Dr. Malcolm J. Northcott Profile

Dr. Malcolm J. Northcott

Sensor Systems Engineer at Apple

SPIE Involvement:

Author

Publications (24)

SPIE Journal Paper | 25 May 2012

Hybrid optical radio frequency airborne communications

Zachary Bagley, David Hughes, Juan Juarez, David Young, Paul Kolodzy, Todd Martin, Malcolm Northcott, H. Alan Pike, Ned Plasson, Brian Stadler, Larry Stotts

OE, Vol. 51, Issue 5, 055006, (May 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.5.055006

KEYWORDS: Adaptive optics, Free space optics, RF communications, Radio optics, Optical communications, Turbulence, Receivers, Hybrid optics, Telecommunications, Atmospheric modeling

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Proceedings Article | 19 August 2008 Paper

Paper

Optical RF Communications Adjunct

Larry Stotts, Brian Stadler, Buzz Graves, Malcolm Northcott, Jeff Douglass, David Young, Joseph Sluz, Juan Juarez, Paul Kolodzy, H. Alan Pike, Gary Lee

Proceedings Volume 7091, 709102 (2008) https://doi.org/10.1117/12.801882

KEYWORDS: Adaptive optics, Free space optics, Receivers, Transmitters, Network architectures, RF communications, Forward error correction, Turbulence, Telecommunications, Sensors

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Proceedings Article | 2 May 2007 Paper

Paper

Demonstration of high-data-rate wavelength division multiplexed transmission over a 150-km free space optical link

David Young, Joseph Sluz, Juan Juarez, Marc Airola, Raymond Sova, Harry Hurt, Malcolm Northcott, John Phillips, Andy McClaren, Don Driver, David Abelson, James Foshee

Proceedings Volume 6578, 65780R (2007) https://doi.org/10.1117/12.722151

KEYWORDS: Free space optics, Receivers, Eye, Wavelength division multiplexing, Multiplexing, Clocks, Optical amplifiers, Error analysis, Phase modulation, Visibility

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Proceedings Article | 1 May 2007 Paper

Paper

Long distance laser communications demonstration

Malcolm Northcott, A. McClaren, J. Graves, John Phillips, Don Driver, David Abelson, David Young, Joseph Sluz, Juan Juarez, Marc Airola, Raymond Sova, Harry Hurt, James Foshee

Proceedings Volume 6578, 65780S (2007) https://doi.org/10.1117/12.722320

KEYWORDS: Scintillation, Adaptive optics, Single mode fibers, Laser communications, Telescopes, Receivers, Optical amplifiers, Applied physics, Dense wavelength division multiplexing, Scattering

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Proceedings Article | 1 September 2006 Paper

Paper

80 Gb/s free-space optical communication demonstration between an aerostat and a ground terminal

Raymond Sova, Joseph Sluz, David Young, Juan Juarez, Anurag Dwivedi, Nickolas Demidovich, J. Graves, Malcolm Northcott, Jeff Douglass, John Phillips, Don Driver, Andy McClarin, David Abelson

Proceedings Volume 6304, 630414 (2006) https://doi.org/10.1117/12.703216

KEYWORDS: Free space optics, Wavelength division multiplexing, Receivers, Data communications, Single mode fibers, Channel projecting optics, Transmitters, Eye, Video, Free space optical communications

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Proceedings Article | 7 July 2000 Paper

Paper

Curvature-based laser guide star adaptive optics system for Gemini South

Mark Chun, Celine D'Orgeville, Brent Ellerbroek, J. Elon Graves, Malcolm Northcott, Francois Rigaut

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390399

KEYWORDS: Adaptive optics, Telescopes, Laser guide stars, Stars, Sensors, Sodium, Gemini Observatory, Wavefronts, Device simulation, Wavefront sensors

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Proceedings Article | 7 July 2000 Paper

Paper

Adaptive secondary for the 2.1-m telescope at SPM Observatory

Arturo Iriarte Valverde, Salvador Cuevas, J. Elon Graves, Malcolm Northcott

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390286

KEYWORDS: Adaptive optics, Actuators, Mirrors, Telescopes, Wavefronts, Deformable mirrors, Ferroelectric materials, Observatories, Device simulation, Scanning probe microscopy

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Proceedings Article | 7 July 2000 Paper

Paper

Curvature-based adaptive optics for the NASA IRTF

Daniel O'Connor, J. Elon Graves, Malcolm Northcott, Douglas Toomey, Robert Joseph, J. Shelton

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390295

KEYWORDS: Adaptive optics, Relays, Wavefront sensors, Mirrors, Stars, Telescopes, Image segmentation, Infrared telescopes, Astronomy, Infrared radiation

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Proceedings Article | 7 July 2000 Paper

Paper

Design and performance of an 85-actuator curvature system

Malcolm Northcott, J. Elon Graves, Francois Roddier, Francois Rigaut

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390287

KEYWORDS: Actuators, Telescopes, Adaptive optics, Gemini Observatory, Sensors, Computing systems, Mirrors, Control systems, Lens design, Optical instrument design

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Proceedings Article | 7 July 2000 Paper

Paper

First light for Hokupa'a 36 on Gemini North

J. Elon Graves, Malcolm Northcott, Francois Roddier, Claude Roddier, Dan Potter, Daniel O'Connor, Francois Rigaut, Mark Chun

Proceedings Volume 4007, (2000) https://doi.org/10.1117/12.390369

KEYWORDS: Telescopes, Gemini Observatory, Adaptive optics, Actuators, Deformable mirrors, Mirrors, Diffraction, Astronomy, Astronomical telescopes, Optical design

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Proceedings Article | 29 June 2000 Paper

Paper

NPT: a large-aperture telescope for high dynamic range astronomy

Robert Joseph, Jeff Kuhn, Alan Tokunaga, Roy Coulter, Christ Ftaclas, J. Elon Graves, Charles Hull, D. Jewitt, Donald Mickey, Gilberto Moretto, Doug Neill, Malcolm Northcott, Claude Roddier, Francois Roddier, Walter Siegmund, Tobias Owen

Proceedings Volume 4005, (2000) https://doi.org/10.1117/12.390156

KEYWORDS: Telescopes, Solar system, Stars, Astronomy, Adaptive optics, Astronomical telescopes, Exoplanets, Mirrors, High dynamic range imaging, Coronagraphy

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Proceedings Article | 11 September 1998 Paper

Paper

First light for Hokupa'a: 36-element curvature AO system at UH

J. Elon Graves, Malcolm Northcott, Francois Roddier, Claude Roddier, Laird Close

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321698

KEYWORDS: Adaptive optics, Mirrors, Telescopes, Actuators, Cameras, Stars, Computer simulations, Optical filters, Ferroelectric materials, Electrodes

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Proceedings Article | 11 September 1998 Paper

Paper

Scientific results from the University of Hawaii: adaptive problems well suited to AO techniques

Laird Close, Francois Roddier, Claude Roddier, J. Elon Graves, Malcolm Northcott, Dan Potter

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321738

KEYWORDS: Point spread functions, Stars, Adaptive optics, Astronomy, Galactic astronomy, Binary data, Imaging systems, Solar system, Calibration, Deconvolution

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Proceedings Article | 11 September 1998 Paper

Paper

University of Mexico adaptive optics program

Salvador Cuevas, Pablo Sotelo, Fernando Garfias, Arturo Iriarte Valverde, Luis Martinez, Valeri Orlov, Valeri Voitsekhovich, Oscar Chapa, Silvio Tinoco, Jean Vernin, Remy Avila, Franck Marchis, J. Elon Graves, Malcolm Northcott, Francois Roddier, Claude Roddier

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321690

KEYWORDS: Adaptive optics, Telescopes, Observatories, Turbulence, Actuators, Deformable mirrors, Astronomy, Image segmentation, Mirrors, Scanning probe microscopy

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Proceedings Article | 1 June 1994 Paper

Paper

UH/IfA fast tip-tilt secondary

Andrew Pickles, Tony Young, Wesley Nakamura, Lennox Cowie, J. Elon Graves, Kevin Jim, Timothy Keller, Gerard Luppino, Malcolm Northcott, Claude Roddier, Alan Stockton, Richard Wainscoat, Hubert Yamada, Charles Cavedoni

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176216

KEYWORDS: Telescopes, Mirrors, Monochromatic aberrations, Stars, Adaptive optics, Sensors, Charge-coupled devices, Image quality, Infrared radiation, Control systems

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Proceedings Article | 1 June 1994 Paper

Paper

Testing optical telescopes from defocused stellar images

Claude Roddier, J. Elon Graves, Malcolm Northcott, Francois Roddier

Proceedings Volume 2199, (1994) https://doi.org/10.1117/12.176178

KEYWORDS: Telescopes, Monochromatic aberrations, Mirrors, Optical telescopes, Wavefronts, Infrared telescopes, Optical testing, Space telescopes, Charge-coupled devices, Spatial resolution

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Proceedings Article | 31 May 1994 Paper

Paper

Adaptive optics at the University of Hawaii I: current performance at the telescope

Francois Roddier, Jim Anuskiewicz, J. Elon Graves, Malcolm Northcott, Claude Roddier

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176013

KEYWORDS: Telescopes, Stars, Adaptive optics, Sensors, Astronomy, Mirrors, Photon counting, Cameras, Monochromatic aberrations, Optical benches

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Proceedings Article | 31 May 1994 Paper

Paper

Adaptive optics at the University of Hawaii IV: a photon-counting curvature wavefront sensor

J. Elon Graves, Francois Roddier, Malcolm Northcott, Jim Anuskiewicz, Guy Monnet

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176085

KEYWORDS: Mirrors, Wavefronts, Telescopes, Adaptive optics, Astronomy, Wavefront sensors, Sensors, Avalanche photodetectors, Photon counting, Deformable mirrors

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Proceedings Article | 31 May 1994 Paper

Paper

Adaptive optics at the University of Hawaii II: control system with real-time diagnostics

Jim Anuskiewicz, Malcolm Northcott, J. Elon Graves

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176122

KEYWORDS: Adaptive optics, Sensors, Control systems, Diagnostics, Human-machine interfaces, Feedback loops, Astronomy, Mirrors, Process control, Modulation

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Proceedings Article | 31 May 1994 Paper

Paper

Adaptive optics at the University of Hawaii III: the adaptive optical PSF

Malcolm Northcott, Claude Roddier

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176023

KEYWORDS: Adaptive optics, Point spread functions, Wavefronts, Telescopes, Deconvolution, Astronomy, Diffraction, Calibration, Monte Carlo methods, Spectroscopy

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Proceedings Article | 31 May 1994 Paper

Paper

Canada-France-Hawaii Telescope adaptive optics bonnette II: simulations and control

Francois Rigaut, Robin Arsenault, John Kerr, Derrick Salmon, Malcolm Northcott, Yvan Dutil, Corinne Boyer

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176039

KEYWORDS: Mirrors, Sensors, Adaptive optics, Electrodes, Astronomy, Device simulation, Telescopes, Turbulence, Optical simulations, Wavefronts

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Proceedings Article | 1 October 1993 Paper

Paper

Curvature-based adaptive optics instrument for the UH 2.2-m telescope

Malcolm Northcott, Kevin Jim, J. Elon Graves, Gerard Luppino, Timothy Keller, Andrew Pickles, Alan Tokunaga

Proceedings Volume 2019, (1993) https://doi.org/10.1117/12.157829

KEYWORDS: Adaptive optics, Charge-coupled devices, Telescopes, Space telescopes, Wavefront sensors, Sensors, CCD image sensors, Mirrors, Signal to noise ratio, Infrared sensors

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Proceedings Article | 1 December 1991 Paper

Paper

University of Hawaii adaptive optics system: II. Computer simulation

Malcolm Northcott

Proceedings Volume 1542, (1991) https://doi.org/10.1117/12.48813

KEYWORDS: Adaptive optics, Mirrors, Sensors, Computer simulations, Atmospheric optics, Atmospheric modeling, Actuators, Atmospheric propagation, Active optics, Device simulation

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Proceedings Article | 1 December 1991 Paper

Paper

University of Hawaii adaptive optics system: I. General approach

Francois Roddier, J. Elon Graves, Daniel McKenna, Malcolm Northcott

Proceedings Volume 1542, (1991) https://doi.org/10.1117/12.48812

KEYWORDS: Sensors, Stars, Adaptive optics, Telescopes, Astronomy, Avalanche photodiodes, Photons, Deformable mirrors, Mirrors, Wavefronts

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Showing 5 of 24 publications

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