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Your search keyword '"Butterley, A."' showing total 13 results
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13 results on '"Butterley, A."'

3. Tomography for Astronomical Adaptive Optics using the CANARY On-Sky Demonstrator

Author

Andy Longmore, Richard Wilson, Timothy Butterley, Simon L. Morris, Colin Dickson, Eric Stadler, David Atkinson, Fabrice Vidal, Carine Morel, G. Talbot, Tim Morris, J-M. Huet, Urban Bitenc, Nigel Dipper, Stephen Todd, D. Perret, Gérard Rousset, Eric Gendron, Arnaud Sevin, P. Feautrier, F. Chemlac, M. Cohen, James Osborn, David Henry, Andrew P. Reeves, Richard M. Myers, Damien Gratadour, Tristan Buey, J-L. Gach, Alastair Basden, and E. Younger

Subjects
Wavefront, business.industry, Deformable mirror, law.invention, Telescope, Optics, Geography, Laser guide star, law, Extremely Large Telescope, William Herschel Telescope, Guide star, business, Adaptive optics, Remote sensing
Abstract

CANARY is an on-sky demonstrator instrument for the investigation of novel forms of tomographic Adaptive Optics (AO) which are required by the prospective European Extremely Large Telescope (E-ELT). CANARY is deployed on the 4.2m William Herschel Telescope in the Canary Islands, Spain. In its most evolved variant (Phase C2), CANARY employs four Laser Guide Star (LGS) Wavefront Sensors (WFS) and three Natural Guide Star (NGS) WFS to perform tomography on the turbulent atmospheric volume above the telescope. The projected wavefront phase error for a particular line of sight is then corrected by two Deformable Mirrors (DMs), and the resultant residual wavefront error is monitored by a further NGS WFS and an image recording camera. We outline the CANARY design, and present the most recent results obtained with a novel open/closed loop control approach designed to mimic the E-ELT.

Published
2016
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4. Optical turbulence profiling and applications for astronomy

Author

James Osborn, Richard Wilson, Harry Shepherd, and Timothy Butterley

Subjects
Physics::Fluid Dynamics, Nonlinear Sciences::Chaotic Dynamics, Profiling (computer programming), Physics, Point spread function, Optics, Turbulence, business.industry, Optical turbulence, Atmospheric turbulence, business, Refractive index, Atmospheric optics
Abstract

Recovery of the vertical profile of atmospheric turbulence strength from optical crossed-beam measurements is reviewed with particular reference to the effects of deviations from the commonly assumed Kolmogorov turbulence spectrum.

Published
2011
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5. Tomography for Astronomical Adaptive Optics using the CANARY On-Sky Demonstrator

Author

Gendron, E., primary, Morris, T., additional, Basden, A., additional, Vidal, F., additional, Buey, T., additional, Gratadour, D., additional, Morel, C., additional, Gach, J-L., additional, Feautrier, P., additional, Stadler, E., additional, Chemlac, F., additional, Cohen, M., additional, Sevin, A., additional, Younger, E., additional, Osborn, J., additional, Henry, D., additional, Dipper, N., additional, Wilson, R., additional, Butterley, T., additional, Bitenc, U., additional, Reeves, A., additional, Huet, J-M., additional, Perret, D., additional, Dickson, C., additional, Atkinson, D., additional, Longmore, A., additional, Todd, S., additional, Talbot, G., additional, Morris, S., additional, Rousset, G., additional, and Myers, R., additional

Published
2016
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6. CANARY: An on-sky laser guide star multiple object AO demonstrator

Author

Aglae Kellerer, Eddy Younger, Stephen Todd, Andy Longmore, Andrés Guesalaga, Colin Dickson, Dani Guzman, G. Talbot, Fabrice Vidal, Gérard Rousset, Nigel Dipper, Zoltan Hubert, Tim Morris, Richard M. Myers, Michel Marteaud, Thierry Fusco, Damien Gratadour, Ali Basden, Fanny Chemla, Mark A. Harrison, David Henry, Eric Gendron, C. N. Dunlop, Deli Geng, and Timothy Butterley

Subjects
Laser guide star, Optics, Geography, business.industry, Sky, media_common.quotation_subject, Strehl ratio, business, Object (computer science), Deformable mirror, Photon counting, media_common, Remote sensing
Abstract

CANARY is the on-sky LGS MOAO demonstrator for the proposed EAGLE E-ELT instrument. The CANARY design is described here for the initial experimental phases. Simulations of system performance predict an H-band Strehl ratio of 0.27-0.33.

Published
2009
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7. Monte-Carlo simulation of EAGLE

Author

Richard M. Myers, Alastair Basden, and Timothy Butterley

Subjects
Physics, Eagle, Wavefront, biology, business.industry, Monte Carlo method, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Deformable mirror, Optics, biology.animal, Code (cryptography), business, Adaptive optics, Spectrograph, Astrophysics::Galaxy Astrophysics
Abstract

The EAGLE instrument for the E-ELT is a multi-IFU spectrograph, that uses a MOAO system for wavefront correction. We present Monte-Carlo AO simulation results, comparisons with an analytical code and details of the simulation package.

Published
2009
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8. Adaptive Optics Simulations for Extremely Large Telescopes

Author

Mark A. Harrison, Richard Wilson, Alastair Basden, Timothy Butterley, and Richard M. Myers

Subjects
Point spread function, Physics, Optics, business.industry, Electronic engineering, Physics::Accelerator Physics, Hardware acceleration, Atmospheric turbulence, Adaptive optics systems, Adaptive optics, Field-programmable gate array, business, Power (physics)
Abstract

The simulation of adaptive optics systems for extremely large telescopes is not trivial, requiring large amounts of processing power and memory. We give details of the Durham adaptive optics simulation platform, including hardware acceleration facilities.

Published
2007
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10. CANARY MOAO demonstrator: on-sky first results

Author

Brangier, M., primary, Vidal, F., additional, Morris, T., additional, Gendron, E., additional, Hubert, Z., additional, Basden, A., additional, Rousset, G., additional, Myers, R., additional, Chemla, F., additional, Longmore, A., additional, Butterley, T., additional, Dipper, N., additional, Dunlop, C., additional, Fasola, G., additional, Geng, D., additional, Gratadour, D., additional, Henry, D., additional, Huet, J-M, additional, Laporte, P., additional, Looker, N., additional, Marteaud, M., additional, Perret, D., additional, Sevin, A., additional, Shepherd, H., additional, Talbot, G., additional, Younger, E., additional, and Wilson, R., additional

Published
2011
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11. CANARY: An on-sky laser guide star multiple object AO demonstrator

Author

Morris, Tim, primary, Hubert, Zoltan, additional, Myers, Richard, additional, Gendron, Eric, additional, Longmore, Andy, additional, Rousset, Gerard, additional, Talbot, Gordon, additional, Fusco, Thierry, additional, Dipper, Nigel, additional, Vidal, Fabrice, additional, Henry, David, additional, Gratadour, Damien, additional, Butterley, Tim, additional, Chemla, Fanny, additional, Guzman, Dani, additional, Younger, Eddy, additional, Kellerer, Aglae, additional, Harrison, Mark, additional, Marteaud, Michel, additional, Geng, Deli, additional, Basden, Ali, additional, Guesalaga, Andres, additional, Dunlop, Colin, additional, Todd, Stephen, additional, and Dickson, Colin, additional

Published
2009
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