Dr. Oliver I. J. Ryan Profile

Dr. Oliver I. J. Ryan

at National Univ of Ireland/Galway

SPIE Involvement:

Author

Publications (5)

Proceedings Article | 7 November 2007 Paper

The construction of an optical particle counter with sub- and super-micron counting capability

R. Greaney, O. Ryan, S. Jennings, C. O'Dowd

Proceedings Volume 6739, 673914 (2007) https://doi.org/10.1117/12.768170

KEYWORDS: Particles, Light scattering, Laser scattering, Scattering, Atmospheric particles, Optical proximity correction, Reflectors, Lenses, Backscatter, Mirrors

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Proceedings Article | 29 June 2006 Paper

ELT instrument concepts: impact on telescope and adaptive optics design

Colin Cunningham, Eli Atad-Ettadgui, Roland Bacon, Bernhard Brandl, Jean-Gabriel Cuby, Gavin Dalton, William Dent, Sandro D'Odorico, Ian Egan, Chris Evans, Francois Hammer, Norbert Hubin, Pascal Jagourel, Marcus Kasper, Florian Kerber, Rainer Lenzen, Iciar Montilla, Gil Moretto, Simon Morris, Luca Pasquini, Eric Prieto, Andreas Quirrenbach, Michael Redfern, Oliver Ryan, Mel Strachan, Christophe Verinaud

Proceedings Volume 6269, 62691R (2006) https://doi.org/10.1117/12.671274

KEYWORDS: Telescopes, Adaptive optics, Galactic astronomy, Spectrographs, Imaging spectroscopy, Spectroscopy, Imaging systems, Mirrors, Planets, Space telescopes

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Proceedings Article | 15 June 2006 Paper

High-speed imaging photon-counting system

O. Ryan, M. Redfern, A. Shearer

Proceedings Volume 6276, 62760G (2006) https://doi.org/10.1117/12.670469

KEYWORDS: Avalanche photodetectors, Diodes, Microchannel plates, Imaging systems, Sensors, Photon counting, Photometry, Resistance, Telescopes, Spatial resolution

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Proceedings Article | 15 June 2006 Paper

Photon counting camera for high-resolution astronomy

O. Ryan, M. Redfern, A. Shearer

Proceedings Volume 6276, 62760I (2006) https://doi.org/10.1117/12.670486

KEYWORDS: Avalanche photodetectors, Charge-coupled devices, Mirrors, Astronomy, Stars, Photometry, Telescopes, Photon counting, Head, Lenses

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Proceedings Article | 27 August 2003 Paper

A modular camera system for high time-resolution photometry

Daniel Buckton, Oliver Ryan, Andrew Shearer, R. Michael Redfern, Raymond Butler

Proceedings Volume 4876, (2003) https://doi.org/10.1117/12.464065

KEYWORDS: Cameras, Imaging systems, Sensors, Avalanche photodetectors, Electronics, Quantum efficiency, Telescopes, Photon counting, Polarization, Data archive systems

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