Mr. James W. Keen Profile

James W. Keen

at Univ of Cambridge

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 20 October 2004 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 | 21 February 2003 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

DIMMWIT: comparing atmospheric seeing values measured by a differential image motion monitor, which is transportable, and COAST

Bridget O'Donovan, John Young, Peter Warner, David Buscher, Donald Wilson, Roger Boysen, E. Seneta, James Keen

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459761

KEYWORDS: Telescopes, Visibility, Charge-coupled devices, Prototyping, Error analysis, Motion measurement, Turbulence, Cameras, Interferometers, Wavefronts

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Proceedings Article | 21 February 2003 Paper

Results from a pinhole spatial filtering system at COAST

James Keen, Peter Warner, David Buscher, Donald Wilson, John Young

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.457153

KEYWORDS: Visibility, Spatial filters, Calibration, Interferometers, Signal to noise ratio, Astronomy, Wavefronts, Astronomical imaging, Telescopes, Optical filters

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Proceedings Article | 21 February 2003 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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