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1. 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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2. 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

3. 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

4. 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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5. 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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6. 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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7. MUSE instrument software

Author

Zins, Gérard, additional, Pécontal, Arlette, additional, Larrieu, Marie, additional, Girard, Nathalie, additional, Jarno, Aurélien, additional, Cumani, Claudio, additional, Baksai, Pedro, additional, Comin, Mauro, additional, Kiekebusch, Mario, additional, Knudstrup, Jens, additional, Popovic, Dan, additional, Bacon, Roland, additional, Richard, Johan, additional, Stuik, Remko, additional, and Vernet, Joel, additional

Published
2014
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8. VISIR Upgrade Overview and Status

Author

McLean, Ian S., Ramsay, Suzanne K., Takami, Hideki, Kerber, Florian, Käufl, Hans Ulrich, Baksai, Pedro, Dobrzycka, Danuta, Finger, Gert, Ives, Derek, Jakob, Gerd, Lagadec, Eric, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Moerchen, Margaret, Momany, Yazan, Moreau, Vincent, Pantin, Eric, Riquelme, Miguel, Siebenmorgen, Ralf, Silber, Armin, Smette, Alain, Taylor, Julian, van den Ancker, Mario, Venema, Lars, Weilenmann, Ueli, Yegorova, Irina, McLean, Ian S., Ramsay, Suzanne K., Takami, Hideki, Kerber, Florian, Käufl, Hans Ulrich, Baksai, Pedro, Dobrzycka, Danuta, Finger, Gert, Ives, Derek, Jakob, Gerd, Lagadec, Eric, Lundin, Lars, Mawet, Dimitri, Mehrgan, Leander, Moerchen, Margaret, Momany, Yazan, Moreau, Vincent, Pantin, Eric, Riquelme, Miguel, Siebenmorgen, Ralf, Silber, Armin, Smette, Alain, Taylor, Julian, van den Ancker, Mario, Venema, Lars, Weilenmann, Ueli, and Yegorova, Irina

Abstract

We present an overview of the VISIR upgrade project. VISIR is the mid-infrared 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 is 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 (Raytheon) which has demonstrated very good performance (sensitivity, stability) in the laboratory IR detector test facility (modified TIMMI 2 instrument). A prism spectroscopic mode will cover the N-band in a single observation. New scientific capabilities for high resolution and high-contrast imaging will be offered by sub-aperture mask (SAM) and phase-mask coronagraphic (4QPM/AGPM) 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 userdefined constraint on water vapour. Improved pipelines based on the ESO Reflex concept will provide better support to astronomers. The upgraded VISIR will be a powerful instrument providing background limited performance for diffraction-limited observations at an 8-m telescope. It will offer synergy with facilities such as ALMA, JWST, VLTI and SOFIA, while a wealth of targets is available from survey work (e.g. VISTA, WISE). In addition it will bring confirmation of the technical readiness and scientific value of several aspects of potential mid-IR instrumentation at Extremely Large Telescopes. The intervention on VISIR and installation of hardware has been completed in July and commissioning will take place during July and August. VISIR is scheduled to be available to the users starting Oct 2012.

Published
2012

9. VISIR upgrade overview and status

Author

Kerber, Florian, primary, Käufl, Hans Ulrich, additional, Baksai, Pedro, additional, Dobrzycka, Danuta, additional, Finger, Gert, additional, Ives, Derek, additional, Jakob, Gerd, additional, Lagadec, Eric, additional, Lundin, Lars, additional, Mawet, Dimitri, additional, Mehrgan, Leander, additional, Moerchen, Margaret, additional, Momany, Yazan, additional, Moreau, Vincent, additional, Pantin, Eric, additional, Riquelme, Miguel, additional, Siebenmorgen, Ralf, additional, Silber, Armin, additional, Smette, Alain, additional, Taylor, Julian, additional, van den Ancker, Mario, additional, Venema, Lars, additional, Weilenmann, Ueli, additional, and Yegorova, Irina, additional

Published
2012
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11. 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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12. 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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13. 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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15. MUSE instrument software

Author

Chiozzi, Gianluca, Radziwill, Nicole M., Zins, Gérard, Pécontal, Arlette, Larrieu, Marie, Girard, Nathalie, Jarno, Aurélien, Cumani, Claudio, Baksai, Pedro, Comin, Mauro, Kiekebusch, Mario, Knudstrup, Jens, Popovic, Dan, Bacon, Roland, Richard, Johan, Stuik, Remko, and Vernet, Joel

Published
2014
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