Mr. Luigi Andolfato Profile

Luigi Andolfato

Software Engineer at European Southern Observatory

SPIE Involvement:

Author

Publications (27)

Proceedings Article | 11 September 2024 Presentation + Paper

Advancements of the ELT M1 figure control loop: edge sensor fault detection and management of actuator non-linearities in a large MIMO system

Andreas Reinacher, Babak Sedghi, Martin Dimmler, Luigi Andolfato

Proceedings Volume 13094, 130941D (2024) https://doi.org/10.1117/12.3016911

KEYWORDS: Actuators, Mirrors, Control systems, Wavefront errors, Matrices, Sensors, Singular value decomposition, Device simulation, Calibration

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The primary mirror of ESO’s Extremely Large Telescope contains 798 hexagonal segments, which are equipped with position actuators (PACT) for segment piston-tip-tilt actuation and edge sensors (ES) to measure the relative segment displacements. PACT and ES are used for M1 figure control, i.e. for maintaining the reference shape of the primary mirror. Due to the sheer number of used sensors (4524), ES failures cannot be excluded. In order to minimize the influence of such failures on observations, an automated approach for ES failure handling has been developed. Besides identification of one or more malfunctioning sensors, replacement values for the erroneous sensor signals are calculated and fed back into the figure loop, enabling uninterrupted observations. The figure loop position actuators are hybrid actuators, combining brushless DC motors for a large range of motion with Piezo actuators for high accuracy and fast settling. Motions larger than the Piezo range (∼10μm) are restricted to a maximum velocity of 100μm/s. Since the figure loop is controlled in modal space such a rate limit introduces non-linearities in this large Multi-Input Multi-Output (MIMO) system resulting in cross-coupling of modes and undesirable transient behavior. A custom management scheme for MIMO systems with actuator non-linearities has been developed and successfully tested. It minimizes overshoots and cross-coupling between modes during transitions considering the PACT velocity limitation. In addition, this scheme simplifies closure of the figure loop from any initial condition. This paper covers advancements in both areas. After a brief description of the relevant subsystems, the algorithm to detect faulty ES is introduced. The closely related calculation of ideal replacement values is shown and simulation results illustrate the effectiveness of the Fault Detection, Isolation & Recovery (FDIR) measures for the ELT M1. Then the theory of considering actuator non-linearities in large MIMO systems is introduced. A custom scheme is derived and applied to the ELT M1 Figure Loop. Simulation results and measurements taken with ESO’s seven segment M1 Test Facility are presented.

Proceedings Article | 25 July 2024 Presentation + Paper

Advancements in astronomical instrumentation: a new control software framework for ELT and VLT instruments at ESO

M. Kiekebusch, L. Andolfato, D. Del Valle, S. Feyrin, A. Hoffstadt, J. Knudstrup, C. Moins, I. Muñoz, D. Popovic, C. Reinero, C. Rosenquist, P. Sivera, R. Schmutzer, P. Szubiakowski

Proceedings Volume 13101, 131010I (2024) https://doi.org/10.1117/12.3020248

KEYWORDS: Control systems, Data acquisition, Human-machine interfaces, Cryogenics, Control software, Software development, Cameras

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Proceedings Article | 25 July 2024 Presentation + Paper

ELT tracking local supervisors design and development status

Luigi Andolfato, Javier Argomedo, Alessandro Caproni, Gianluca Chiozzi, Nick Kornweibel, Filip Demski

Proceedings Volume 13101, 1310116 (2024) https://doi.org/10.1117/12.3020049

KEYWORDS: Telescope instrument control software, Acquisition tracking and pointing, Telescopes, Astronomy, Control software

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Proceedings Article | 25 July 2024 Presentation + Paper

Status of the ELT control software development

Gianluca Chiozzi, Luigi Andolfato, Javier Argomedo, Carlos Diaz Cano, Robert Frahm, Josef Hofer, Bogdan Jeram, Nick Kornweibel, Federico Pellegrin, Marcus Schilling, Heiko Sommer, Arturo Hoffstadt Urrutia

Proceedings Volume 13101, 1310105 (2024) https://doi.org/10.1117/12.3019706

KEYWORDS: Control systems, Telescopes, Real-time computing, Design, Sensors, Interfaces, Mirrors, Wavefronts

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Proceedings Article | 6 December 2020 Presentation + Paper

Goal-oriented architecture for telescope control software

L. Andolfato, R. Karban

Proceedings Volume 11452, 114521C (2020) https://doi.org/10.1117/12.2575434

KEYWORDS: Telescopes, Control systems, Computer architecture, Software development, Sensors, Actuators, Computing systems, Wavefronts, Vignetting, Optical instrument design

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Proceedings Article | 10 July 2018 Presentation

ESO ELT M1 local control system software design and development status (Conference Presentation)

Javier Argomedo, Luigi Andolfato, Carlos Diaz Cano, Robert Frahm, Thomas Grudzien, Nick Kornweibel, Diogo Ribeiro Gomes dos Santos

Proceedings Volume 10707, 107070V (2018) https://doi.org/10.1117/12.2313344

KEYWORDS: Software development, Control systems design, Mirrors, Liquid crystals, Sensors, Actuators, Switches, Photonic integrated circuits, Control systems, Electronics

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Proceedings Article | 9 July 2018 Paper

VLTI status update: three years into the second generation

Julien Woillez, Pascaline Darré, Sebastien Egner, Frédéric Gonté, Xavier Haubois, Antoine Mérand, Nicolas Schuhler, José Antonio Abad, Roberto Abuter, Emmanuel Aller-Carpentier, Jaime Alonso, Luigi Andolfato, Pablo José Barriga, Juan Beltran, Jean-Philippe Berger, Pierre Bourget, Roland Brast, Paul Bristow, Luis Caniguante, Ralf Conzelmann, Angela Cortes, Alain Delboulbé, Françoise Delplancke-Ströbele, Diego Del Valle, Roderick Dembet, Frédéric Derie, Reinaldo Donoso, Philippe Duhoux, Christophe Dupuy, Andreas Förster, Eloy Fuenteseca, Robert Frahm, Daniel Gaytan, Andreas Glindemann, Jaime Gonzales, Thibaut Guerlet, Sylvain Guieu, Stéphane Guisard, Pablo Gutierrez, Pierre Haguenauer, Andreas Haimerl, Pierre van der Heyden, Stefan Huber, Norbert Hubin, Lieselotte Jochum, Laurent Jocou, Paul Jolley, Jean-Paul Kirchbauer, Johann Kolb, Johan Kosmalski, Peter Krempl, Jean-Baptiste Le Bouquin, Samuel Lévêque, Paul Lilley, Jean Louis Lizon, Yves Magnard, Pedro Mardones, Alexander Meister, Thibaut Moulin, Juan Osorio, Jürgen Ott, Laurent Pallanca, Jérôme Paufique, Marcus Pavez, Luca Pasquini, Isabelle Percheron, Lorenzo Pettazzi, Thanh Phan Duc, Jean Francois Pirard, Andres Pino, Sébastien Poupar, Jutta Quentin, Andres Ramírez, Javier Reyes, Robert Ridings, Sylvain Rochat, Thomas Rivinius, Fernando Salgado, Markus Schöller, Pavel Shchekaturov, Christian Stephan, Marcos Suarez, Richard Tamblay, Mario Tapia, Konrad Tristram, Guillermo Valdes, Christophe Verinaud, Willem-Jan de Wit, Gérard Zins

Proceedings Volume 10701, 1070103 (2018) https://doi.org/10.1117/12.2312042

KEYWORDS: Telescopes, Adaptive optics, Metrology, Interferometers, Stars

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Proceedings Article | 9 July 2018 Paper

NAOMI: the adaptive optics for the auxiliary telescopes of VLTI

Frédéric Gonté, Sebastien Egner, Pierre Haguenauer, Julien Woillez, Emmanuel Aller-Carpentier, Jaime Alonso, Luigi Andolfato, Pierre Bourget, Pascaline Darré, Roderick Dembet, Christophe Dupuy, Pablo Gutierrez, Stefan Huber, Norbert Hubin, Jean-Paul Kirchbauer, Johann Kolb, Johan Kosmalski, Alexander Meister, Luca Pasquini, Javier Reyes, Pavel Shchekaturov, Nicolas Schuhler, Christian Stephan, Guillermo Valdes, Christophe Vérinaud, Jean-Philippe Berger, Jean-Baptiste Le Bouquin, Sylvain Guieu, Alain Delboulbé, Laurent Jocou, Yves Magnard, Thibaut Moulin, Sylvain Rochat, Eric Stadler, Peter Krempl

Proceedings Volume 10701, 107010N (2018) https://doi.org/10.1117/12.2312220

KEYWORDS: Telescopes, Adaptive optics, Real-time computing, Deformable mirrors, Interferometry, Interferometers, Sensors, Mirrors, Wavefronts

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Proceedings Article | 6 July 2018 Paper

Designing and managing software interfaces for the ELT

Gianluca Chiozzi, Luigi Andolfato, Mario Kiekebusch, Nick Kornweibel, Marcus Schilling, Michele Zamparelli

Proceedings Volume 10707, 1070725 (2018) https://doi.org/10.1117/12.2312175

KEYWORDS: Control systems, Interfaces, Systems modeling, Safety, Databases, Data modeling, Telescopes, Mirrors, Process modeling

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Proceedings Article | 8 August 2016 Paper

Prototyping the E-ELT M1 local control system communication infrastructure

J. Argomedo, N. Kornweibel, T. Grudzien, M. Dimmler, L. Andolfato, P. Barriga

Proceedings Volume 9913, 99131N (2016) https://doi.org/10.1117/12.2232817

KEYWORDS: Prototyping, Control systems, Telecommunications, Mirrors, Actuators, Control systems design, Sensors, Electronics, Telecommunications, Switches, Liquid crystals

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Proceedings Article | 4 August 2016 Paper

NAOMI: a low-order adaptive optics system for the VLT interferometer

Frédéric Yves Gonté, Jaime Alonso, Emmanuel Aller-Carpentier, Luigi Andolfato, Jean-Philippe Berger, Angela Cortes, Françoise Delplancke-Strobele, Rob Donaldson, Reinhold Dorn, Christophe Dupuy, Sebastian Egner, Stefan Huber, Norbert Hubin, Jean-Paul Kirchbauer, Miska Le Louarn, Paul Lilley, Paul Jolley, Alessandro Martis, Jérôme Paufique, Luca Pasquini, Jutta Quentin, Robert Ridings, Javier Reyes, Pavel Shchkaturov, Marcos Suarez, Thanh Phan Duc, Guillermo Valdes, Julien Woillez, Jean-Baptiste Le Bouquin, Jean-Luc Beuzit, Sylvain Rochat, Christophe Vérinaud, Thibaut Moulin, Alain Delboulbé, Laurence Michaud, Jean-Jacques Correia, Alain Roux, Didier Maurel, Eric Stadler, Yves Magnard

Proceedings Volume 9907, 990720 (2016) https://doi.org/10.1117/12.2233993

KEYWORDS: Interferometry, Adaptive optics, Telescopes, Mirrors, Astatine, Relays, Actuators, Stars, Real-time computing, Deformable mirrors

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Proceedings Article | 4 August 2016 Paper

VLT interferometer upgrade for the 2nd generation of interferometric instruments

Frederic Gonté, Julien Woillez, Nicolas Schuhler, Sebastian Egner, Antoine Merand, José Antonio Abad, Sergio Abadie, Roberto Abuter, Margarita Acuña, Fatmé Allouche, Jaime Alonso, Luigi Andolfalto, Pierre Antonelli, Gerardo Avila, Pablo José Barriga, Juan Beltran, Jean-Philippe Berger, Carlos Bolados, Henri Bonnet, Pierre Bourget, Roland Brast, Paul Bristow, Luis Caniguante, Roberto Castillo, Ralf Conzelmann, Angela Cortes, Françoise Delplancke, Diego Del Valle, Frederic Derie, Alvaro Diaz, Reinaldo Donoso, Reinhold Dorn, Philippe Duhoux, Christophe Dupuy, Frank Eisenhauer, Christian Elao, Eloy Fuenteseca, Ruben Fernandez, Daniel Gaytan, Andreas Glindemann, Jaime Gonzales, Sylvain Guieu, Stephane Guisard, Pierre Haguenauer, Andreas Haimerl, Volker Heinz, Juan Pablo Henriquez, P. van der Heyden, Norbert Hubin, Rodrigo Huerta, Lieselotte Jochum, Alfredo Leiva, Samuel Lévêque, Jean-Louis Lizon, Fernando Luco, Pedro Mardones, Angel Mellado, Juan Osorio, Jürgen Ott, Laurent Pallanca, Marcus Pavez, Luca Pasquini, Isabelle Percheron, Jean-Francois Pirard, Duc Than Phan, Juan Carlos Pineda, Andres Pino, Sebastien Poupar, Andres Ramírez, Claudio Reinero, Miguel Riquelme, Juan Romero, Thomas Rivinius, Chester Rojas, Felix Rozas, Fernando Salgado, Silvia Scheithauer, Christian Schmid, Markus Schöller, Waldo Siclari, Christian Stephan, Richard Tamblay, Mario Tapia, Konrad Tristram, Guillermo Valdes, Willem-Jan de Wit, Andrew Wright, Gerard Zins

Proceedings Volume 9907, 99071Z (2016) https://doi.org/10.1117/12.2233350

KEYWORDS: Interferometry, Adaptive optics, Telescopes, Interferometers, Stars, Infrared radiation, Interferometry, Astatine, Mirrors, Mid-IR, Sensors

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Proceedings Article | 4 August 2014 Paper

Model based systems engineering for astronomical projects

R. Karban, L. Andolfato, P. Bristow, G. Chiozzi, M. Esselborn, M. Schilling, C. Schmid, H. Sommer, M. Zamparelli

Proceedings Volume 9150, 91500L (2014) https://doi.org/10.1117/12.2055540

KEYWORDS: Systems modeling, Systems engineering, Control systems, Telescopes, Control systems design, Astronomy, Instrument modeling, Interfaces, Wavefronts, Visual process modeling

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Proceedings Article | 24 July 2014 Paper

NAOMI: a new adaptive optics module for interferometry

Emmanuel Aller-Carpentier, Reinhold Dorn, Francoise Delplancke-Stroebele, Jérome Paufique, Luigi Andolfato, Christophe Dupuy, Enrico Fedrigo, Philippe Gitton, Paul Jolley, Paul Lilley, Miska Le Louarn, Than Duc, Andrew Rakich, Javier Reyes, Robert Ridings, Julien Woillez, Enrico Marchetti, Marcos Suarez Valles, Christian Schmid, Norbert Hubin, Jean-Philippe Berger, Jutta Quentin, Bernard-Alexis Delabre, Stewart McLay, Luca Pasquini

Proceedings Volume 9146, 91461C (2014) https://doi.org/10.1117/12.2054730

KEYWORDS: Telescopes, Adaptive optics, Interferometry, Wavefront sensors, Astatine, Stars, Sensors, Mirrors, Cameras, Real-time computing

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Proceedings Article | 24 July 2014 Paper

Improving the astrometric performance of VLTI-PRIMA

J. Woillez, R. Abuter, L. Andolfato, J.-P. Berger, H. Bonnet, F. Delplancke, F. Derie, N. Di Lieto, S. Guniat, A. Mérand, T. Phan Duc, C. Schmid, N. Schuhler, T. Henning, R. Launhardt, F. Pepe, Didier Queloz, A. Quirrenbach, S. Reffert, J. Sahlmann, D. Segransan

Proceedings Volume 9146, 91461H (2014) https://doi.org/10.1117/12.2054723

KEYWORDS: Metrology, Space telescopes, Telescopes, Stars, Sensors, Mirrors, Polarization, Retroreflectors, Signal to noise ratio, Exoplanets

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Proceedings Article | 24 July 2014 Paper

VLTI status update: a decade of operations and beyond

Antoine Mérand, Roberto Abuter, Emmanuel Aller-Carpentier, Luigi Andolfato, Jaime Alonso, Jean-Philippe Berger, Guillaume Blanchard, Henri Boffin, Pierre Bourget, Paul Bristow, Claudia Cid, Willem-Jan de Wit, Diego del Valle, Françoise Delplancke-Ströbele, Frédéric Derie, Lorena Faundez, Steve Ertel, Rebekka Grellmann, Philippe Gitton, Andreas Glindemann, Patricia Guajardo, Sylvain Guieu, Stéphane Guisard, Serge Guniat, Pierre Haguenauer, Cristian Herrera, Christian Hummel, Carlos La Fuente, Marcelo Lopez, Pedro Mardones, Sébastien Morel, André Müller, Isabelle Percheron, Than Phan Duc, Andres Pino, Sébastien Poupar, Eszter Pozna, Andres Ramirez, Srihdaran Rengaswamy, Lionel Rivas, Thomas Rivinius, Alex Segovia, Christian Schmid, Markus Schöller, Nicolas Schuhler, Julien Woillez, Markus Wittkowski

Proceedings Volume 9146, 91460J (2014) https://doi.org/10.1117/12.2057150

KEYWORDS: Telescopes, Astatine, Interferometry, Observatories, Interferometers, Adaptive optics, Space telescopes, Stars, Large telescopes, Calibration

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Proceedings Article | 12 September 2012 Paper

Status of PRIMA for the VLTI: heading to astrometry

C. Schmid, R. Abuter, A. Merand, J. Sahlmann, J. Alonso, L. Andolfato, G. van Belle, F. Delplancke, F. Dérie, N. Di Lieto, R. Frahm, Ph. Gitton, N. Gomes, P. Haguenauer, B. Justen, S. Lévêque, S. Ménardi, S. Morel, A. Müller, T. Phan Duc, Eszter Pozna, A. Ramirez, N. Schuhler, D. Ségransan

Proceedings Volume 8445, 84450F (2012) https://doi.org/10.1117/12.926426

KEYWORDS: Stars, Signal to noise ratio, Telescopes, Wavelet transforms, Sensors, IRIS Consortium, Mirrors, Observatories, Interferometry, Interferometers

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Proceedings Article | 12 September 2012 Paper

The Very Large Telescope Interferometer v2012+

Pierre Haguenauer, Roberto Abuter, Luigi Andolfato, Jaime Alonso, Guillaume Blanchard, Jean-Philippe Berger, Pierre Bourget, Stephane Brillant, Frédéric Derie, Françoise Delplancke, Nicola Di Lieto, Christophe Dupuy, Bruno Gilli, Philippe Gitton, Juan Carlos Gonzalez, Stéphane Guisard, Serge Guniat, Gerhard Hudepohl, Andreas Kaufer, Samuel Lévêque, Serge Ménardi, Antoine Mérand, Sebastien Morel, Isabelle Percheron, Than Phan Duc, Sebastien Poupar, Andres Ramirez, Claudio Reineiro, Sridharan Rengaswamy, Thomas Rivinius, Markus Schöller, Christian Schmid, Alex Segovia, Nicolas Schuhler, Guillermo Valdes, Willem Jan de Wit, Markus Wittkowski

Proceedings Volume 8445, 84450D (2012) https://doi.org/10.1117/12.925323

KEYWORDS: Telescopes, Interferometers, Astatine, Interferometry, Large telescopes, Observatories, Systems engineering, Control systems, Mirrors, Sensors

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Proceedings Article | 22 July 2010 Paper

The very large telescope Interferometer: 2010 edition

Pierre Haguenauer, Jaime Alonso, Pierre Bourget, Stephane Brillant, Philippe Gitton, Stephane Guisard, Sébastien Poupar, Nicolas Schuhler, Roberto Abuter, Luigi Andolfato, Guillaume Blanchard, Jean-Philippe Berger, Angela Cortes, Frédéric Dérie, Françoise Delplancke, Nicola Di Lieto, Christophe Dupuy, Bruno Gilli, Andreas Glindemann, Serge Guniat, Gerhard Huedepohl, Andreas Kaufer, Jean-Baptiste Le Bouquin, Samuel Lévêque, Serge Ménardi, Antoine Mérand, Sebastien Morel, Isabelle Percheron, Than Phan Duc, Andres Pino, Andres Ramirez, Sridharan Rengaswamy, Andrea Richichi, Thomas Rivinius, Johannes Sahlmann, Markus Schoeller, Christian Schmid, Stan Stefl, Guillermo Valdes, Gerard van Belle, Stefan Wehner, Markus Wittkowski

Proceedings Volume 7734, 773404 (2010) https://doi.org/10.1117/12.857070

KEYWORDS: Telescopes, Astatine, Interferometers, Interferometry, Adaptive optics, Large telescopes, Mirrors, Observatories, Statistical analysis, Image quality

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Proceedings Article | 22 July 2010 Paper

Status of PRIMA for the VLTI or the quest for user-friendly fringe tracking

C. Schmid, R. Abuter, S. Ménardi, L. Andolfato, F. Delplancke, F. Derie, N. Di Lieto, R. Frahm, Ph. Gitton, N. Gomes, P. Haguenauer, S. Lévêque, S. Morel, A. Müller, T. Phan Duc, Eszter Pozna, J. Sahlmann, N. Schuhler, G. van Belle

Proceedings Volume 7734, 77340F (2010) https://doi.org/10.1117/12.857419

KEYWORDS: Signal to noise ratio, Stars, Calibration, Sensors, Telescopes, Interferometry, Phase measurement, Signal detection, Mirrors, Observatories

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Proceedings Article | 28 July 2008 Paper

The ESPRI Project: differential delay lines for PRIMA

F. Pepe, Didier Queloz, Th. Henning, A. Quirrenbach, F. Delplancke, L. Andolfato, H. Baumeister, P. Bizenberger, H. Bleuler, B. Chazelas, F. Dérie, L. Di Lieto, T. Duc, O. Duvanel, M. Fleury, D. Gillet, U. Graser, F. Koch, R. Launhardt, C. Maire, D. Mégevand, Y. Michellod, J.-M. Moresmau, P. Müllhaupt, V. Naranjo, L. Sache, Y. Salvadé, G. Simond, D. Sosnowska, K. Wagner, L. Zago

Proceedings Volume 7013, 70130P (2008) https://doi.org/10.1117/12.788169

KEYWORDS: Actuators, Stars, Metrology, Eye, Mirrors, Telescopes, Interferometers, Exoplanets, Interferometry, Planets

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Proceedings Article | 28 July 2008 Paper

The ESPRI project: astrometric exoplanet search with PRIMA

R. Launhardt, Didier Queloz, Th. Henning, A. Quirrenbach, F. Delplancke, L. Andolfato, H. Baumeister, P. Bizenberger, H. Bleuler, B. Chazelas, F. Dérie, L. Di Lieto, T.P. Duc, O. Duvanel, N. Elias, M. Fluery, R. Geisler, D. Gillet, U. Graser, F. Koch, R. Köhler, C. Maire, D. Mégevand, Y. Michellod, J.-M. Moresmau, A. Müller, P. Müllhaupt, V. Naranjo, F. Pepe, S. Reffert, L. Sache, D. Ségransan, Y. Salvadé, T. Schulze-Hartung, J. Setiawan, G. Simond, D. Sosnowska, I. Stilz, B. Tubbs, K. Wagner, L. Weber, P. Weise, L. Zago

Proceedings Volume 7013, 70132I (2008) https://doi.org/10.1117/12.789318

KEYWORDS: Stars, Planets, Exoplanets, Astatine, Telescopes, K band, Interferometry, Software development, Interferometers, Near infrared

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Proceedings Article | 16 July 2008 Paper

Workstation software framework

L. Andolfato, R. Karban

Proceedings Volume 7019, 70191X (2008) https://doi.org/10.1117/12.787385

KEYWORDS: Data modeling, Software development, Software frameworks, Logic, C++, Sensors, Telescopes, Control systems, Composites, Databases

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Proceedings Article | 28 June 2006 Paper

The VLTI auxiliary telescopes: measured performances

B. Koehler, M. Kraus, J. Moresmau, K. Wirenstrand, P. Duhoux, R. Karban, L. Andolfato, F. Gonte

Proceedings Volume 6268, 626841 (2006) https://doi.org/10.1117/12.670639

KEYWORDS: Telescopes, Stars, Mirrors, Image quality, Observatories, Monochromatic aberrations, Interferometers, Interferometry, Astatine, Relays

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Proceedings Article | 27 June 2006 Paper

PRIMA for the VLTI: a status report

Francoise Delplancke, Frédéric Derie, Samuel Lévêque, Serge Ménardi, Roberto Abuter, Luigi Andolfato, Pascal Ballester, Jeroen de Jong, Nicola Di Lieto, Philippe Duhoux, Robert Frahm, Philippe Gitton, Andreas Glindemann, Ralf Palsa, Florence Puech, Johannes Sahlmann, Nicolas Schuhler, Thanh Phan Duc, Bruno Valat, Anders Wallander

Proceedings Volume 6268, 62680U (2006) https://doi.org/10.1117/12.660395

KEYWORDS: Stars, Telescopes, Metrology, Sensors, Mirrors, Actuators, Interferometers, Control systems, Beam splitters, Calibration

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Proceedings Article | 20 October 2004 Paper

VLTI technical advances: present and future

Andreas Glindemann, Maja Albertsen, Luigi Andolfato, Gerardo Avila, Pascal Ballester, Bertrand Bauvir, Francoise Delplancke, Frederic Derie, Martin Dimmler, Philippe Duhoux, Emmanuel di Folco, R. Frahm, Emmanuel Galliano, Bruno Gilli, Paul Giordano, Philippe Gitton, Stephane Guisard, Nico Housen, Christian Hummel, Alexis Huxley, Robert Karban, Pierre Kervella, Mario Kiekebusch, Bertrand Koehler, Samuel Leveque, Tom Licha, Antonio Longinotti, Derek McKay, Serge Menardi, Guy Monnet, Sebastien Morel, Francesco Paresce, Isabelle Percheron, Monika Petr-Gotzens, Thanh Phan Duc, Joerg-Uwe Pott, Florence Puech, Fredrik Rantakyro, Andrea Richichi, Cyrus Sabet, Kevin Scales, Markus Schoeller, N. Schuhler, Mario van den Ancker, Martin Vannier, Anders Wallander, Markus Wittkowski, Rainer Wilhelm

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551468

KEYWORDS: Telescopes, Stars, Interferometry, Sensors, Adaptive optics, Astatine, Observatories, Near infrared, Mid-IR, IRIS Consortium

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