Prof. John E. Baldwin Profile

Prof. John E. Baldwin

at Univ of Cambridge

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 23 June 2006 Paper

Paper

Activities in the COAST group: 2004-2006

Christopher Haniff, John Baldwin, Fabien Baron, Alastair Basden, Nazim Bharmal, Roger Boysen, David Buscher, Julien Coyne, Roger Dace, Martin Fisher, Craig Mackay, Richard Neill, Bridget O'Donovan, Eugene Seneta, Xiaowei Sun, Hrobjartur Thorsteinsson, Peter Warner, Donald Wilson, John Young

Proceedings Volume 6268, 626805 (2006) https://doi.org/10.1117/12.670919

KEYWORDS: Telescopes, Interferometry, Interferometers, Astronomy, Magdalena Ridge Observatory, Prototyping, Image restoration, Visibility, Synthetic apertures, Cameras

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Proceedings Article | 20 October 2004 Paper

Paper

COAST: recent technology and developments

Christopher Haniff, John Baldwin, Alastair Basden, Nazim Bharmal, Roger Boysen, David Buscher, James Keen, Craig Mackay, Bridget O'Donovan, Eugene Seneta, Hrobjartur Thorsteinsson, Nathalie Thureau, Robert Tubbs, Peter Warner, Donald Wilson, John Young

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.552278

KEYWORDS: Telescopes, Interferometers, Astronomy, Image restoration, Phase measurement, Astronomical imaging, Astronomical telescopes, Magdalena Ridge Observatory, Interferometry, Data modeling

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Proceedings Article | 30 September 2004 Paper

Paper

High-resolution imaging in the visible from the ground without adaptive optics: new techniques and results

Craig Mackay, John Baldwin, Nicholas Law, Peter Warner

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.550443

KEYWORDS: Image resolution, Telescopes, Stars, Charge-coupled devices, Adaptive optics, Space telescopes, Cameras, Spectroscopy, Spatial resolution, Imaging spectroscopy

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Proceedings Article | 21 February 2003 Paper

Paper

Ground-based interferometry: the past decade and the one to come

John Baldwin

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.457192

KEYWORDS: Interferometry, Stars, Adaptive optics, Astronomy, Photons, Visibility, Sensors, Signal to noise ratio, Interferometers, Telescopes

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Proceedings Article | 21 February 2003 Paper

Paper

Desktop interferometer for optical synthesis imaging

Peter Lawson, Donald Wilson, John Baldwin

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.457007

KEYWORDS: Interferometers, Stars, Binary data, Microscopes, Fringe analysis, Telescopes, Video, CCD cameras, Synthetic apertures, Cameras

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Proceedings Article | 21 February 2003 Paper

Paper

Astrophysical results from COAST

John Young, John Baldwin, Alastair Basden, Nazim Bharmal, David Buscher, Amanda George, Christopher Haniff, James Keen, Bridget O'Donovan, Debbie Pearson, Hrobjarthur Thorsteinsson, Nathalie Thureau, Robert Tubbs, Peter Warner

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459135

KEYWORDS: Data modeling, Visibility, Stars, Calibration, Opacity, Phase measurement, Bandpass filters, Electronic filtering, Avalanche photodetectors, Error analysis

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Proceedings Article | 21 February 2003 Paper

Paper

Progress at COAST 2000-2002

Christopher Haniff, John Baldwin, Alastair Basden, Nazim Bharmal, Roger Boysen, David Buscher, Amanda George, James Keen, Craig Mackay, Bridget O'Donovan, Debbie Pearson, John Rogers, Bodie Seneta, Hrobjarthur Thorsteinsson, Nathalie Thureau, Robert Tubbs, Peter Warner, Donald Wilson, John Young

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459335

KEYWORDS: Telescopes, Space telescopes, Interferometry, Astronomy, Visibility, Interferometers, Stars, Adaptive optics, Sensors, Phase measurement

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Proceedings Article | 21 February 2003 Paper

Paper

Possible designs for optical interferometric array unit telescopes

John Rogers, Donald Wilson, Christopher Haniff, David Buscher, John Baldwin, Robert Tubbs

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459136

KEYWORDS: Telescopes, Mirrors, Optical instrument design, Interferometers, Optical arrays, Interferometry, Optical design, Wavefronts, Grazing incidence, Chemical elements

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Proceedings Article | 7 February 2003 Paper

Paper

Diffraction-limited I band imaging with faint reference stars

Robert Tubbs, John Baldwin, Craig Mackay

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.457029

KEYWORDS: Stars, Telescopes, Charge-coupled devices, Adaptive optics, Astronomy, Optical telescopes, Speckle, Image quality, Wavefronts, Signal to noise ratio

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Proceedings Article | 30 January 2003 Paper

Paper

Noise-free detectors in the visible and infrared: implications for the design of next-generation AO systems and large telescopes

Craig Mackay, John Baldwin, Robert Tubbs

Proceedings Volume 4840, (2003) https://doi.org/10.1117/12.457980

KEYWORDS: Telescopes, Charge-coupled devices, Stars, Sensors, Adaptive optics, Diffraction, Space telescopes, Imaging spectroscopy, Large telescopes, Imaging systems

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Proceedings Article | 5 July 2000 Paper

Paper

Technologies for a cost-effective astronomical imaging array

David Buscher, John Rogers, John Baldwin, Roger Boysen, Amanda George, Christopher Haniff, Debbie Pearson, Peter Warner, Donald Wilson, John Young

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390187

KEYWORDS: Telescopes, Imaging arrays, Interferometers, Adaptive optics, Astronomical imaging, Optical arrays, Stars, Astronomy, Interferometry, Visibility

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Proceedings Article | 5 July 2000 Paper

Paper

COAST: the current status

Christopher Haniff, John Baldwin, Roger Boysen, Amanda George, David Buscher, Craig Mackay, Debbie Pearson, John Rogers, Peter Warner, Donald Wilson, John Young

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390262

KEYWORDS: Telescopes, Astronomy, Visibility, Infrared radiation, Sensors, Interferometry, Avalanche photodetectors, Astrophysics, Reflectivity, Antireflective coatings

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Proceedings Article | 5 July 2000 Paper

Paper

Taylor's hypothesis: good for nuts

David Saint-Jacques, John Baldwin

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390175

KEYWORDS: Wavefronts, Velocity measurements, Telescopes, Wind measurement, Tin, Chlorine, Calibration, Turbulence, Error analysis, Wavefront sensors

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Proceedings Article | 5 July 2000 Paper

Paper

Performance of new fringe-detecting avalanche photodiodes at COAST

Amanda George, John Baldwin, Roger Boysen, Christopher Haniff, Craig Mackay, Debbie Pearson, John Rogers, Peter Warner, Donald Wilson, John Young

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390253

KEYWORDS: Avalanche photodetectors, Sensors, Signal to noise ratio, Photon counting, Avalanche photodiodes, Telescopes, Interference (communication), Visibility, Stars, Astatine

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Proceedings Article | 5 July 2000 Paper

Paper

Recent astronomical results from COAST

John Young, John Baldwin, Roger Boysen, Amanda George, Christopher Haniff, Craig Mackay, Debbie Pearson, John Rogers, Peter Warner, Donald Wilson, Richard Wilson

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390242

KEYWORDS: Stars, Visibility, Telescopes, Data modeling, Astronomy, Black bodies, Calibration, Infrared radiation, Infrared imaging, Distortion

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Proceedings Article | 24 July 1998 Paper

Paper

Current status of COAST

John Baldwin, Roger Boysen, Christopher Haniff, Peter Lawson, Craig Mackay, John Rogers, David Saint-Jacques, Peter Warner, Donald Wilson, John Young

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317140

KEYWORDS: Telescopes, Visibility, Stars, Phase measurement, Interferometers, Imaging arrays, Atmospheric optics, Optical arrays, Mirrors, Wavefronts

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Proceedings Article | 24 July 1998 Paper

Paper

Miniature beam combiners for optical and NIR interferometers

John Rogers, John Baldwin, Donald Wilson

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317169

KEYWORDS: Beam splitters, Mirrors, Telescopes, Space telescopes, Optical alignment, Glasses, Interferometers, Near infrared, Optics manufacturing, Fiber optics

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Proceedings Article | 24 July 1998 Paper

Paper

Spatial filtering using pinholes at COAST

David Saint-Jacques, John Baldwin, Roger Boysen, Christopher Haniff, Peter Lawson, John Rogers, Peter Warner, Donald Wilson, John Young

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317143

KEYWORDS: Visibility, Spatial filters, Telescopes, Calibration, Wavefronts, Signal to noise ratio, Sensors, Modulation, Adaptive optics, Atmospheric optics

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Proceedings Article | 24 July 1998 Paper

Paper

Multiwavelength fringe measurement with a CCD spectrometer at COAST

Peter Lawson, John Baldwin, Peter Warner, Roger Boysen, Christopher Haniff, John Rogers, David Saint-Jacques, Donald Wilson, John Young, Craig Mackay

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317142

KEYWORDS: Visibility, Charge-coupled devices, Spectroscopy, Stars, Avalanche photodetectors, Modulation, CCD cameras, Telescopes, Sensors, Spatial frequencies

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Proceedings Article | 24 July 1998 Paper

Paper

COAST in the near infrared: solutions for infrared interferometry

John Young, John Baldwin, Martin Beckett, Roger Boysen, Christopher Haniff, Peter Lawson, Craig Mackay, John Rogers, David Saint-Jacques, Peter Warner, Donald Wilson

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317141

KEYWORDS: Infrared radiation, Sensors, Visibility, Phase measurement, Telescopes, Infrared imaging, Infrared detectors, Visible radiation, Infrared sensors, Interferometry

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Proceedings Article | 21 March 1997 Paper

Paper

Developments at COAST

Peter Warner, John Baldwin, Roger Boysen, David Burns, Christopher Haniff, Peter Lawson, Craig Mackay, John Rogers, Tania Scott, Donald Wilson, John Young

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269072

KEYWORDS: Telescopes, Visibility, Interferometers, Sensors, Cameras, Astronomy, Synthetic apertures, Astronomical telescopes, Optical components, Avalanche photodetectors

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Proceedings Article | 21 March 1997 Paper

Paper

Astronomical results from COAST

David Burns, John Baldwin, Peter Warner, Roger Boysen, Peter Lawson, Craig Mackay, John Rogers, Christopher Haniff, Donald Wilson, Tania Scott, John Young

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269078

KEYWORDS: Visibility, Phase measurement, Astronomy, Telescopes, Interferometers, Stars, Astronomical imaging, Synthetic apertures, Calibration, Radio optics

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Proceedings Article | 21 March 1997 Paper

Paper

Future optical interferometer design

Peter Lawson, John Rogers, Christopher Haniff, John Baldwin, Roger Boysen, David Burns, Peter Warner, Donald Wilson

Proceedings Volume 2871, (1997) https://doi.org/10.1117/12.269073

KEYWORDS: Interferometers, Telescopes, Adaptive optics, Interferometry, Optical design, Synthetic apertures, Visibility, Stars, Image resolution, Phase measurement

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Proceedings Article | 9 June 1994 Paper

Paper

Design and performance of COAST

John Baldwin, Roger Boysen, Graham Cox, Christopher Haniff, John Rogers, Peter Warner, Donald Wilson, Craig Mackay

Proceedings Volume 2200, (1994) https://doi.org/10.1117/12.177233

KEYWORDS: Telescopes, Mirrors, Calibration, Sensors, Visibility, Stars, Photons, Avalanche photodetectors, Phase shift keying, Atmospheric optics

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Proceedings Article | 9 June 1994 Paper

Paper

Atmospheric phase fluctuation measurement: interferometric results from the WHT and COAST telescopes

Christopher Haniff, John Baldwin, Peter Warner, Tania Scott

Proceedings Volume 2200, (1994) https://doi.org/10.1117/12.177257

KEYWORDS: Telescopes, Phase measurement, Turbulence, Interferometers, Data modeling, Interferometry, Laminated object manufacturing, Wavefronts, Atmospheric optics, Astronomy

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Proceedings Article | 9 June 1994 Paper

Paper

COAST: its current status, operation, and results

John Baldwin, Roger Boysen, Graham Cox, Christopher Haniff, John Rogers, Peter Warner, Donald Wilson, Craig Mackay

Proceedings Volume 2200, (1994) https://doi.org/10.1117/12.177232

KEYWORDS: Visibility, Telescopes, Avalanche photodetectors, Sensors, Control systems, Radio optics, Atmospheric optics, Stars, Fringe analysis, Astronomy

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Proceedings Article | 31 May 1994 Paper

Paper

Avalanche photodiodes and area CCDs for fast-guiding and wavefront-sensing applications

Craig Mackay, John Baldwin, John Rogers, Graham Cox

Proceedings Volume 2201, (1994) https://doi.org/10.1117/12.176096

KEYWORDS: Charge-coupled devices, Wavefront sensors, Stars, Sensors, Telescopes, Avalanche photodetectors, CCD image sensors, Avalanche photodiodes, Adaptive optics, Photon counting

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Showing 5 of 27 publications

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