Dr. Avinash Surendran Profile

Dr. Avinash Surendran

Postdoctoral Fellow at WM Keck Observatory

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Author

Publications (14)

Proceedings Article | 28 August 2024 Presentation

A review of super-resolution enabling tomographic reconstructors in adaptive optics

Carlos Correia, Pierre Jouve, Cédric Taïssir Héritier, Guido Agapito, Tom Major, Jesse Cranney, Yoshito Ono, Sylvain Oberti, Avinash Surendran

Proceedings Volume 13097, 130970Z (2024) https://doi.org/10.1117/12.3020060

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Proceedings Article | 27 August 2024 Presentation + Paper

Adaptive optics at W. M. Keck Observatory

P. Wizinowich, A. Bouchez, E. Marin, S. Cetre, J. Chin, C. Correia, M. van Dam, J.-R. Delorme, L. Gers, C. Guthery, S. Karkar, S. Kwok, S. Lilley, J. Lyke, P. Richards, M. Service, J. Steiner, A. Surendran, K. Tsubota, E. Wetherell, M. Bottom, R. Dekany, A. Ghez, P. Hinz, M. Liu, J. Lu, R. Jensen-Clem, M. Millar-Blanchaer, E. Peretz, S. Sallum, T. Treu, S. Wright

Proceedings Volume 13097, 130970K (2024) https://doi.org/10.1117/12.3017853

KEYWORDS: Adaptive optics, Wavefront sensors, Telescopes, Wavefront errors, Deformable mirrors, Cameras, Tomography

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Proceedings Article | 27 August 2024 Poster + Paper

Enabling the next generation of Keck AO with the real time controller upgrade

Eduardo Marin, Jason C. Chin, Sylvain Cetre, Peter Wizinowich, Sam Ragland, Ed Wetherell, Avinash Surendran, Antonin Bouchez, Jacques-Robert Delorme, Scott Lilley, James Lyke, Maxwell Service, Kevin Tsubota, Carlos Correia, Marcos van Dam, Roberto Biasi, Christian Patauner, Dietrich Pescoller, Karl Glazebrook, Andrew Jameson, Will Gauvin, Francois Rigaut, Damien Gratadour, Julien Bernard

Proceedings Volume 13097, 1309760 (2024) https://doi.org/10.1117/12.3016792

KEYWORDS: Real-time computing, Adaptive optics, Cameras, Wavefront sensors, CCD cameras, Keck Observatory, Computer hardware, Telescopes, Telecommunications, Field programmable gate arrays

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Proceedings Article | 30 August 2022 Poster + Paper

An optical distortion solution for the Keck I OSIRIS Imager

Matthew S. Freeman, Jessica Lu, Jim Lyke, Jacques Delorme, Emily Ramey, Grace Jung, Sylvain Cetre, Scott Lilley, Paul Richards, Ed Wetherell, Avinash Surendran, Anna Coerver, Peter Wizinowich

Proceedings Volume 12185, 121853R (2022) https://doi.org/10.1117/12.2630712

KEYWORDS: Distortion, Stars, Hubble Space Telescope, Imaging systems, Telescopes, Sensors, Refraction, Mahalanobis distance, Detection and tracking algorithms, Data modeling

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Proceedings Article | 30 August 2022 Presentation + Paper

Keck adaptive optics facility: real time controller upgrade

Jason C. Chin, S. Cetre, P. Wizinowich, S. Ragland, S. Lilley, E. Wetherell, A. Surendran, C. Correia, E. Marin, R. Biasi, C. Pataunar, D. Pescoller, K. Glazebrook, A. Jameson, W. Gauvin, F. Rigaut, D. Gratadour, J. Bernard

Proceedings Volume 12185, 121850V (2022) https://doi.org/10.1117/12.2629614

KEYWORDS: Adaptive optics, Cameras, Sensors, Real-time computing, Control systems, Computer architecture, Wavefront sensors, Laser guide stars, Field programmable gate arrays, Imaging systems

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Proceedings Article | 30 August 2022 Presentation + Paper

Keck All sky Precision Adaptive optics program overview

P. Wizinowich, J. Lu, S. Cetre, J. Chin, C. Correia, J.-R. Delorme, L. Gers, S. Lilley, J. Lyke, E. Marin, S. Ragland, P. Richards, A. Surendran, E. Wetherell, C.-F. Chen, D. Chu, T. Do, C. Fassnacht, M. Freeman, A. Gautam, A. Ghez, L. Hunter, T. Jones, M. Liu, D. Mawet, C. Max, M. Morris, M. Phillips, J.-B. Ruffio, N.-E. Rundquist, S. Sabhlok, S. Terry, T. Treu, S. Wright

Proceedings Volume 12185, 121850Q (2022) https://doi.org/10.1117/12.2628275

KEYWORDS: Adaptive optics, Telescopes, Tomography, Real-time computing, Sensors, Calibration, Point spread functions, Device simulation, Turbulence, Mirrors

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Proceedings Article | 30 August 2022 Presentation + Paper

Daytime calibration and testing of the Keck All sky Precision Adaptive optics tomography system

Avinash Surendran, Jacques Delorme, Carlos Correia, Steve Doyle, Sam Ragland, Paul Richards, Peter Wizinowich, Philip Hinz, Daren Dillon, Cesar Laguna, Sylvain Cetre, Scott Lilley, Ed Wetherell, Jason C. Chin, Eduardo Marin

Proceedings Volume 12185, 121851V (2022) https://doi.org/10.1117/12.2628264

KEYWORDS: Adaptive optics, Tomography, Calibration, Turbulence, Real-time computing, Relays, Light sources, Device simulation, Wavefront sensors, Telescopes

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Proceedings Article | 29 August 2022 Presentation + Paper

Innovations and advances in instrumentation at the W. M. Keck Observatory, vol. II

Marc Kassis, Steve Allen, Carlos Alvarez, Ravinder Banyal, Robert Bertz, Charles Beichman, Aaron Brown, Matthew Brown, Gerald Cabak, Kevin Bundy, Sylvain Cetre, Jason Chin, Mark Chun, Will Deich, Richard Dekany, Jacques Delorme, Mark Devenot, Greg Doppmann, Michael Fitzgerald, Jason Fucik, Grant Hill, Philip Hinz, Bradford Holden, Andrew Howard, Maodong Gao, Steve Gibson, Percy Gomez, Colby Gottschalk, Peter Gillingham, Tucker Jones, Nemanja Jovanovic, Evan Kirby, Quinn Konopacky, Shanti Krishnan, Renate Kupke, James Larkin, Stephanie Leifer, Hilton Lewis, Scott Lilley, Jessica Lu, James Lyke, Nick MacDonald, Eduardo Marin, Matt Matuszewski, Dimitri Mawet, Rosalie McGurk, Maxwell Millar-Blanchaer, Reston Nash, Craig Nance, James Neill, John O'Meara, Eliad Peretz, Claire Poppett, John Mather, Matthew Radovan, Mitsuko Roberts, Sam Ragland, Kodi Rider, Constance Rockosi, Dale Sandfor, Boqiang Shen, Charles Steidel, Sunil Simha, Andy Skemer, Deno Stelter, Avinash Surendran, James Thorne, Ben McCarney, Kyle Lanclos, Ashley Baker, Ryan Rubenzahl, Arpita Roy, Sam Halverson, Jerry Edelstein, Christopher Martin, Maureen Savage, Dale Sandford, Stephanie Sallum, Josh Walawender, Peter Wizinowich, Kyle Westfall, Kerry Vahala, Shelley Wright, Truman Wold, Sherry Yeh

Proceedings Volume 12184, 1218405 (2022) https://doi.org/10.1117/12.2628630

KEYWORDS: Adaptive optics, Spectrographs, Exoplanets, Sensors, Spectroscopy, Imaging systems, Telescopes, Planets, Cameras, Observatories

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SPIE Journal Paper | 17 June 2021 Open Access

Generalized approach to compensate for low- and high-frequency errors in fast Fourier transform-based phase screen simulations

Sorabh Chhabra, Jyotirmay Paul, Anamparambu Ramaprakash, Avinash Surendran

JATIS, Vol. 7, Issue 02, 025007, (June 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.2.025007

KEYWORDS: MATLAB, Fourier transforms, Telescopes, Matrices, Device simulation, Atmospheric turbulence, Atmospheric propagation, Astrophysics, Astronomy, Zernike polynomials

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Proceedings Article | 13 December 2020 Presentation + Paper

Keck all sky precision adaptive optics

P. Wizinowich, J. Chin, C. Correia, J. Lu, T. Brown, K. Casey, S. Cetre, J.-R. Delorme, L. Gers, L. Hunter, S. Lilley, S. Ragland, A. Surendran, E. Wetherell, A. Ghez, T. Do, T. Jones, M. Liu, D. Mawet, C. Max, M. Morris, T. Treu, S. Wright

Proceedings Volume 11448, 114480E (2020) https://doi.org/10.1117/12.2560017

KEYWORDS: Adaptive optics, Point spread functions, Imaging spectroscopy, Sensing systems, Image quality, Tomography, Field spectroscopy, Imaging systems, Laser development, Wavefront sensors

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Proceedings Article | 13 December 2020 Poster + Presentation + Paper

Gaussian phase autocorrelation as an accurate compensator for FFT-based atmospheric phase screen simulations

Sorabh Chhabra, Jyotirmay Paul, A. Ramaprakash, Avinash Surendran

Proceedings Volume 11448, 114487U (2020) https://doi.org/10.1117/12.2575934

KEYWORDS: Atmospheric turbulence, Large screens

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SPIE Journal Paper | 31 July 2018

Scalable platform for adaptive optics real-time control, part 2: field programmable gate array implementation and performance

Avinash Surendran, Mahesh Burse, Anamparambu Ramaprakash, Padmakar Parihar

JATIS, Vol. 4, Issue 03, 039002, (July 2018) https://doi.org/10.1117/12.10.1117/1.JATIS.4.3.039002

KEYWORDS: Adaptive optics, Field programmable gate arrays, Clocks, Digital signal processing, Reconstruction algorithms, Interfaces, Logic, Adaptive control, Computing systems, Telescopes

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SPIE Journal Paper | 31 July 2018

Scalable platform for adaptive optics real-time control, part 1: concept, architecture, and validation

Avinash Surendran, Mahesh Burse, Anamparambu Ramaprakash, Jyotirmay Paul, Hillol Das, Padmakar S. Parihar

JATIS, Vol. 4, Issue 03, 039001, (July 2018) https://doi.org/10.1117/12.10.1117/1.JATIS.4.3.039001

KEYWORDS: Adaptive optics, Field programmable gate arrays, Interfaces, Wavefronts, Actuators, Adaptive control, Computer simulations, Telescopes, Logic, Wavefront sensors

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Proceedings Article | 15 June 2015 Paper

Development of a scalable generic platform for adaptive optics real time control

Avinash Surendran, Mahesh Burse, A. Ramaprakash, Padmakar Parihar

Proceedings Volume 9654, 965425 (2015) https://doi.org/10.1117/12.2180704

KEYWORDS: Adaptive optics, Field programmable gate arrays, Clocks, Wavefront sensors, Control systems, Charge-coupled devices, Telescopes, Wavefronts, Logic, Sensors

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Showing 5 of 14 publications

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