Dr. Ángel A. Alonso-Sánchez Profile

Dr. Ángel A. Alonso-Sánchez

at Instituto de Astrofísica de Canarias

SPIE Involvement:

Author

Publications (35)

Proceedings Article | 26 August 2024 Presentation + Paper

HARMONI at ELT: design and tests results of the instrument cryogenic fast shutter

Yolanda Martín, Elvio Hernandez Suarez, Alejandro Luján, Teodora Viera-Curbelo, Ángel Alonso, Begoña García-Lorenzo

Proceedings Volume 13100, 1310033 (2024) https://doi.org/10.1117/12.3020223

KEYWORDS: Camera shutters, Prototyping, Cryogenics

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Proceedings Article | 26 August 2024 Poster + Paper

HARMONI at ELT: verification tests of opto-mechanical mounts for HARMONI preoptics in cryogenic environment

Alberto Hernández-González, Elvio Hernández Suárez, Luz Maria Montoya Martínez, Miguel Cagigas, Alejandro Antonio Luján González, Begoña García-Lorenzo, Ángel Alonso-Sánchez, Niranjan Thatte

Proceedings Volume 13100, 1310052 (2024) https://doi.org/10.1117/12.3018853

KEYWORDS: Mirrors, Windows, Cryostats, Cryogenics, Vibration, Optical surfaces, Mirror surfaces, Design, Compliance, Deformation

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Proceedings Article | 26 August 2024 Presentation + Paper

HARMONI at ELT: athermal toroidal mirror mount for HARMONI pre-optics

Elvio Hernández, Alberto Hernández, Ángel Alonso, Begoña García-Lorenzo, Niranjan Thatte

Proceedings Volume 13100, 1310034 (2024) https://doi.org/10.1117/12.3018013

KEYWORDS: Mirrors, Design, Optical components, Mirror mounts, Cryogenics, Prototyping, Mirror surfaces

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Proceedings Article | 5 August 2024 Presentation + Paper

HARMONI at ELT: project status and instrument overview

Niranjan Thatte, Dave Melotte, Benoit Neichel, David Le Mignant, Phil Rees, Fraser Clarke, Vanessa Ferraro-Wood, Oscar Gonzalez, Maia Jones, Alonso Álvarez Urueña, Heribert Argelaguet Vilaseca, Santiago Arribas Mocoroa, José Antonio Caballero, Gonzalo José Carracedo Carballal, Alberto Estrada Piqueras, Irene Ferro, Miriam García García, Isabella Lamperti, Miguel Pereira Santaella, Michele Perna, Javier Piqueras Lopez, Nicolas Bouché, Didier Boudon, Eric Daguise, Nicola Domenis, Jérémy Fensch, Olivier Olivier Flasseur, Rémi Giroud, Matthieu Guibert, Aurelien Jarno, Alexandre Jeanneau, Jens-Kristian Krogager, Maud Langlois, Florence Laurent, Magali Loupias, Jean-Emmanuel Migniau, Dieu Nguyen, Laure Piqueras, Alban Remillieux, Johan Richard, Arlette Pecontal, Lisa Bardou, David Barr, Sylvain Cetre, Sofia Dimoudi, Marc Dubbeldam, Andrew Dunn, Dimitri Gadotti, Joss Guy, David King, Anna McLeod, Simon Morris, Tim Morris, Kieran O'Brien, Emily Ronson, Russell Smith, Lazar Staykov, Mark Swinbank, Matteo Accardo, Domingo Alvarez Mendez, Pablo Alberto Fuerte Rodriguez, Elizabeth George, Derek Ives, Leander Mehrgan, Eric Mueller, Javier Reyes, Ralf Conzelmann, Pablo Gutierrez Cheetham, Angel Alonso Sanchez, Giuseppina Battaglia, Miguel Cagigas, Julio Castro-Almazán, Haresh Chulani, Graciela Delgado-García, Patricia Fernandez Izquierdo, Donaji Esparza-Arredondo, Begoña García-Lorenzo, Alberto Hernández González, Elvio Hernández Suárez, Javier Licandro, Enrique Joven, Roberto López López, Alejandro Antonio Lujan Gonzalez, Yolanda Martín Hernando, Ignacio Martín-Navarro, Evencio Mediavilla, Saúl Menéndez Mendoza, Luz Maria Montoya Martínez, José Peñate Castro, Felipe Murgas, Enric Pallé, Álvaro Pérez, Jose Luis Rasilla, Rafael Rebolo, Horacio Rodríguez, Luis Fernando Rodríguez Ramos, Victor Sánchez Béjar, Tariq Shahbaz, Afrodisio Vega Moreno, Teodora Viera, Mickaël Bonnefoy, Tony Bret, Alexis Carlotti, Jean-Jacques Correia, Stéphane Curaba, Alain Delboulbé, Sylvain Guieu, Adrien Hours, Zoltan Hubert, Laurent Jocou, Yves Magnard, Laurence Michaud, Thibaut Moulin, Fabrice Pancher, Patrick Rabou, Sylvain Rochat, Eric Stadler, Thierry Contini, Marie Larrieu, Sébastien Mamessier, Olivier Boebion, Yan Fantei-Caujolle, Daniel Lecron, Philippe Amram, Patrick Blanchard, William Bon, Anne Bonnefoi, Alexandre Bozier, William Ceria, Zalpha Challita, Yannick Charles, Elodie Choquet, Anne Costille, Audrey Delsanti, Kjetil Dohlen, Franck Ducret, Kacem El Hadi, Benjamin Foulon, Jean-Luc Gimenez, Olivier Groussin, Marc Jaquet, Edgard Renault, Paul Rouquette, Patrice Sanchez, Arthur Vigan, Annie Zavagno, Romain Fétick, Thierry Fusco, Cedric Héritier, Jean-Francois Sauvage, Nicolas Vedrenne, Demet Aksoy, Martin Caldwell, Ann Fitzpatrick, Carl Geddert, Peter Hiscock, Emma Johnson, Murali Nalagatla, Louise Saraff, Joe Shreeves, Matthew Tildesley, Mark Wells, Anastasios Aretos, Lee Barrett, Martin Black, Charlotte Bond, Saskia Brierley, Ian Bryson, Amelia Calderhead, Kenny Campbell, James Carruthers, Lee Chapman, William Cochrane, Rory Gillespie, Joel Harman, Douglas Harvey, Eamonn Harvey, Bethany Johnson, Tom Louth, Mike MacIntosh, Anna MacIver, Chris Miller, David Montgomery, Meenu Murali, John Murray, Norman O'Malley, Ruben Sanchez-Janssen, Noah Schwartz, Patrick Smith, Jonathan Strachan, Stephen Todd, Dawn Wasley, Sandi Wilson, Junyi Zhou, Eric Bell, Oleg Gnedin, Kayhan Gultekin, Mario Mateo, Michael Meyer, Jayne Birkby, Liam Boland, Michele Cappellari, Edgar Castillo Dominguez, David Gooding, Kearn Grisdale, Andrea Hidalgo, James Kariuki, Ian Lewis, Kieran McCall, R. Elliot Meyer, Eduard Muslimov, Adam Lowe, Zeynep Ozer, Sophie Paszynska, Dimitra Rigopoulou, Matthias Tecza, Alec York

Proceedings Volume 13096, 1309614 (2024) https://doi.org/10.1117/12.3018520

KEYWORDS: Equipment, Adaptive optics, Design, Telescopes, Spectrographs, Stars, Signal to noise ratio, Image quality, Cameras

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Proceedings Article | 18 July 2024 Poster + Paper

HARMONI at ELT: HIPOTEC electronics and control system

Saúl Menéndez Mendoza, Joan Caseras González, José Miguel Delgado Hernández, Jose Vicente Gigante Ripoll, Elvio Hernández Suárez, Afrodisio Vega Moreno, Begoña García-Lorenzo, Ángel Alonso Sánchez

Proceedings Volume 13096, 130964Z (2024) https://doi.org/10.1117/12.3016035

KEYWORDS: Cryostats, Control systems, Sensors, Photonic integrated circuits, Interfaces, Vacuum, Cryogenics, Engineering, Displays, Design

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Proceedings Article | 18 July 2024 Poster + Paper

HARMONI at ELT: electronic cabinets design

Graciela Delgado-García, Enrique Joven-Álvarez, Luis Rodríguez-Ramos, Saúl Menéndez-Mendoza, Teodora Viera-Curbelo, Yolanda Martín, Haresh Chulani, Ángel Alonso, Begoña García-Lorenzo, Niranjan Thatte

Proceedings Volume 13096, 130964X (2024) https://doi.org/10.1117/12.3020263

KEYWORDS: Equipment, Design, Thermal imaging cameras, Control systems, Temperature metrology, Sensors, Thermal analysis, Thermal modeling, Electronics

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Proceedings Article | 17 June 2024 Presentation + Paper

HARMONI at ELT: pre-optics optical design at FDR

M. Cagigas, B. García-Lorenzo, A. Alonso

Proceedings Volume 13019, 130191S (2024) https://doi.org/10.1117/12.3022362

KEYWORDS: Parabolic mirrors, Mirrors, Off axis mirrors, Telescopes, Cryostats, Image quality, Optical design, Design, Equipment, Optical alignment

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Proceedings Article | 29 August 2022 Poster + Paper

HARMONI: the Extremely Large Telescope first light integral field spectrograph: analysis of toroidal mirrors in pre-optics: tolerance analysis and manufacturing error compensation

M. A. Cagigas, A. Pérez, M. Wells, H. Schnetler, A. Girardot, A. Alonso, B. García-Lorenzo, S. Regalado

Proceedings Volume 12188, 121883M (2022) https://doi.org/10.1117/12.2628782

KEYWORDS: Mirrors, Manufacturing, Tolerancing, Image quality, Spectrographs, Error analysis, Wavefronts, Relays, 3D modeling, Collimation

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Proceedings Article | 29 August 2022 Presentation + Paper

HARMONI at ELT: overview of the capabilities and expected performance of the ELT's first light, adaptive optics assisted integral field spectrograph.

Niranjan Thatte, Dave Melotte, Benoit Neichel, David Le Mignant, Ian Bryson, Fraser Clarke, Vanessa Ferraro-Wood, Thierry Fusco, Oscar Gonzalez, Hermine Schnetler, Matthias Tecza, Sandi Wilson, Alonso Álvarez Urueña, Heribert Vilaseca, Santiago Arribas, Gonzalo José Carracedo Carballale, Alejandro Crespo, Alberto Estrada Piqueras, Miriam García García, Cecilai Martínez Martín, Miguel Pereira Santaella, Michele Perna, Javier Piqueras Lopez, Niolas Bouché, Didier Boudon, Eric Daguise, Karen Disseau, Jérémy Fensch, Adrien Girardot, Matthieu Guibert, Aurélien Jarno, Alexandre Jeanneau, Jens-Kristian Krogager, Florence Laurent, Magali Loupias, Jean-Emmanuel Migniau, Laure Piqueras, Alban Remillieux, Johan Richard, Arlette Pecontal, Lisa Bardou, David Barr, Sylvain Cetre, Rishi Deshmukh, Sofia Dimoudi, Marc Dubbledam, Andrew Dunn, Dimitri Gadotti, Joss Guy, David King, David Little, Anna McLeod, Simon Morris, Tim Morris, Kieran O'Brien, Emily Ronson, Russell Smith, Lazar Staykov, Mark Swinbank, Matthew Townson, Matteo Accardo, Domingo Alvarez Mendez, Elizabeth George, Joshua Hopgood, Derek Ives, Leander Mehrgan, Eric Mueller, Javier Reyes, Ralf Conzelmann, Pablo Gutierrez Cheetham, Ángel Alonso-Sánchez, Giuseppina Battaglia, Miguel Cagigas, Haresh Chulani, Graciela Delgado García, Patricia Fernandez Izquierdo, Ana Belén Fragoso López, Begoña García-Lorenzo, Alberto Hernández González, Elvio Hernandez Suarez, Jose Miguel Herreros Linares, Enrique Joven, Roberto López López, Alejandro Antonio Lujan Gonzalez, Yolanda Martín Hernando, Evencio Mediavilla, Saúl Menéndez Mendoza, Luz Maria Montoya Martínez, José Peñate Castro, Álvaro Pérez, Jose Luis Rasilla, Rafael Rebolo, Luis Fernando Rodríguez Ramos, Afrodisio Vega-Moreno, Teodora Viera, Natacha Zanon Dametto, Alexis Carlotti, Jean-Jacques Correia, Stéphane Curaba, Alain Delboulbe, Sylvain Guieu, Adrien Hours, Zoltan Hubert, Laurent Jocou, Yves Magnard, Thibaut Moulin, Fabrice Pancher, Patrick Rabou, Eric Stadler, Maxime Vérove, Thierry Contini, Marie Larrieu, Olivier Boebion, Yan Fantei-Caujolle, Daniel Lecron, Sylvain Rousseau, Philippe Amram, Olivier Beltramo-Martin, William Bon, Anne Bonnefoi, William Ceria, Zalpha Challita, Yannick Charles, Elodie Choquet, Carlos Correia, Anne Costille, Kjetil Dohlen, Franck Ducret, Kacem El Hadi, Jean-Luc Gach, Jean-Luc Gimenez, Olivier Groussin, Marc Jaquet, Pierre Jouve, Fabrice Madec, Felipe Pedreros, Edgard Renault, Patrice Sanchez, Arthur Vigan, Pascal Vola, Annie Zavago, Romain Fetick, Caroline Lim, Cyril Petit, Jean-Francois Sauvage, Nicolas Védrenne, Fehim Taha Bagci, Martin Caldwell, Ellis Elliott, Peter Hiscock, Emma Johnson, Murali Nalagatla, Aristea Seitis, Mark Wells, Martin Black, Charlotte Bond, Saskia Brierley, Kenny Campbell, Neil Campbell, James Carruthers, William Cochrane, Chris Evans, Joel Harman, William Humphreys, Thomas Louth, Chris Miller, David Montgomery, Meenu Murali, John Murray, Norman O'Malley, Ruben Sanchez-Janssen, Noah Schwartz, Patrick Smith, Jonathan Strachan, Stephen Todd, Stuart Watt, Martyn Wells, Asim Yaqoob, Eric Bell, Oleg Gnedin, Kayhan Gultekin, Mario Mateo, Michael Meyer, Munadi Ahmad, Jayne Birkby, Michael Booth, Michele Cappellari, Edgar Castillo Dominguez, Jorge Chao Ortiz, David Gooding, Kearn Grisdale, Andrea Hidalgo, Laurence Hogan, James Kariuki, Ian Lewis, Adam Lowe, Zeynep Ozer, Laurence Routledge, Dimitra Rigopoulou, Alec York

Proceedings Volume 12184, 1218420 (2022) https://doi.org/10.1117/12.2628834

KEYWORDS: Adaptive optics, Stars, Iterated function systems, Telescopes, Galactic astronomy, Spectrographs, Wavefront sensors, Spatial resolution, Sensors, Calibration

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Proceedings Article | 29 August 2022 Poster + Paper

HARMONI – the Extremely Large Telescope first light integral field spectrograph: pre-optics: stray light analysis

M. A. Garcia, E. G. Fenés, T. Belenguer, A. Alonso, B. García-Lorenzo, S. Regalado

Proceedings Volume 12184, 121842T (2022) https://doi.org/10.1117/12.2628787

KEYWORDS: Scattering, Mirrors, Optical benches, Light scattering, Reflection, Surface roughness, Particles, Optical components, Image filtering, Stray light

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Proceedings Article | 29 August 2022 Poster + Paper

HARMONI at ELT: mechanisms of the pre-optics at CDR

Elvio Hernández, Alejandro Luján, Yolanda Martín, Ángel Alonso, Begoña García-Lorenzo, Niranjan Thatte, Hermine Schnetler

Proceedings Volume 12184, 121842L (2022) https://doi.org/10.1117/12.2627518

KEYWORDS: Switches, Camera shutters, Control systems, Prototyping, Computer programming, Magnetism, Temperature sensors, Cryogenics, Sensors, Polymer optical fibers

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Proceedings Article | 29 August 2022 Poster + Paper

HARMONI at ELT: opto-mechanics of the IFS pre-optics at CDR

Elvio Hernández, Alberto Hernández, Ángel Alonso, Begoña García-Lorenzo, Hermine Schnetler, Niranjan Thatte

Proceedings Volume 12184, 121842J (2022) https://doi.org/10.1117/12.2626988

KEYWORDS: Mirrors, Prototyping, Mirror mounts, Kinematics, Optical components, Adhesives, Interfaces, Cryogenics, Temperature metrology, Optomechanical design

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Proceedings Article | 4 March 2022 Presentation + Paper

Transportable ground station for QKD using adaptive optics

Jorge Socas Negrín, Luis Fernando Rodríguez Ramos, Joan Torras, Iciar Montilla, Ángel Alonso, Pablo González de Chaves, Noelia Martínez Rey

Proceedings Volume 11993, 119930V (2022) https://doi.org/10.1117/12.2607603

KEYWORDS: Adaptive optics, Telescopes, Buildings, Quantum key distribution, Automatic tracking, Optical instrument design, Global Positioning System, Satellites, Atmospheric turbulence, Receivers

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Proceedings Article | 13 December 2020 Presentation + Paper

HARMONI: first light spectroscopy for the ELT: instrument final design and quantitative performance predictions

Niranjan Thatte, Ian Bryson, Fraser Clarke, Vanessa Ferraro-Wood, Thierry Fusco, David Le Mignant, Dave Melotte, Benoit Neichel, Hermine Schnetler, Matthias Tecza, Santiago Arribas, Alejandro Crespo, Alberto Estrada Piqueras, Miriam García García, Miguel Pereira Santaella, Javier Piqueras López, Jeremy Blaizot, Nicholas Bouché, Didier Boudon, Diane Chapuis, Eric Daguise, Karen Disseau, Matthieu Guibert, Aurelien Jarno, Alexandre Jeanneau, Florence Laurent, Magali Loupias, Jean-Emmanuel Migniau, Laure Piqueras, Alban Remillieux, Johan Richard, Arlette Pécontal-Rousset, Lisa Bardou, Madeline Close, Rishi Deshmukh, Sofia Dimoudi, Marc Dubbledam, David King, Simon Morris, Timothy Morris, Kieran O'Brien, Lazar Staykov, Mark Swinbank, Matthew Townson, Eddy Younger, Matteo Accardo, Domingo Avarez Mendez, Ralf Conzelmann, Sebastian Egner, Elizabeth George, Frederic Gonté, Joshua Hopgood, Derek Ives, Leander Mehrgan, Eric Mueller, Celine Peroux, Joel Vernet, Angel Alonso Sanchez, Battaglia Giuseppina, Miguel Cagigas, José Miguel Delgado, Patricia Fernandez Izquierdo, Ana Belén Fragoso López, Maria Begoña Garcia-Lorenzo, Elvio Hernandez Suarez, José Miguel Herreros Linares, Enrique Joven, Roberto López, Yolanda Martín Hernando, Evencio Mediavilla, Ana Monreal, José Peñate Castro, Jose Luis Rasilla, Rafael Rebolo, Luis Fernando Rodríguez-Ramos, Afrodisio Vega Moreno, Teodora Viera, Alexis Carlotti, Jean-Jacques Correia, Alain Delboulbe, Sylvain Guieu, Adrien Hours, Zoltan Hubert, Laurent Jocou, Yves Magnard, Thibaut Moulin, Fabrice Pancher, Patrick Rabou, Eric Stadler, Thierry Contini, Marie Larrieu, Yan Fantei-Caujolle, Daniel Lecron, Sylvain Rousseau, Olivier Beltramo-Martin, William Bon, Anne Bonnefoi, William Ceria, Elodie Choquet, Carlos Correia, Anne Costille, Kjetil Dohlen, Franck Ducret, Kacem El-Hadi, Benoit Epinat, Romain Fetick, Jean-Luc Gach, Olivier Groussin, Issa Jaafar, Joel Le Merrer, Marc Llored, Felipe Pedreros, Edgard Renault, Patrice Sanchez, Arthur Vigan, Pascal Vola, Caroline Lim, Nicola Vedrenne, Cyril Petit, Jean-Francois Sauvage, Taha Bagci, Nick Cann, Jorge Chao Ortiz, Ellis Elliott, Tea Seitis, Ian Tosh, Josh Anderson, Martin Black, Charlotte Bond, Andy Born, Kenny Campbell, Neil Campbell, James Carruthers, William Cochrane, Naomi Dobson, Chris Evans, Angus Gallie, Oscar Gonzalez, Joel Harman, David Henry, William Humphreys, Tom Louth, Chris Miller, David Montgomery, John Murray, Norman O'Malley, Lynn Ritchie, Ruben Sanchez-Janssen, Noah Schwartz, Patrick Smith, Stuart Watt, Martyn Wells, Sandi Wilson, Kayhan Gultekin, Mario Mateo, Michael Meyer, Monica Valluri, Munadi Ahmad, Michael Booth, John Capone, Michele Cappellari, David Gooding, Kearn Grisdale, Andrea Hidalgo, James Kariuki, Ian Lewis, Adam Lowe, Jim Lynn, Alvaro Menduina, Zeynep Ozer, Roy Preece, Dimitra Rigopoulou, Myriam Rodrigues, Laurence Routledge

Proceedings Volume 11447, 114471W (2020) https://doi.org/10.1117/12.2562144

KEYWORDS: Spectroscopes, Adaptive optics, Visible radiation, Spectrographs, Large telescopes, Spectral resolution, Modes of laser operation, Tomography, Quantitative analysis, Computer simulations

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Proceedings Article | 17 November 2017 Open Access

Analysis of large optical ground stations for deep-space optical communications

M. Reyes Garcia-Talavera, C. Rivera, G. Murga, I. Montilla, A. Alonso

Proceedings Volume 10563, 105630Z (2017) https://doi.org/10.1117/12.2304253

KEYWORDS: Telescopes, Space telescopes, Adaptive optics, Optical communications, Satellites, Antennas, Atmospheric Cherenkov telescopes, Sensors, Astronomical imaging, Atmospheric optics

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Inter-satellite and ground to satellite optical communications have been successfully demonstrated over more than a decade with several experiments, the most recent being NASA’s lunar mission Lunar Atmospheric Dust Environment Explorer (LADEE). The technology is in a mature stage that allows to consider optical communications as a high-capacity solution for future deep-space communications [1][2], where there is an increasing demand on downlink data rate to improve science return. To serve these deep-space missions, suitable optical ground stations (OGS) have to be developed providing large collecting areas. The design of such OGSs must face both technical and cost constraints in order to achieve an optimum implementation. To that end, different approaches have already been proposed and analyzed, namely, a large telescope based on a segmented primary mirror, telescope arrays, and even the combination of RF and optical receivers in modified versions of existing Deep-Space Network (DSN) antennas [3][4][5]. Array architectures have been proposed to relax some requirements, acting as one of the key drivers of the present study. The advantages offered by the array approach are attained at the expense of adding subsystems. Critical issues identified for each implementation include their inherent efficiency and losses, as well as its performance under high-background conditions, and the acquisition, pointing, tracking, and synchronization capabilities. It is worth noticing that, due to the photon-counting nature of detection, the system performance is not solely given by the signal-to-noise ratio parameter.

To start with the analysis, first the main implications of the deep space scenarios are summarized, since they are the driving requirements to establish the technical specifications for the large OGS. Next, both the main characteristics of the OGS and the potential configuration approaches are presented, getting deeper in key subsystems with strong impact in the performance. The different configurations are compared from the technical point of view, taking into account the effect of atmospheric conditions. Finally a very preliminary cost analysis for a large aperture OGS is presented.

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Proceedings Article | 27 July 2016 Paper

EDiFiSE full-FPGA adaptive optics: first laboratory results using the IACAT optical ground support equipment

Haresh Chulani, Yolanda Martín, Jesús Fuensalida, Luis F. Rodríguez-Ramos, Carlos Echeandía, Marta Puga, Angel Alonso

Proceedings Volume 9909, 99094Q (2016) https://doi.org/10.1117/12.2233393

KEYWORDS: Adaptive optics, Telescopes, Spectrographs, Adaptive optics, Telescopes, Field programmable gate arrays, Servomechanisms, Turbulence, Mirrors, Signal attenuation, Digital signal processing, Sensors

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Proceedings Article | 27 July 2016 Paper

The bistatic geometry for Na profiling with LGS at Teide Observatory

Julio Castro-Almazán, Ángel Alonso, Jesús Fuensalida, Domenico Bonaccini Calia, Mauro Centrone, Iciar Montilla, Marcos Reyes, Casiana Muñoz-Tuñón

Proceedings Volume 9909, 99093M (2016) https://doi.org/10.1117/12.2232626

KEYWORDS: Sodium, Profiling, Observatories, Adaptive optics, Telescopes, Refraction, Atmospheric propagation, Algorithm development, Lanthanum, Stars

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Proceedings Article | 6 March 2014 Paper

LLCD operations using the Lunar Lasercom OGS Terminal

Zoran Sodnik, Hans Smit, Marc Sans, Igor Zayer, Marco Lanucara, Iciar Montilla, Angel Alonso

Proceedings Volume 8971, 89710W (2014) https://doi.org/10.1117/12.2045510

KEYWORDS: Telescopes, Transmitters, Space telescopes, Modulation, Laser communications, Receivers, Satellites, Space operations, Fiber amplifiers, Cameras

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Proceedings Article | 13 September 2012 Paper

FPGA-based real time controller for high order correction in EDIFISE

L. Rodríguez-Ramos, H. Chulani, Y. Martín, T. Dorta, A. Alonso, J. Fuensalida

Proceedings Volume 8447, 84472R (2012) https://doi.org/10.1117/12.925352

KEYWORDS: Control systems, Deformable mirrors, Field programmable gate arrays, Adaptive optics, Actuators, Wavefront sensors, Servomechanisms, Telescopes, Cameras, Electronics

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Proceedings Article | 11 July 2008 Paper

EDiFiSE: equalized and diffraction-limited field spectrograph experiment

B. García-Lorenzo, J. Fuensalida, M. A. C. Rodríguez-Hernández, A. Alonso, M. Barreto, F. Gracia-Temich, Y. Martín, L. Rodríguez, T. Viera, Y. Padilla, A. Fernández, J. F. M. Escobar-Romero

Proceedings Volume 7014, 70144B (2008) https://doi.org/10.1117/12.787848

KEYWORDS: Optical fibers, Adaptive optics, Spectrographs, Sensors, Telescopes, Deformable mirrors, Attenuators, Prototyping, Field programmable gate arrays, Wavefront sensors

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Proceedings Article | 10 July 2008 Paper

The bistatic LGS scheme for sodium layer height characterization (based on the Teide Observatory experimental setup)

Julio Castro-Almazán, Jesús Fuensalida, Ángel Alonso, Sergio Chueca

Proceedings Volume 7012, 701240 (2008) https://doi.org/10.1117/12.787809

KEYWORDS: Telescopes, Sodium, Observatories, Charge-coupled devices, Adaptive optics, Stars, Laser guide stars, Tunable lasers, Signal to noise ratio, Alternate lighting of surfaces

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Proceedings Article | 27 June 2006 Paper

Testing FPGAs for real-time control of adaptive optics in giant telescopes

Luis Rodríguez-Ramos, Teodora Viera, Guillermo Herrera, José Gigante, Fernando Gago, Ángel Alonso

Proceedings Volume 6272, 62723X (2006) https://doi.org/10.1117/12.669960

KEYWORDS: Cameras, Field programmable gate arrays, Adaptive optics, Telescopes, Actuators, Wavefront sensors, Mirrors, Logic, Deformable mirrors, Clocks

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Proceedings Article | 13 September 2005 Paper

Ground-to-space optical communication characterization

Marcos Reyes, Angel Alonso, Sergio Chueca, Jesus Fuensalida, Zoran Sodnik, Virginie Cessa, Aneurin Bird, Adolfo Comeron, Alejandro Rodriguez, V. Federico Dios, Juan Rubio

Proceedings Volume 5892, 589202 (2005) https://doi.org/10.1117/12.619205

KEYWORDS: Scintillation, Satellites, Optical communications, Atmospheric turbulence, Turbulence, Observatories, Telescopes, Space operations, Space telescopes, Satellite communications

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Proceedings Article | 31 August 2005 Paper

Modeling of power fluctuations induced by refractive turbulence in a multiple-beam ground-to-satellite optical uplink

Adolfo Comeron, Federico Dios, Alejandro Rodriguez, Juan Antonio Rubio, Marcos Reyes, Angel Alonso

Proceedings Volume 5892, 58920O (2005) https://doi.org/10.1117/12.617219

KEYWORDS: Turbulence, Satellites, Scintillation, Atmospheric propagation, Optical communications, Atmospheric optics, Satellite communications, Space operations, Receivers, Observatories

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Proceedings Article | 25 August 2005 Paper

FPGA adaptive optics system test bench

Luis Rodriguez-Ramos, Teodora Viera, Jose Gigante, Fernando Gago, Guillermo Herrera, Angel Alonso, Nicolas Descharmes

Proceedings Volume 5903, 59030D (2005) https://doi.org/10.1117/12.614378

KEYWORDS: Field programmable gate arrays, Adaptive optics, Microlens, Mirrors, Actuators, Cameras, Control systems, Sensors, Deformable mirrors, Wavefront sensors

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Proceedings Article | 11 November 2004 Paper

Mesospheric sodium monitoring for laser guide star

Sergio Chueca, Jesus Fuensalida, Angel Alonso, Marcos Reyes

Proceedings Volume 5572, (2004) https://doi.org/10.1117/12.565698

KEYWORDS: Sodium, Telescopes, Adaptive optics, Observatories, Stars, Laser scattering, Scattering, Laser guide stars, Lamps, Plasma

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Proceedings Article | 11 November 2004 Paper

Performance of satellite-to-ground communications link between ARTEMIS and the Optical Ground Station

Angel Alonso, Marcos Reyes, Zoran Sodnik

Proceedings Volume 5572, (2004) https://doi.org/10.1117/12.565516

KEYWORDS: Turbulence, Satellites, Laser communications, Optical communications, Space telescopes, Statistical analysis, Receivers, Scintillation, Satellite communications, Space operations

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Proceedings Article | 11 November 2004 Paper

Propagation statistics of ground-satellite optical links with different turbulence conditions

Marcos Reyes, Angel Alonso, Sergio Chueca, Jesús Fuensalida, Adolfo Comeron, V. Dios, Alejandro Rodriguez, Juan Rubio, Zoran Sodnik

Proceedings Volume 5572, (2004) https://doi.org/10.1117/12.565600

KEYWORDS: Scintillation, Atmospheric turbulence, Turbulence, Atmospheric propagation, Satellites, Atmospheric modeling, Observatories, Laser communications, Space operations, Atmospheric optics

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Proceedings Article | 20 October 2004 Paper

ESA's bidirectional space-to-ground laser communication experiments

Jose Romba, Zoran Sodnik, Marcos Reyes, Angel Alonso, Aneurin Bird

Proceedings Volume 5550, (2004) https://doi.org/10.1117/12.560934

KEYWORDS: Laser communications, Sensors, Scintillation, Satellites, Telescopes, CCD image sensors, Data communications, Polarization, Optical tracking, Mirrors

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Proceedings Article | 16 June 2004 Paper

Ground-to-satellite optical link tests between Japanese laser communications terminal and European geostationary satellite ARTEMIS

Morio Toyoshima, Shiro Yamakawa, Toshihiko Yamawaki, Katsuyoshi Arai, Marcos Reyes, Angel Alonso, Zoran Sodnik, Benoit Demelenne

Proceedings Volume 5338, (2004) https://doi.org/10.1117/12.530138

KEYWORDS: Optical communications, Atmospheric turbulence, Satellites, Satellite communications, Continuous wave operation, Optical testing, Optical tracking, Scintillation, Laser communications, Atmospheric optics

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Proceedings Article | 6 February 2004 Paper

Experimental test of laser beam propagation with simultaneous measurements of turbulence profiles

Sergio Chueca, Angel Alonso, Marcos Reyes, Jesus Fuensalida, Claudia Hoegmann, Begona Garcia-Lorenzo, Esteban Mendizabal

Proceedings Volume 5237, (2004) https://doi.org/10.1117/12.511563

KEYWORDS: Turbulence, Telescopes, Atmospheric propagation, Laser beam propagation, Rayleigh scattering, Observatories, Optical communications, Atmospheric optics, Gaussian beams, Scintillation

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Proceedings Article | 27 January 2004 Paper

Ground-to-satellite bidirectional laser links for validation of atmospheric turbulence model

Marcos Reyes, Adolfo Comeron, Angel Alonso, Alejandro Rodriguez, Juan Rubio, Victor Dios, Sergio Chueca, Zoran Sodnik

Proceedings Volume 5160, (2004) https://doi.org/10.1117/12.506738

KEYWORDS: Atmospheric modeling, Satellites, Data modeling, Atmospheric turbulence, Scintillation, Atmospheric propagation, Turbulence, Atmospheric optics, Performance modeling, Laser beam propagation

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Proceedings Article | 7 February 2003 Paper

Beam focusing of a laser guide star

Sergio Chueca, Jesus Fuensalida, Marcos Reyes, Angel Alonso, Lotti Jochum

Proceedings Volume 4839, (2003) https://doi.org/10.1117/12.459035

KEYWORDS: Turbulence, Sodium, Observatories, Laser guide stars, Adaptive optics, Laser beam propagation, Atmospheric optics, Atmospheric propagation, Mesosphere, Atmospheric turbulence

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Proceedings Article | 9 December 2002 Paper

Analysis of the preliminary optical links between ARTEMIS and the Optical Ground Station

Marcos Reyes Garcia-Talavera, Sergio Chueca, Angel Alonso, Teodora Viera, Zoran Sodnik

Proceedings Volume 4821, (2002) https://doi.org/10.1117/12.450638

KEYWORDS: Atmospheric propagation, Satellites, Satellite communications, Observatories, Turbulence, Atmospheric modeling, Optical communications, Atmospheric turbulence, Receivers, Scintillation

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Proceedings Article | 26 April 2002 Paper

Preliminary results of the in-orbit test of ARTEMIS with the Optical Ground Station

Marcos Reyes Garcia-Talavera, Zoran Sodnik, Pablo Lopez, Angel Alonso, Teodora Viera, Gotthard Oppenhauser

Proceedings Volume 4635, (2002) https://doi.org/10.1117/12.464083

KEYWORDS: Satellites, Optical communications, Data communications, Acquisition tracking and pointing, Space operations, Satellite communications, Observatories, Polarization, Signal attenuation, Scintillation

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Showing 5 of 35 publications

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