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3. Imaging low-mass planets within the habitable zone of α Centauri

Author

Wagner, Kevin, Boehle, Anna, Pathak, Prashant, Kasper, Markus, Arsenault, Robin, Jakob, Gerd, Käufl, Ulli, Leveratto, Serban, Maire, Anne-Lise, Pantin, Eric, Siebenmorgen, Ralf, Zins, Gerard, Absil, Olivier, Ageorges, Nancy, Apai, Daniel, Carlotti, Alexis, Choquet, Elodie, Delacroix, Christian, Dohlen, Kjetil, Duhoux, Philippe, Forsberg, Pontus, Fuenteseca, Eloy, Gutruf, Sven, Guyon, Oliver, Huby, Elsa, Kampf, Dirk, Karlsson, Mikael, Kervella, Pierre, Kirchbauer, Jean Paul, Klupar, Peter, Kolb, Johann, Mawet, Dimitri, N’Diaye, Mamadou, Orban de Xivry, Gilles, Quanz, Sascha P., Reutlinger, Arnd, Ruane, Garreth, Riquelme, Miguel, Soenke, Christian, Sterzik, Michael Fritz, Vigan, Arthur, de Zeeuw, Tim, Wagner, Kevin, Boehle, Anna, Pathak, Prashant, Kasper, Markus, Arsenault, Robin, Jakob, Gerd, Käufl, Ulli, Leveratto, Serban, Maire, Anne-Lise, Pantin, Eric, Siebenmorgen, Ralf, Zins, Gerard, Absil, Olivier, Ageorges, Nancy, Apai, Daniel, Carlotti, Alexis, Choquet, Elodie, Delacroix, Christian, Dohlen, Kjetil, Duhoux, Philippe, Forsberg, Pontus, Fuenteseca, Eloy, Gutruf, Sven, Guyon, Oliver, Huby, Elsa, Kampf, Dirk, Karlsson, Mikael, Kervella, Pierre, Kirchbauer, Jean Paul, Klupar, Peter, Kolb, Johann, Mawet, Dimitri, N’Diaye, Mamadou, Orban de Xivry, Gilles, Quanz, Sascha P., Reutlinger, Arnd, Ruane, Garreth, Riquelme, Miguel, Soenke, Christian, Sterzik, Michael Fritz, Vigan, Arthur, and de Zeeuw, Tim

Abstract

Giant exoplanets on wide orbits have been directly imaged around young stars. If the thermal background in the mid-infrared can be mitigated, then exoplanets with lower masses can also be imaged. Here we present a ground-based mid-infrared observing approach that enables imaging low-mass temperate exoplanets around nearby stars, and in particular within the closest stellar system, alpha Centauri. Based on 75-80% of the best quality images from 100h of cumulative observations, we demonstrate sensitivity to warm sub-Neptune-sized planets throughout much of the habitable zone of alpha Centauri A. This is an order of magnitude more sensitive than state-of-the-art exoplanet imaging mass detection limits. We also discuss a possible exoplanet or exozodiacal disk detection around alpha Centauri A. However, an instrumental artifact of unknown origin cannot be ruled out. These results demonstrate the feasibility of imaging rocky habitable-zone exoplanets with current and upcoming telescopes. Imaging of low-mass exoplanets can be achieved once the thermal background in the mid-infrared (MIR) wavelengths can be mitigated. Here, the authors present a ground-based MIR observing approach enabling imaging low-mass temperate exoplanets around nearby stars.

Published
2021
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4. Design, pointing control, and on-sky performance of the mid-infrared vortex coronagraph for the VLT/NEAR experiment

Author

Maire, Anne-Lise, primary, Huby, Elsa, additional, Absil, Olivier, additional, Zins, Gérard, additional, Kasper, Markus, additional, Delacroix, Christian, additional, Leveratto, Serban, additional, Karlsson, Mikael, additional, Ruane, Garreth, additional, Käufl, Hans-Ulrich, additional, Orban de Xivry, Gilles, additional, Pathak, Prashant, additional, Pettazzi, Lorenzo, additional, Duhoux, Philippe, additional, Kolb, Johan, additional, Pantin, Éric, additional, Riggs, A. J. Eldorado, additional, Siebenmorgen, Ralf, additional, and Mawet, Dimitri, additional

Published
2020
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5. Design, pointing control, and on-sky performance of the mid-infrared vortex coronagraph for the VLT/NEAR experiment

Author

Maire, Anne-Lise, Huby, Elsa, Absil, Oliver, Zins, Gerard, Kasper, Markus, Delacroix, Christian, Leveratto, Serban, Karlsson, Mikael, Ruane, Garreth, Käufl, Hans-Ulrich, Orban de Xivry, Gilles, Pathak, Prashant, Pettazzi, Lorenzo, Duhoux, Philippe, Kolb, Johan, Pantin, Eric, Riggs, A.J. Eldorado, Siebenmorgen, Ralf, Mawet, Dimitri, Maire, Anne-Lise, Huby, Elsa, Absil, Oliver, Zins, Gerard, Kasper, Markus, Delacroix, Christian, Leveratto, Serban, Karlsson, Mikael, Ruane, Garreth, Käufl, Hans-Ulrich, Orban de Xivry, Gilles, Pathak, Prashant, Pettazzi, Lorenzo, Duhoux, Philippe, Kolb, Johan, Pantin, Eric, Riggs, A.J. Eldorado, Siebenmorgen, Ralf, and Mawet, Dimitri

Published
2020
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6. NEAR: First Results from the Search for Low-Mass Planets in α Cen

Author

Kasper, Markus, Arsenault, Robin, Käufl, Ulli, Jakob, Gerd, Leveratto, Serban, Zins, Gerard, Pantin, Eric, Duhoux, Philippe, Riquelme, Miguel, Kirchbauer, Jean-Paul, Kolb, Johann, Pathak, Prashant, Siebenmorgen, Ralf, Soenke, Christian, Fuenteseca, Eloy, Sterzik, Michael, Ageorges, Nancy, Gutruf, Sven, Kampf, Dirk, Reutlinger, Arnd, Absil, Olivier, Delacroix, Christian, Maire, Anne-Lise, Huby, Elsa, Guyon, Olivier, Klupar, Pete, Mawet, Dimitri, Ruane, Garreth, Karlsson, Mikael, Dohlen, Kjetil, Vigan, Arthur, N’Diaye, Mamadou, Quanz, Sascha, Carlotti, Alexis, Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS]Physics [physics], 0303 health sciences, 03 medical and health sciences, [SDU]Sciences of the Universe [physics], 0103 physical sciences, Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, 010303 astronomy & astrophysics, 01 natural sciences, Astrophysics::Galaxy Astrophysics, 030304 developmental biology
Abstract

ESO, in collaboration with the Breakthrough Initiatives, has modified the VLT mid-infrared imager VISIR to greatly enhance its ability as a planet finder. It has conducted a 100-hour observing campaign to search for low-mass planets around both components of the binary a Centauri, part of the closest stellar system to the Earth. Using adaptive optics and high-performance coronagraphy, the instrument reached unprecedented contrast and sensitivity allowing it to see Neptune-sized planets in the habitable zone, if present. The experiment allowed us to characterise the current limitations of the instrument. We conclude that the detection of rocky planets similar to Earth in the habitable zone of the a Centauri System is already possible with 8-metre-class telescopes in the thermal infrared., Published in The Messenger vol. 178, pp. 5-9, December 2019.

Published
2019
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7. VLTI status update: three years into the second generation

Author

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

Published
2018
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8. Control software for the AO modules of the AOF project

Author

Kiekebusch, Mario J., primary, Argomedo, Javier, primary, Zins, Gérard, primary, Baksai, Pedro, primary, Duhoux, Philippe, primary, Urrutia, Josefina, primary, Stroebele, Stefan, primary, Soenke, Christian, primary, La Penna, Paolo, primary, Paufique, Jérôme, primary, Kolb, Johann, primary, Madec, Pierre-Yves, primary, Comin, Mauro, primary, Calderone, Giorgio, primary, Arsenault, Robin, primary, and Oberti, Sylvain, primary

Published
2018
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9. VISIR Upgrade: all’s well that ends well

Author

Kerber, Florian, Käufl, Hans Ulrich, Tristram, Konrad, Asmus, Daniel, Baksai, Pedro, Di Lieto, Nicola, Dobrzycka, Danuta, Duhoux, Philippe, Finger, Gert, Hummel, Christian, Ives, Derek, Jakob, Gerd, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Moreau, Vincent, Pantin, Eric, Riquelme, Miguel, Sanchez, Joel, Sandrock, Stefan, Siebenmorgen, Ralf, Stegmaier, Jörg, Smette, Alain, Taylor, Julian, van den Acker, Mario, Valdes, Guillermo, Venema, Lars, Evans, Christopher J., Simard, Luc, and Takami, Hideki

Abstract

We present an overview of the VISIR instrument after its upgrade and return to science operations. VISIR is the midinfrared imager and spectrograph at ESO’s VLT. The project team is comprised of ESO staff and members of the original VISIR consortium: CEA Saclay and ASTRON. The project plan was based on input from the ESO user community with the goal of enhancing the scientific performance and efficiency of VISIR by a combination of measures: installation of improved hardware, optimization of instrument operations and software support. The cornerstone of the upgrade is the 1k by 1k Si:As AQUARIUS detector array manufactured by Raytheon. In addition, a new prism spectroscopic mode covers the whole N-band in a single observation. Finally, new scientific capabilities for high resolution and high-contrast imaging are offered by sub-aperture mask and coronagraphic modes. In order to make optimal use of favourable atmospheric conditions, a water vapour monitor has been deployed on Paranal, allowing for real-time decisions and the introduction of a user-defined constraint on water vapour. During the commissioning in 2012, it was found that the on-sky sensitivity of the AQUARIUS detector was significantly below expectations. Extensive testing of the detector arrays in the laboratory and on-sky enabled us to diagnose the cause for the shortcoming of the detector as excess low frequency noise. It is inherent to the design chosen for this detector and cannot be remedied by changing the detector set-up. Since this is a form of correlated noise, its impact can be limited by modulating the scene recorded by the detector. After careful analysis, we have implemented fast (up to 4 Hz) chopping with field stabilization using the secondary mirror of the VLT. During commissioning, the upgraded VISIR has been confirmed to be more sensitive than the old instrument, and in particular for low-resolution spectroscopy in the N-band, a gain of a factor 6 is realized in observing efficiency. After overcoming several additional technical problems, VISIR is back in Science Operations since April 2015. In addition an upgrade of the IT infrastructure related to VISIR has been conducted in order to support burst-mode operations. Science Verification of the new modes was performed in Feb 2016. The upgraded VISIR is a powerful instrument providing close to background limited performance for diffraction-limited observations at an 8-m telescope. It offers synergies with facilities such as ALMA, JWST, VLTI and SOFIA, while a wealth of targets is available from survey works like WISE. In addition, it will bring confirmation of the technical readiness and scientific value of several aspects for future mid-IR instrumentation at Extremely Large Telescopes. We also present several lessons learned during the project.

Published
2016

10. AOF – first on-sky performance of the GALACSI GLAO mode (or how to close 10 loops in less than 5 minutes)

Author

Kolb, Johann, primary, Madec, Pierre-Yves, additional, Arsenault, Robin, additional, Oberti, Sylvain, additional, Paufique, Jerome, additional, La Penna, Paolo, additional, Ströbele, Stefan, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Suárez Valles, Marcos, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Le Louarn, Miska, additional, Vernet, Elise, additional, Haguenauer, Pierre, additional, Duhoux, Philippe, additional, Aller-Carpentier, Emmanuel, additional, Valenzuela, Jose Javier, additional, and Guerra, Juan Carlos, additional

Published
2017
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11. Re-commissioning of the VLT/UT4 telescope after the Deformable Secondary Mirror installation

Author

Hibon, Pascale, primary, Hammersley, Peter, additional, Selman, Fernando, additional, Hau, George, additional, Duhoux, Philippe, additional, Agnello, Adriano, additional, Arranda, Ivan, additional, Arsenault, Robin, additional, Blanchard, Israel, additional, Cerda, Susana, additional, Egner, Sebastian, additional, Johnston, Evelyn, additional, Parraguez, Diego, additional, Reyes, Claudia, additional, and Vernet, Elise, additional

Published
2017
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12. VISIR Upgrade: all’s well that ends well

Author

Evans, Christopher J., Simard, Luc, Takami, Hideki, Kerber, Florian, Käufl, Hans Ulrich, Tristram, Konrad, Asmus, Daniel, Baksai, Pedro, Di Lieto, Nicola, Dobrzycka, Danuta, Duhoux, Philippe, Finger, Gert, Hummel, Christian, Ives, Derek, Jakob, Gerd, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Moreau, Vincent, Pantin, Eric, Riquelme, Miguel, Sanchez, Joel, Sandrock, Stefan, Siebenmorgen, Ralf, Stegmaier, Jörg, Smette, Alain, Taylor, Julian, van den Acker, Mario, Valdes, Guillermo, Venema, Lars, Evans, Christopher J., Simard, Luc, Takami, Hideki, Kerber, Florian, Käufl, Hans Ulrich, Tristram, Konrad, Asmus, Daniel, Baksai, Pedro, Di Lieto, Nicola, Dobrzycka, Danuta, Duhoux, Philippe, Finger, Gert, Hummel, Christian, Ives, Derek, Jakob, Gerd, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Moreau, Vincent, Pantin, Eric, Riquelme, Miguel, Sanchez, Joel, Sandrock, Stefan, Siebenmorgen, Ralf, Stegmaier, Jörg, Smette, Alain, Taylor, Julian, van den Acker, Mario, Valdes, Guillermo, and Venema, Lars

Abstract

We present an overview of the VISIR instrument after its upgrade and return to science operations. VISIR is the midinfrared imager and spectrograph at ESO’s VLT. The project team is comprised of ESO staff and members of the original VISIR consortium: CEA Saclay and ASTRON. The project plan was based on input from the ESO user community with the goal of enhancing the scientific performance and efficiency of VISIR by a combination of measures: installation of improved hardware, optimization of instrument operations and software support. The cornerstone of the upgrade is the 1k by 1k Si:As AQUARIUS detector array manufactured by Raytheon. In addition, a new prism spectroscopic mode covers the whole N-band in a single observation. Finally, new scientific capabilities for high resolution and high-contrast imaging are offered by sub-aperture mask and coronagraphic modes. In order to make optimal use of favourable atmospheric conditions, a water vapour monitor has been deployed on Paranal, allowing for real-time decisions and the introduction of a user-defined constraint on water vapour. During the commissioning in 2012, it was found that the on-sky sensitivity of the AQUARIUS detector was significantly below expectations. Extensive testing of the detector arrays in the laboratory and on-sky enabled us to diagnose the cause for the shortcoming of the detector as excess low frequency noise. It is inherent to the design chosen for this detector and cannot be remedied by changing the detector set-up. Since this is a form of correlated noise, its impact can be limited by modulating the scene recorded by the detector. After careful analysis, we have implemented fast (up to 4 Hz) chopping with field stabilization using the secondary mirror of the VLT. During commissioning, the upgraded VISIR has been confirmed to be more sensitive than the old instrument, and in particular for low-resolution spectroscopy in the N-band, a gain of a factor 6 is realized in observing efficiency. Af

Published
2016

13. VLT interferometer upgrade for the 2nd generation of interferometric instruments

Author

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

Published
2016
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14. VISIR upgrade overview: all's well that ends well

Author

Kerber, Florian, additional, Käufl, Hans Ulrich, additional, Tristram, Konrad, additional, Asmus, Daniel, additional, Baksai, Pedro, additional, Di Lieto, Nicola, additional, Dobrzycka, Danuta, additional, Duhoux, Philippe, additional, Finger, Gert, additional, Hummel, Christian, additional, Ives, Derek, additional, Jakob, Gerd, additional, Lundin, Lars, additional, Mawet, Dimitri, additional, Mehrgan, Leander, additional, Pantin, Eric, additional, Riquelme, Miguel, additional, Sanchez, Joel, additional, Sandrock, Stefan, additional, Siebenmorgen, Ralf, additional, Stegmeier, Jörg, additional, Smette, Alain, additional, Taylor, Julian, additional, van den Ancker, Mario, additional, Valdes, Guillermo, additional, and Venema, Lars, additional

Published
2016
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15. Performance updates of HAWK-I and preparation for the commissioning of the system GRAAL+HAWK-I

Author

Hibon, Pascale, additional, Paufique, Jerome, additional, Kuntschner, Harald, additional, Dobrzycka, Danuta, additional, Le Louarn, Miska, additional, Valenti, Elena, additional, Neeser, Mark, additional, Pompei, Emanuela, additional, Arsenault, Robin, additional, Siebenmorgen, Ralf, additional, Madec, Pierre-Yves, additional, Petr-Gotzens, Monika, additional, La Fuente, Carlos, additional, Urrutia, Josefina, additional, Valenzuela, Javier, additional, Castillo, Roberto, additional, Baksai, Pedro, additional, Garcia Dabo, Cesar Enrique, additional, Jost, Andreas, additional, Argomedo, Javier, additional, Kolb, Johann, additional, Kiekebusch, Mario, additional, Hubin, Norbert, additional, Duhoux, Philippe, additional, Conzelmann, Ralf Dieter, additional, Donaldson, Robert, additional, Tordo, Sebastien, additional, and Huber, Stefan, additional

Published
2016
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16. Laboratory results of the AOF system testing

Author

Kolb, Johann, additional, Madec, Pierre-Yves, additional, Arsenault, Robin, additional, Oberti, Sylvain, additional, Paufique, Jérôme, additional, La Penna, Paolo, additional, Ströbele, Stefan, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Suárez Valles, Marcos, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Le Louarn, Miska, additional, Vernet, Elise, additional, Haguenauer, Pierre, additional, Duhoux, Philippe, additional, Aller-Carpentier, Emmanuel, additional, Valenzuela, Jose Javier, additional, and Guerra, Juan Carlos, additional

Published
2016
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17. VISIR upgrade overview and status

Author

Kerber, Florian, additional, Käufl, Hans-Ulrich, additional, Baksai, Pedro, additional, Di Lieto, Nicola, additional, Dobrzycka, Danuta, additional, Duhoux, Philippe, additional, Finger, Gert, additional, Heikamp, Stephanie, additional, Ives, Derek, additional, Jakob, Gerd, additional, Lundin, Lars, additional, Mawet, Dimitri, additional, Mehrgan, Leander, additional, Momany, Yazan, additional, Moreau, Vincent, additional, Pantin, Eric, additional, Riquelme, Miguel, additional, Sandrock, Stefan, additional, Siebenmorgen, Ralf, additional, Smette, Alain, additional, Taylor, Julian, additional, van den Ancker, Mario, additional, Valdes, Guillermo, additional, Venema, Lars, additional, and Weilenmann, Ueli, additional

Published
2014
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18. ESO adaptive optics facility progress and first laboratory test results

Author

Arsenault, Robin, additional, Madec, Pierre-Yves, additional, Paufique, Jérome, additional, La Penna, Paolo, additional, Stroebele, Stefan, additional, Vernet, Elise, additional, Pirard, Jean-Francois, additional, Hackenberg, Wolfgang, additional, Kuntschner, Harald, additional, Kolb, Johann, additional, Muller, Nicolas, additional, Garcia-Rissmann, Aurea, additional, Le Louarn, Miska, additional, Amico, Paola, additional, Hubin, Norbert, additional, Lizon, Jean-Louis, additional, Ridings, Rob, additional, Haguenauer, Pierre, additional, Abad, Jose A., additional, Fischer, Gerhard, additional, Heinz, Volker, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Conzelmann, Ralf, additional, Tordo, Sebastien, additional, Donaldson, Rob, additional, Soenke, Christian, additional, Duhoux, Philippe, additional, Fedrigo, Enrico, additional, Delabre, Bernard, additional, Jost, Andrea, additional, Duchateau, Michel, additional, Downing, Mark, additional, Reyes Moreno, Javier, additional, Manescau, Antonio, additional, Bonaccini Calia, Domenico, additional, Quattri, Marco, additional, Dupuy, Christophe, additional, Guidolin, Ivan M., additional, Comin, Mauro, additional, Guzman, Ronald, additional, Buzzoni, Bernard, additional, Quentin, Jutta, additional, Lewis, Steffan, additional, Jolley, Paul, additional, Kraus, Max, additional, Pfrommer, Thomas, additional, Biasi, Roberto, additional, Gallieni, Daniele, additional, Stuik, Remko, additional, Kaenders, Wilhelm, additional, Ernstberger, Bernhard, additional, and Friedenauer, Axel, additional

Published
2014
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19. ESO adaptive optics facility progress report

Author

Arsenault, Robin, primary, Madec, Pierre-Yves, additional, Paufique, Jerome, additional, La Penna, Paolo, additional, Stroebele, Stefan, additional, Vernet, Elise, additional, Pirard, Jean-Francois, additional, Hackenberg, Wolfgang, additional, Kuntschner, Harald, additional, Jochum, Lieselotte, additional, Kolb, Johann, additional, Muller, Nicolas, additional, Le Louarn, Miska, additional, Amico, Paola, additional, Hubin, Norbert, additional, Lizon, Jean-Louis, additional, Ridings, Rob, additional, Abad, Jose A., additional, Fischer, Gert, additional, Heinz, Volker, additional, Kiekebusch, Mario, additional, Argomedo, Javier, additional, Conzelmann, Ralf, additional, Tordo, Sebastien, additional, Donaldson, Robert, additional, Soenke, Christian, additional, Duhoux, Philippe, additional, Fedrigo, Enrico, additional, Delabre, Bernard, additional, Jost, Andreas, additional, Duchateau, Michel, additional, Downing, Mark, additional, Moreno, Javier R., additional, Dorn, Reinhold, additional, Manescau, Antonio, additional, Bonaccini Calia, Domenico, additional, Quattri, Marco, additional, Dupuy, Christophe, additional, Guidolin, Ivan M., additional, Comin, Mauro, additional, Guzman, Ronald, additional, Buzzoni, Bernard, additional, Quentin, Jutta, additional, Lewis, Steffan, additional, Jolley, Paul, additional, Kraus, Maximilian, additional, Pfrommer, Thomas, additional, Biasi, Roberto, additional, Gallieni, Daniele, additional, Bechet, Clementine, additional, and Stuik, Remko, additional

Published
2012
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20. PRIMA for the VLTI: a status report

Author

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

Published
2006
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21. The VLTI -- A Status Report

Author

Glindemann, Andreas, primary, Algomedo, J., additional, Amestica, Rodrigo, additional, Ballester, Pascal, additional, Bauvir, Bertrand, additional, Bugueno, E., additional, Correia, Serge, additional, Delgado, Francisco, additional, Delplancke, Francoise, additional, Derie, Frederic, additional, Duhoux, Philippe, additional, di Folco, Emmanuel, additional, Gennai, Alberto, additional, Gilli, Bruno, additional, Giordano, Paul, additional, Gitton, Philippe B., additional, Guisard, Stephane, additional, Housen, Nico, additional, Huxley, Alexis, additional, Kervella, Pierre, additional, Kiekebusch, Mario, additional, Koehler, Bertrand, additional, Leveque, Samuel A., additional, Longinotti, Antonio, additional, Morel, Sebastien, additional, Paresce, Francesco, additional, Duc, Than P., additional, Richichi, Andrea, additional, Schoeller, Markus, additional, Tarenghi, Massimo, additional, Wallander, Anders, additional, Wittkowski, Markus, additional, Wilhelm, Rainer, additional, and Menardi, S., additional

Published
2003
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22. Commissioning the VLT interferometer: from first fringes toward a general user facility

Author

Schoeller, Markus, primary, Gitton, Philippe B., additional, Argomedo, Javier, additional, Ballester, Pascal, additional, Bauvir, Bertrand, additional, Van Boekel, Roy, additional, Cantzler, Michael, additional, Correia, Serge, additional, Cotton, William D., additional, Delplancke, Francoise, additional, Derie, Frederic, additional, Duhoux, Philippe, additional, Erm, Toomas, additional, di Folco, Emmanuel, additional, Coude du Foresto, Vincent, additional, Gennai, Alberto, additional, Gilli, Bruno, additional, Giordano, Paul, additional, Glindemann, Andreas, additional, Guisard, Stephane, additional, Gutierrez, Pablo, additional, Housen, Nico, additional, Huedepohl, Gerhard, additional, Huxley, Alexis, additional, Jackisch, S., additional, Jaffe, Walter, additional, Kervella, Pierre, additional, van Kesteren, Arno, additional, Kiekebusch, Mario, additional, Koehler, Bertrand, additional, Leveque, Samuel A., additional, Longinotti, Antonio, additional, Menardi, Serge, additional, Morel, Sebastien, additional, Noethe, Lothar, additional, Paresce, Francesco, additional, Percheron, Isabelle, additional, Phan Duc, T., additional, Pino, A., additional, Rabeling, D., additional, Ramirez, A., additional, Robbe-Dubois, Sylvie, additional, Richichi, Andrea, additional, Rijo, A., additional, Sabet, Cyrus, additional, Sandrock, Stefan, additional, Segransan, Damien, additional, Spyromilio, Jason, additional, Tamai, Roberto, additional, Tarenghi, Massimo, additional, Wallander, Anders, additional, Wilhelm, Rainer, additional, and Wittkowski, Markus, additional

Published
2003
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23. Status of VLTI control system: how to make an optical interferometer a data producing facility

Author

Wallander, Anders, primary, Argomedo, Javier, additional, Ballester, Pascal, additional, Bauvir, Bertrand, additional, Comin, Mauro, additional, Donaldson, Rob, additional, Duhoux, Philippe, additional, Gennai, Alberto, additional, Gilli, Bruno, additional, Housen, Nico, additional, Huxley, Alexis, additional, Karban, Robert, additional, Kiekebush, Mario, additional, Longinotti, Antonio, additional, Munoz, Ivan M., additional, and Duc, Than Phan, additional

Published
2002
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24. VLTI technical advances: present and future.

Author

Glindemann, Andreas, Albertsen, Maja, Andolfato, Luigi, Avila, Gerardo, Ballester, Pascal, Bauvir, Bertrand, Delplancke, Francoise, Derie, Frederic, Dimmler, Martin, Duhoux, Philippe, di Folco, Emmanuel, Frahm, R., Galliano, Emmanuel, Gilli, Bruno, Giordano, Paul N., Gitton, Philippe B., Guisard, Stephane, Housen, Nico, Hummel, Christian A., and Huxley, Alexis

Published
2004
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27. The VLTI -- A Status Report.

Author

Glindemann, Andreas, Algomedo, J., Amestica, Rodrigo, Ballester, Pascal, Bauvir, Bertrand, Bugueno, E., Correia, Serge, Delgado, Francisco, Delplancke, Francoise, Derie, Frederic, Duhoux, Philippe, di Folco, Emmanuel, Gennai, Alberto, Gilli, Bruno, Giordano, Paul, Gitton, Philippe B., Guisard, Stephane, Housen, Nico, Huxley, Alexis, and Kervella, Pierre

Published
2003
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29. Performance updates of HAWK-I and preparation for the commissioning of the system GRAAL+HAWK-I

Author

Evans, Christopher J., Simard, Luc, Takami, Hideki, Hibon, Pascale, Paufique, Jerome, Kuntschner, Harald, Dobrzycka, Danuta, Le Louarn, Miska, Valenti, Elena, Neeser, Mark, Pompei, Emanuela, Arsenault, Robin, Siebenmorgen, Ralf, Madec, Pierre-Yves, Petr-Gotzens, Monika, La Fuente, Carlos, Urrutia, Josefina, Valenzuela, Javier, Castillo, Roberto, Baksai, Pedro, Garcia Dabo, Cesar Enrique, Jost, Andreas, Argomedo, Javier, Kolb, Johann, Kiekebusch, Mario, Hubin, Norbert, Duhoux, Philippe, Conzelmann, Ralf Dieter, Donaldson, Robert, Tordo, Sebastien, and Huber, Stefan

Published
2016
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30. VISIR upgrade overview: all's well that ends well

Author

Evans, Christopher J., Simard, Luc, Takami, Hideki, Kerber, Florian, Käufl, Hans Ulrich, Tristram, Konrad, Asmus, Daniel, Baksai, Pedro, Di Lieto, Nicola, Dobrzycka, Danuta, Duhoux, Philippe, Finger, Gert, Hummel, Christian, Ives, Derek, Jakob, Gerd, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Pantin, Eric, Riquelme, Miguel, Sanchez, Joel, Sandrock, Stefan, Siebenmorgen, Ralf, Stegmeier, Jörg, Smette, Alain, Taylor, Julian, van den Ancker, Mario, Valdes, Guillermo, and Venema, Lars

Published
2016
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31. VLT interferometer upgrade for the 2nd generation of interferometric instruments

Author

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

Published
2016
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32. Laboratory results of the AOF system testing

Author

Marchetti, Enrico, Close, Laird M., Véran, Jean-Pierre, Kolb, Johann, Madec, Pierre-Yves, Arsenault, Robin, Oberti, Sylvain, Paufique, Jérôme, La Penna, Paolo, Ströbele, Stefan, Donaldson, Robert, Soenke, Christian, Suárez Valles, Marcos, Kiekebusch, Mario, Argomedo, Javier, Le Louarn, Miska, Vernet, Elise, Haguenauer, Pierre, Duhoux, Philippe, Aller-Carpentier, Emmanuel, Valenzuela, Jose Javier, and Guerra, Juan Carlos

Published
2016
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36. VISIR upgrade overview and status

Author

Ramsay, Suzanne K., McLean, Ian S., Takami, Hideki, Kerber, Florian, Käufl, Hans-Ulrich, Baksai, Pedro, Di Lieto, Nicola, Dobrzycka, Danuta, Duhoux, Philippe, Finger, Gert, Heikamp, Stephanie, Ives, Derek, Jakob, Gerd, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Momany, Yazan, Moreau, Vincent, Pantin, Eric, Riquelme, Miguel, Sandrock, Stefan, Siebenmorgen, Ralf, Smette, Alain, Taylor, Julian, van den Ancker, Mario, Valdes, Guillermo, Venema, Lars, and Weilenmann, Ueli

Published
2014
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37. On-sky Testing of the Active Phasing Experiment

Author

Gonté, Frédéric, Araujo, Constanza, Bourtembourg, Reynald, Brast, Roland, Derie, Frédéric, Duhoux, Philippe, Dupuy, Christophe, Frank, Christophe, Karban, Robert, Mazzoleni, Ruben, Noethe, Lothar, Sedghi, Babak, Surdej, Isabelle, Yaitskova, Natalia, Luong, Bruno, Chueca, Sergio, Reyes, Marcos, Esposito, Simone, Pinna, Enrico, Puglisi, Alfio, Quiros Pacheco, Fernando, Dohlen, Kjetil, Arthur Vigan, European Southern Observatory (ESO), FOGALE Nanotech, Fogale nanotech, Instituto de Astrofisica de Canarias (IAC), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph]
Abstract

International audience; The Active Phasing Experiment (APE) has been used by ESO to gain experience in controlling segmented primary mirrors in preparation for the European Extremely Large Telescope. The experiment tested various phasing techniques and explored their advantages and limitations. Four optical phasing sensors were developed using different techniques — a curvature sensor, a pyramid sensor, a Shack-Hartmann sensor and a sensor based on a modified Mach-Zehnder interferometer. The design of the APE instrument is described. APE was installed at the VLT visitor focus for on-sky testing and a brief summary of the results of the experiment is given.

38. VLTI status update: three years into the second generation

Author

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

Published
2018
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39. ESO adaptive optics facility progress and first laboratory test results

Author

Marchetti, Enrico, Close, Laird M., Véran, Jean-Pierre, Arsenault, Robin, Madec, Pierre-Yves, Paufique, Jérome, La Penna, Paolo, Stroebele, Stefan, Vernet, Elise, Pirard, Jean-Francois, Hackenberg, Wolfgang, Kuntschner, Harald, Kolb, Johann, Muller, Nicolas, Garcia-Rissmann, Aurea, Le Louarn, Miska, Amico, Paola, Hubin, Norbert, Lizon, Jean-Louis, Ridings, Rob, Haguenauer, Pierre, Abad, Jose A., Fischer, Gerhard, Heinz, Volker, Kiekebusch, Mario, Argomedo, Javier, Conzelmann, Ralf, Tordo, Sebastien, Donaldson, Rob, Soenke, Christian, Duhoux, Philippe, Fedrigo, Enrico, Delabre, Bernard, Jost, Andrea, Duchateau, Michel, Downing, Mark, Reyes Moreno, Javier, Manescau, Antonio, Bonaccini Calia, Domenico, Quattri, Marco, Dupuy, Christophe, Guidolin, Ivan M., Comin, Mauro, Guzman, Ronald, Buzzoni, Bernard, Quentin, Jutta, Lewis, Steffan, Jolley, Paul, Kraus, Max, Pfrommer, Thomas, Biasi, Roberto, Gallieni, Daniele, Stuik, Remko, Kaenders, Wilhelm, Ernstberger, Bernhard, and Friedenauer, Axel

Published
2014
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