of the next generation GMT phasing sensor prototype

Derek Kopon, Brian McLeod, Antonin Bouchez, Daniel Catropa, Marcos van Dam, Danielle Frostig, Jan Kansky, Ken McCracken, William Podgorski, Stuart McMuldroch, Joseph D'Arco, Laird Close, Jared Males, Katie Morzinski

Proceedings Volume 10703, 107030X (2018) https://doi.org/10.1117/12.2314381

KEYWORDS: Prototyping, Sensors, Prisms, Phase shifts, Telescopes, Adaptive optics, Wavefront sensors, Stars, Image segmentation, Monochromatic aberrations, Astronomical adaptive optics

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Proceedings Article | 6 July 2018 Presentation + Paper

The acquisition, guiding, and wavefront sensing system for the Giant Magellan Telescope

Brian McLeod, Daniel Catropa, Daniel Durusky, Jan Kansky, Derek Kopon, Kenneth McCracken, Stuart McMuldroch, William Podgorski, Antonin Bouchez

Proceedings Volume 10700, 107001T (2018) https://doi.org/10.1117/12.2313589

KEYWORDS: Sensors, Telescopes, Wavefront sensors, Mirrors, Control systems, Cameras, Image segmentation, Prisms, Electronics, Stars

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Proceedings Article | 6 July 2018 Paper

Mechanisms in the GMT acquisition guiding and wavefront sensing system

Daniel Catropa, Brian McLeod, Joseph D'Arco, Daniel Durusky, Jan Kansky, Derek Kopon, Kenneth McCracken, Stuart McMuldroch, William Podgorski, Antonin Bouchez

Proceedings Volume 10700, 1070066 (2018) https://doi.org/10.1117/12.2313981

KEYWORDS: Mirrors, Computer programming, Prisms, Servomechanisms, Telescopes, Calibration, Sensors, Wavefront sensors, Beam steering, Prototyping

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Proceedings Article | 2 September 2016 Paper

On-sky demonstration of the GMT dispersed fringe phasing sensor prototype on the Magellan Telescope

Derek Kopon, Brian McLeod, Marcos van Dam, Antonin Bouchez, Ken McCracken, Daniel Catropa, William Podgorski, Stuart McMuldroch, Alan Conder, Laird Close, Jared Males, Katie Morzinski, Timothy Norton

Proceedings Volume 9909, 990946 (2016) https://doi.org/10.1117/12.2232942

KEYWORDS: Sensors, Adaptive optics, Prototyping, Telescopes, Image segmentation, Mirrors, Diffraction, Stars, Phase shifts, Phase measurement

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Proceedings Article | 4 August 2016 Paper

iLocater: a diffraction-limited Doppler spectrometer for the Large Binocular Telescope

Justin Crepp, Jonathan Crass, David King, Andrew Bechter, Eric Bechter, Ryan Ketterer, Robert Reynolds, Philip Hinz, Derek Kopon, David Cavalieri, Louis Fantano, Corina Koca, Eleanya Onuma, Karl Stapelfeldt, Joseph Thomes, Sheila Wall, Steven Macenka, James McGuire, Ronald Korniski, Leonard Zugby, Joshua Eisner, B Gaudi, Fred Hearty, Kaitlin Kratter, Marc Kuchner, Giusi Micela, Matthew Nelson, Isabella Pagano, Andreas Quirrenbach, Christian Schwab, Michael Skrutskie, Alessandro Sozzetti, Charles Woodward, Bo Zhao

Proceedings Volume 9908, 990819 (2016) https://doi.org/10.1117/12.2233135

KEYWORDS: Adaptive optics, Doppler effect, Spectroscopy, Telescopes, Spectrographs, Adaptive optics, Space telescopes, Spectral resolution, Cameras, Single mode fibers, Planets

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Proceedings Article | 7 August 2014 Paper

Into the blue: AO science with MagAO in the visible

Laird Close, Jared Males, Katherine Follette, Phil Hinz, Katie Morzinski, Ya-Lin Wu, Derek Kopon, Armando Riccardi, Simone Esposito, Alfio Puglisi, Enrico Pinna, Marco Xompero, Runa Briguglio, Fernando Quiros-Pacheco

Proceedings Volume 9148, 91481M (2014) https://doi.org/10.1117/12.2057297

KEYWORDS: Adaptive optics, Cameras, Stars, Telescopes, Astronomy, Actuators, Near infrared, Point spread functions, Visible radiation, Image resolution

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Proceedings Article | 7 August 2014 Paper

Pathfinder first light: alignment, calibration, and commissioning of the LINC-NIRVANA ground-layer adaptive optics subsystem

Derek Kopon, Al Conrad, Carmelo Arcidiacono, Tom Herbst, Valentina Viotto, Jacopo Farinato, Maria Bergomi, Roberto Ragazzoni, Luca Marafatto, Harald Baumeister, Thomas Bertram, Jürgen Berwein, Florian Briegel, Ralph Hofferbert, Frank Kittmann, Martin Kürster, Lars Mohr, Kalyan Radhakrishnan

Proceedings Volume 9148, 914828 (2014) https://doi.org/10.1117/12.2056737

KEYWORDS: Stars, Adaptive optics, Mirrors, Telescopes, Optical alignment, Calibration, Cameras, Wavefront sensors, Infrared cameras, Space telescopes

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Proceedings Article | 6 August 2014 Paper

Acquiring multiple stars with the LINC-NIRVANA Pathfinder

Albert Conrad, Carmelo Arcidiacono, Harald Baumeister, Maria Bergomi, Thomas Bertram, Jürgen Berwein, Florian Briegel, Jacopo Farinato, Tom Herbst, Ralph Hofferbert, Frank Kittmann, Martin Kürster, Derek Kopon, Luca Marafatto, Mark Norris, Roberto Ragazzoni, Valentina Viotto

Proceedings Volume 9149, 91491O (2014) https://doi.org/10.1117/12.2055648

KEYWORDS: Stars, Cameras, Adaptive optics, Telescopes, Sensors, Visualization, Target acquisition, Prototyping, Human-machine interfaces, Wavefront sensors

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Proceedings Article | 21 July 2014 Paper

MagAO: Status and on-sky performance of the Magellan adaptive optics system

Katie Morzinski, Laird Close, Jared Males, Derek Kopon, Phil Hinz, Simone Esposito, Armando Riccardi, Alfio Puglisi, Enrico Pinna, Runa Briguglio, Marco Xompero, Fernando Quirós-Pacheco, Vanessa Bailey, Katherine Follette, T. Rodigas, Ya-Lin Wu, Carmelo Arcidiacono, Javier Argomedo, Lorenzo Busoni, Tyson Hare, Alan Uomoto, Alycia Weinberger

Proceedings Volume 9148, 914804 (2014) https://doi.org/10.1117/12.2057048

KEYWORDS: Adaptive optics, Cameras, Mirrors, Stars, Telescopes, Charge-coupled devices, Calibration, Infrared cameras, Modulation, Control systems

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Proceedings Article | 21 July 2014 Paper

Direct imaging of exoplanets in the habitable zone with adaptive optics

Jared Males, Laird Close, Olivier Guyon, Katie Morzinski, Alfio Puglisi, Philip Hinz, Katherine Follette, John Monnier, Volker Tolls, Timothy Rodigas, Alycia Weinberger, Alan Boss, Derek Kopon, Ya-lin Wu, Simone Esposito, Armando Riccardi, Marco Xompero, Runa Briguglio, Enrico Pinna

Proceedings Volume 9148, 914820 (2014) https://doi.org/10.1117/12.2057135

KEYWORDS: Planets, Stars, Adaptive optics, Imaging systems, Exoplanets, Cameras, Point spread functions, Liquids, Telescopes, Space telescopes

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Proceedings Article | 21 July 2014 Paper

First light of the LINC-NIRVANA Pathfinder experiment

M. Bergomi, V. Viotto, C. Arcidiacono, L. Marafatto, J. Farinato, H. Baumeister, T. Bertram, J. Berwein, F. Briegel, A. Conrad, F. Kittman, D. Kopon, R. Hofferbert, D. Magrin, K. Radhakrishnan Santhakumari, A. Puglisi, M. Xompero, R. Briguglio, F. Quiros-Pacheco, T. Herbst, R. Ragazzoni

Proceedings Volume 9148, 91482Y (2014) https://doi.org/10.1117/12.2055533

KEYWORDS: Stars, Calibration, Cameras, Telescopes, Adaptive optics, Mirrors, Wavefront sensors, Matrices, Charge-coupled devices, Turbulence

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Proceedings Article | 13 September 2012 Paper

Laboratory demonstration of real time frame selection with Magellan AO

Jared Males, Laird Close, Derek Kopon, Fernando Quiros-Pacheco, Armando Riccardi, Marco Xompero, Alfio Puglisi, Victor Gasho, Katie Morzinski, Katherine Follette

Proceedings Volume 8447, 844742 (2012) https://doi.org/10.1117/12.926698

KEYWORDS: Adaptive optics, Camera shutters, Stars, Telescopes, Charge-coupled devices, Turbulence, Calibration, Cameras, Actuators, Optical filters

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Proceedings Article | 13 September 2012 Paper

First closed-loop visible AO test results for the advanced adaptive secondary AO system for the Magellan Telescope: MagAO's performance and status

Laird Close, Jared Males, Derek Kopon, Victor Gasho, Katherine Follette, Phil Hinz, Katie Morzinski, Alan Uomoto, Tyson Hare, Armando Riccardi, Simone Esposito, Alfio Puglisi, Enrico Pinna, Lorenzo Busoni, Carmelo Arcidiacono, Marco Xompero, Runa Briguglio, Fernando Quiros-Pacheco, Javier Argomedo

Proceedings Volume 8447, 84470X (2012) https://doi.org/10.1117/12.926545

KEYWORDS: Adaptive optics, Cameras, Telescopes, Stars, Point spread functions, Coronagraphy, Camera shutters, Actuators, Sensors, Infrared cameras

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The heart of the 6.5 Magellan AO system (MagAO) is a 585 actuator adaptive secondary mirror (ASM) with <1 msec response times (0.7 ms typically). This adaptive secondary will allow low emissivity and high-contrast AO science. We fabricated a high order (561 mode) pyramid wavefront sensor (similar to that now successfully used at the Large Binocular Telescope). The relatively high actuator count (and small projected ~23 cm pitch) allows moderate Strehls to be obtained by MagAO in the “visible” (0.63-1.05 μm). To take advantage of this we have fabricated an AO CCD science camera called "VisAO". Complete “end-to-end” closed-loop lab tests of MagAO achieve a solid, broad-band, 37% Strehl (122 nm rms) at 0.76 μm (i’) with the VisAO camera in 0.8” simulated seeing (13 cm ro at V) with fast 33 mph winds and a 40 m Lo locked on R=8 mag artificial star. These relatively high visible wavelength Strehls are enabled by our powerful combination of a next generation ASM and a Pyramid WFS with 400 controlled modes and 1000 Hz sample speeds (similar to that used successfully on-sky at the LBT). Currently only the VisAO science camera is used for lab testing of MagAO, but this high level of measured performance (122 nm rms) promises even higher Strehls with our IR science cameras. On bright (R=8 mag) stars we should achieve very high Strehls (>70% at H) in the IR with the existing MagAO Clio2 (λ=1-5.3 μm) science camera/coronagraph or even higher (~98% Strehl) the Mid-IR (8-26 microns) with the existing BLINC/MIRAC4 science camera in the future. To eliminate non-common path vibrations, dispersions, and optical errors the VisAO science camera is fed by a common path advanced triplet ADC and is piggy-backed on the Pyramid WFS optical board itself. Also a high-speed shutter can be used to block periods of poor correction. The entire system passed CDR in June 2009, and we finished the closed-loop system level testing phase in December 2011. Final system acceptance (“pre-ship” review) was passed in February 2012. In May 2012 the entire AO system is was successfully shipped to Chile and fully tested/aligned. It is now in storage in the Magellan telescope clean room in anticipation of “First Light” scheduled for December 2012. An overview of the design, attributes, performance, and schedule for the Magellan AO system and its two science cameras are briefly presented here.

Proceedings Article | 13 September 2012 Paper

Status update and closed-loop performance of the Magellan adaptive optics VisAO camera

Derek Kopon, Laird Close, Jared Males, Victor Gasho, Katie Morzinski, Katherine Follette

Proceedings Volume 8447, 84473D (2012) https://doi.org/10.1117/12.926446

KEYWORDS: Adaptive optics, Cameras, Beam splitters, Telescopes, Stars, Mirrors, Prisms, Actuators, Wavefront sensors, Optical filters

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Proceedings Article | 15 July 2010 Paper

The first VisAO-fed integral field spectrograph: VisAO IFS

Katherine Follette, Laird Close, Derek Kopon, Jared Males, Victor Gasho, Kevin Brutlag, Alan Uomoto

Proceedings Volume 7735, 77351P (2010) https://doi.org/10.1117/12.857516

KEYWORDS: Iterated function systems, Spectrographs, Adaptive optics, Stars, Spectral resolution, Spatial resolution, Atmospheric modeling, Camera shutters, Visible radiation, Atmospheric optics

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Proceedings Article | 15 July 2010 Paper

Frame selection techniques for the Magellan adaptive optics VisAO camera

Jared Males, Laird Close, Derek Kopon, Victor Gasho, Katherine Follette

Proceedings Volume 7736, 773660 (2010) https://doi.org/10.1117/12.858055

KEYWORDS: Adaptive optics, Camera shutters, Stars, Cameras, Telescopes, Sensors, Electron multiplying charge coupled devices, Imaging systems, Speckle, Point spread functions

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Proceedings Article | 15 July 2010 Paper

The Magellan Adaptive Secondary VisAO Camera: diffraction-limited broadband visible imaging and 20mas fiber array IFU

Derek Kopon, Laird Close, Jared Males, Victor Gasho, Katherine Follette

Proceedings Volume 7736, 77362V (2010) https://doi.org/10.1117/12.858062

KEYWORDS: Cameras, Iterated function systems, Adaptive optics, Beam splitters, Diffraction, Optical filters, Charge-coupled devices, Lens design, Wavefront sensors, Prisms

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Proceedings Article | 15 July 2010 Paper

The Magellan Telescope Adaptive Secondary AO System: a visible and mid-IR AO facility

Laird Close, Victor Gasho, Derek Kopon, Jared Males, Katherine Follette, Kevin Brutlag, Alan Uomoto, Tyson Hare

Proceedings Volume 7736, 773605 (2010) https://doi.org/10.1117/12.857924

KEYWORDS: Adaptive optics, Mid-IR, Telescopes, Cameras, Actuators, Stars, Mirrors, Charge-coupled devices, Observatories, Thermography

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Proceedings Article | 18 September 2009 Paper

Enabling technologies for visible adaptive optics: the Magellan adaptive secondary VisAO camera

Derek Kopon, Jared Males, Laird Close, Victor Gasho

Proceedings Volume 7439, 74390Y (2009) https://doi.org/10.1117/12.834688

KEYWORDS: Adaptive optics, Cameras, Camera shutters, Wavefront sensors, Stars, Telescopes, Mirrors, Beam splitters, Diffraction, Coronagraphy

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Proceedings Article | 8 August 2008 Paper

The Magellan Telescope adaptive secondary AO system

Laird Close, Victor Gasho, Derek Kopon, Phil Hinz, William Hoffmann, Alan Uomoto, Tyson Hare

Proceedings Volume 7015, 70150Y (2008) https://doi.org/10.1117/12.789527

KEYWORDS: Adaptive optics, Mid-IR, Telescopes, Actuators, Cameras, Stars, Mirrors, Interfaces, Charge-coupled devices, Electronics

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Proceedings Article | 15 July 2008 Paper

An advanced atmospheric dispersion corrector: the Magellan visible AO camera

Derek Kopon, Laird Close, Victor Gasho

Proceedings Volume 7015, 70156M (2008) https://doi.org/10.1117/12.790215

KEYWORDS: Adaptive optics, Cameras, Diffraction, Lens design, Mirrors, Prisms, Atmospheric sciences, Glasses, Beam splitters, Chromatic aberrations

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Showing 5 of 25 publications

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