Dr. Sébastien Morel Profile

Dr. Sébastien Morel

at Observatoire de la Côte d'Azur

SPIE Involvement:

Author

Publications (44)

Proceedings Article | 9 July 2018 Paper

Paper

MATISSE: performance in laboratory, results of AIV in Paranal, and first results on sky

S. Robbe-Dubois, S. Lagarde, P. Antonelli, B. Lopez, F. Allouche, C. Bailet, Ph. Berio, Y. Bresson, J.-M. Clausse, P. Cruzalèbes, Y. Fantei-Caujolle, A. Marcotto, A. Matter, A. Meilland, F. Millour, S. Morel, R. Petrov, S. Rousseau, A. Soulain, G. Zins, M. Lehmitz, W. Laun, T. Adler, R. Klein, T. Maurer, F. Bettonvil, E. Eldswick, U. Beckmann, M. Heininger, P. Bristow, A. Glindemann, N. Hubin, L. Jochum, Th. Rivinus, M. Schoeller, J. Beltran, P. Bourget, A. Gallenne, Th. Guerlet, X. Haubois, D. Ives, G. Jakob, A. Meister, M. Riquelme, N. Schuhler, C. Stephan, P. Toledo, K. Tristam, J. Woillez, U. Neumann, A. Chelli, F. Guitton, K. Meisenheimer, B. Pichon, A. Spang, J. Varga, Th. Henning, W. Jaffe, L. Pasquini, Ph. Stee, G. Weigelt

Proceedings Volume 10701, 107010H (2018) https://doi.org/10.1117/12.2313270

KEYWORDS: L band, Photovoltaics, Spectral resolution, Visibility, Sensors, Interferometry, Astatine, Spatial filters, Telescopes, Calibration

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MATISSE (Multi AperTure mid-Infrared SpectroScopic Experiment) is the spectro-interferometer for the VLTI of the European Southern Observatory (ESO), operating in the L-, M- and N- spectral bands, and combining up to four beams from the unit or the auxiliary telescopes (UTs or ATs). MATISSE will offer new breakthroughs in the study of circumstellar environments by allowing the mapping of the material distribution, the gas and essentially the dust. The instrument consists in a warm optical system (WOP) accepting four beams from the VLTI and relaying them after a spectral splitting to cold optical benches (COB) located in two separate cryostats, one in L-M- band, and one in N-band. The test plan of the complete instrument has been conducted at the Observatoire de la Côte d’Azur in order to confirm the compliance of the performance with the high-level requirements. MATISSE has successfully passed the Preliminary Acceptance in Europe the 12th September 2017. Following this result, ESO gave approval for the instrument to be shipped to Paranal. The Alignment, Integration and Verification phase was conducted until end of February 2018, at the end of which first observations on sky have been performed to test the operations with the VLTI and to obtain first stellar light. The two first runs of the commissioning followed, respectively in March and in May 2018. It has the goal to optimize the MATISSE-VLTI communication, the acquisition procedures and the interface parameters. The observations were performed on bright L-M- and N- stars, with four ATs located on short baselines and UTs. The limit magnitudes will be deduced.

This paper reports on the performance of the instrument measured in laboratory (results of test plan in Nice and AIV in Paranal) in terms of spectral coverage, dispersion laws and spectral resolutions, and transfer function analysis: instrumental contrast, visibility accuracy, accuracy of the differential phase, of the closure-phase and of the differential visibility. It also provides results of the first tests on sky and the planning of the on-going commissioning.

Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

Commissioning MATISSE: first results

Romain Petrov, Fatmé Allouche, Philippe Berio, Alain Chelli, Pierre Cruzalèbes, Yan Fanteï, Walter Jaffe, Andreas Glindemann, Stéphane Lagarde, Bruno Lopez, Alexis Matter, Antony Meilland, Florentin Millour, Sebastien Morel, Claudia Paladini, Thomas Rivinius, Sylvie Robbe-Dubois, Sylvain Rousseau, Markus Schöller, Jozsef Varga, Gérard Zins

Proceedings Volume 10701, 1070109 (2018) https://doi.org/10.1117/12.2312104

KEYWORDS: Calibration, Visibility, L band, Signal to noise ratio, Sensors, Spectral resolution, Stars, Astronomical interferometry, Astronomical spectroscopy

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Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

The installation and ongoing commissioning of the MATISSE mid-infrared interferometer at the ESO Very Large Telescope Observatory

B. Lopez, S. Lagarde, A. Matter, T. Agocs, F. Allouche, P. Antonelli, J.-C. Augereau, C. Bailet, P. Berio, F. Bettonvil, U. Beckmann, R. van Boekel, Y. Bresson, P. Bristow, P. Cruzalebes, M. Delbo, C. Dominik, E. Elswijk, Y. Fantei, A. Glindemann, M. Heininger, K.-H. Hofmann, M. Hogerheijde, J. Hron, W. Jaffe, G. Kroes, W. Laun, M. Lehmitz, A. Meilland, K. Meisenheimer, F. Millour, S. Morel, U. Neumann, E. Pantin, R. Petrov, S. Robbe-Dubois, D. Schertl, M. Schoeller, S. Wolf, G. Zins, T. Henning, Ph. Stee, G. Weigelt

Proceedings Volume 10701, 107010Z (2018) https://doi.org/10.1117/12.2313388

KEYWORDS: Interferometry, Spectral resolution, Sensors, Mid-IR, Visibility, Stars, Imaging systems, Interferometers, Photometry, Observatories

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Proceedings Article | 4 August 2016 Paper

Paper

MATISSE: alignment, integration, and test phase first results

F. Allouche, S. Robbe-Dubois, S. Lagarde, P. Cruzalèbes, P. Antonelli, Y. Bresson, Y. Fantei-Caujolle, A. Marcotto, S. Morel, U. Beckmann, F. Bettonvil, Ph. Berio, M. Heininger, M. Lehmitz, T. Agocs, R. Brast, E. Elswijk, D. Ives, K. Meixner, W. Laun, M. Mellein, U. Neumann, C. Bailet, J.-M. Clausse, A. Matter, A. Meilland, F. Millour, R. G. Petrov, M. Accardo, P. Bristow, R. Frahm, A. Glindemann, J.-C. Gonzáles Herrera, J.-L. Lizon, M. Schöller, U. Graser, W. Jaffe, B. Lopez

Proceedings Volume 9907, 99070C (2016) https://doi.org/10.1117/12.2232414

KEYWORDS: Interferometry, Beam splitters, Sensors, Mid-IR, Telescopes, Mid-IR, Mirrors, Optical alignment, L band, Spectral resolution, Calibration

Read Abstract +

MATISSE (Multi AperTure mid-Infrared SpectroScopic Experiment) is the spectro-interferometer for the VLTI of the European Southern Observatory, operating in near and mid-infrared, and combining up to four beams from the unit or the auxiliary telescopes. MATISSE will offer new breakthroughs in the study of circumstellar environments by allowing the multispectral mapping of the material distribution, the gas and essentially the dust.

The instrument consists in a warm optical system (WOP) accepting four optical beams and relaying them after a dichroic splitting (for the L and M- and N- spectral bands) to cold optical benches (COB) located in two separate cryostats. The Observatoire de la Côte d’Azur is in charge of the WOP providing the spectral band separation, optical path equalization and modulation, pupil positioning, beam anamorphosis, beam commutation, and calibration. NOVA-ASTRON is in charge of the COB providing the functions of beam selection, reduction of thermal background emission, spatial filtering, pupil transfer, photometry and interferometry splitting, additional beam anamorphosis, spectral filtering, polarization selection, image dispersion, and image combination. The Max Planck Institut für Radio Astronomie is in charge of the operation and performance validation of the two detectors, a HAWAII-2RG from Teledyne for the L- and M- bands and a Raytheon AQUARIUS for the N-band. Both detectors are provided by ESO. The Max Planck Institut für Astronomie is in charge of the electronics and the cryostats for which the requirements on space limitations and vibration stability resulted on very specific and stringent decisions on the design.

The integration and test of the COB: the two cryogenic systems, including the cold benches and the detectors, have been conducted at MPIA in parallel with the integration of the WOP at OCA. At the end of 2014, the complete instrument was integrated at OCA. Following this integration, a period of interface and alignment between the COB and the WOP took place resulting in the first interference fringes in the L-band during summer 2015 and the first interference fringes in the N-ban in March 2016.

After a period of optimization of both the instrument reliability and the environmental working conditions, the test plan is presently being conducted in order to evaluate the complete performance of the instrument and its compliance with the high-level requirements. The present paper gives the first results of the alignment, integration and test phase of the MATISSE instrument.

Proceedings Article | 4 August 2016 Paper

Paper

An overview of the mid-infrared spectro-interferometer MATISSE: science, concept, and current status

A. Matter, B. Lopez, P. Antonelli, M. Lehmitz, F. Bettonvil, U. Beckmann, S. Lagarde, W. Jaffe, R. Petrov, P. Berio, F. Millour, S. Robbe-Dubois, A. Glindemann, P. Bristow, M. Schoeller, T. Lanz, T. Henning, G. Weigelt, M. Heininger, S. Morel, P. Cruzalebes, K. Meisenheimer, R. Hofferbert, S. Wolf, Y. Bresson, T. Agocs, F. Allouche, J.-C. Augereau, G. Avila, C. Bailet, J. Behrend, G. van Belle, J.-P. Berger, R. van Boekel, P. Bourget, R. Brast, J.-M. Clausse, C. Connot, R. Conzelmann, G. Csepany, W. Danchi, M. Delbo, C. Dominik, A. van Duin, E. Elswijk, Y. Fantei, G. Finger, A. Gabasch, F. Gonté, U. Graser, F. Guitton, S. Guniat, M. De Haan, P. Haguenauer, H. Hanenburg, K.-H. Hofmann, M. Hogerheijde, R. ter Horst, J. Hron, C Hummel, J. Isderda, D. Ives, G. Jakob, A. Jasko, P. Jolley, S. Kiraly, J. Kragt, T. Kroener, G. Kroes, S. Kuindersma, L. Labadie, W. Laun, C. Leinert, J.-L. Lizon, C. Lucuix, A. Marcotto, F. Martinache, G. Martinot-Lagarde, N. Mauclert, L. Mehrgan, A. Meilland, M. Mellein, S. Menardi, A. Merand, U. Neumann, E. Nussbaum, S. Ottogalli, R. Palsa, J. Panduro, E. Pantin, I. Percheron, T. Phan Duc, J.-U. Pott, E. Pozna, R. Roelfsema, G. Rupprecht, D. Schertl, C. Schmidt, M. Schuil, A. Spang, J. Stegmeier, N. Tromp, F. Vakili, M. Vannier, K. Wagner, L. Venema, J. Woillez

Proceedings Volume 9907, 99070A (2016) https://doi.org/10.1117/12.2233052

KEYWORDS: Mid-IR, Interferometry, Telescopes, Signal detection, Sensors, Stars, Spectral resolution, Fourier transforms, L band, Cameras

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Proceedings Article | 24 July 2014 Paper

Paper

System engineering applied to VLTI: a scientific success

P. Haguenauer, J. Alonso, P. Bourget, Ph. Gitton, S. Morel, S. Poupar, Nicolas Schuhler

Proceedings Volume 9146, 91460Y (2014) https://doi.org/10.1117/12.2055330

KEYWORDS: Systems engineering, Interferometry, Astatine, Beam splitters, Polarization, Interferometers, Telescopes, Mirrors, Observatories, Calibration

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Proceedings Article | 24 July 2014 Paper

Paper

MATISSE status report and science forecast

B. Lopez, S. Lagarde, W. Jaffe, R. Petrov, M. Schöller, P. Antonelli, U. Beckman, Ph. Bério, F. Bettonvil, U. Graser, F. Millour, S. Robbe-Dubois, L. Venema, S. Wolf, P. Bristow, A. Glindemann, J.-C. Gonzalez, Th. Lanz, T. Henning, G. Weigelt, T. Agócs, J.-C. Augereau, G. Ávila, C. Bailet, J. Behrend, J.-P. Berger, Roy von Boekel, S. Bonhomme, P. Bourget, R. Brast, Y. Bresson, J. Clausse, O. Chesneau, G. Csépány, C. Connot, A. Crida, W. Danchi, M. Delbo , F. Delplancke, C. Dominik, M. Dugué, E. Elswijk, Y. Fanteï, G. Finger, A. Gabasch, P. Girard, V. Girault, P. Gitton, A. Glazenborg, F. Gonté, F. Guitton, S. Guniat, M. De Haan, P. Haguenauer, H. Hanenburg, M. Heininger, K.-H. Hofmann, M. Hogerheijde, R. ter Horst, J. Hron, Y. Hughes, D. Ives, G. Jakob, A. Jaskó, P. Jolley, J. Kragt, R. Köhler, T. Kroener, G. Kroes, L. Labadie, W. Laun, M. Lehmitz, Ch. Leinert, J. Lizon, Ch. Lucuix, A. Marcotto, F. Martinache, A. Matter, G. Martinot-Lagarde, N. Mauclert, L. Mehrgan, A. Meilland, M. Mellein, S. Ménardi, J. Menut, K. Meisenheimer, S. Morel, L. Mosoni, R. Navarro, U. Neumann, E. Nussbaum, S. Ottogalli, R. Palsa, J. Panduro, E. Pantin, I. Percheron, T. Phan Duc, J.-U. Pott, Eszter Pozna, F. Przygodda, A. Richichi, F. Rigal, G. Rupprecht, D. Schertl, J. Stegmeier, L. Thiam, N. Tromp, M. Vannier, F. Vakili, G. van Belle, K. Wagner, J. Woillez

Proceedings Volume 9146, 91460M (2014) https://doi.org/10.1117/12.2056419

KEYWORDS: Interferometry, Sensors, Mid-IR, Stars, Telescopes, Visibility, Planets, Spectral resolution, Photometry, Fourier transforms

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Proceedings Article | 24 July 2014 Paper

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 | 18 July 2014 Paper

Paper

Generic control software connecting astronomical instruments to the reflective memory data recording system of VLTI - bossvlti

Eszter Pozna, A. Ramirez, A. Mérand, A. Mueller, R. Abuter, R. Frahm, S. Morel, C. Schmid, T. Phan Duc, F. Delplancke-Ströbele

Proceedings Volume 9152, 91522X (2014) https://doi.org/10.1117/12.2054727

KEYWORDS: Sensors, Astronomy, Reflectivity, Binary data, Databases, Software development, Telecommunications, Control systems, Data communications, Software frameworks

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Proceedings Article | 12 September 2012 Paper

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

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 | 12 September 2012 Paper

Paper

Perspective of imaging in the mid-infrared at the Very Large Telescope Interferometer

B. Lopez, S. Lagarde, P. Antonelli, W. Jaffe, R. Petrov, L. Venema, Sylvie Robbe-Dubois, F. Bettonvil, P. Berio, R. Navarro, U. Graser, U. Beckman, G. Weigelt, F. Vakili, T. Henning, J.-C. Gonzales, S. Wolf, C. Bailet, J. Behrend, Y. Bresson, O. Chesneau, J. Clausse, C. Connot, M. Dugué, Y. Fantei, E. Elswijk, H. Hanenburg, K. Hofmann, M. Heininger, R. ter Horst, J. Hron, J. Kragt, N. Tromp, T. Agocs, G. Kroes, W. Laun, Ch. Leinert, M. Lehmitz, A. Matter, J. Menut, F. Millour, U. Neumann, E. Nussbaum, S. Ottogalli, J.-U. Pott, F. Rigal, A. Roussel, D. Schertl, M. Vannier, K. Wagner, M. Mellein, T. Kroener, N. Mauclert, P. Girard, G. Lagarde, L. Mosoni, A. Jasko, A. Glindemann, T. Phan Duc, G. Finger, D. Ives, G. Jakob, I. Percheron, G. Avila, R. Palsa, Eszter Pozna, J. Lizon, Ch. Lucuix, S. Menardi, P. Haguenauer, P. Gitton, S. Morel, F. Gonté, P. Jolley, G. Rupprecht, P. Bourget, F. Delplancke, L. Mehrgan, J. Stegmeier, G. van Belle, A. Richichi, A. Moorwood

Proceedings Volume 8445, 84450R (2012) https://doi.org/10.1117/12.926238

KEYWORDS: Interferometry, Sensors, Visibility, Mid-IR, L band, Telescopes, Spectral resolution, Image restoration, Interferometers, Photometry

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Proceedings Article | 22 July 2010 Paper

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 | 22 July 2010 Paper

Paper

First results using PRIMA FSU as a fringe tracker for MIDI

A. Müller, J.-U. Pott, S. Morel, R. Abuter, G. van Belle, R. van Boekel, L. Burtscher, F. Delplancke, Th. Henning, W. Jaffe, Ch. Leinert, B. Lopez, A. Matter, K. Meisenheimer, C. Schmid, K. Tristram, A. Verhoeff

Proceedings Volume 7734, 773420 (2010) https://doi.org/10.1117/12.857754

KEYWORDS: Stars, Astatine, Calibration, Interferometry, Photometry, K band, Visibility, Planets, Prisms, Phase measurement

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Proceedings Article | 22 July 2010 Paper

Paper

PIONIER: a visitor instrument for VLTI

J.-P. Berger, G. Zins, B. Lazareff, J.-B. Lebouquin, L. Jocou, P. Kern, R. Millan-Gabet, W. Traub, P. Haguenauer, O. Absil, J.-C. Augereau, M. Benisty, N. Blind, X. Bonfils, A. Delboulbe, P. Feautrier, M. Germain, D. Gillier, P. Gitton, M. Kiekebusch, J. Knudstrup, J.-L. Lizon, Y. Magnard, F. Malbet, D. Maurel, F. Menard, M. Micallef, L. Michaud, S. Morel, T. Moulin, D. Popovic, K. Perraut, P. Rabou, S. Rochat, F. Roussel, A. Roux, E. Stadler, E. Tatulli

Proceedings Volume 7734, 773435 (2010) https://doi.org/10.1117/12.858647

KEYWORDS: Infrared radiation, Interferometry, Current controlled current source, Astatine, Integrated optics, Spectral resolution, K band, Visibility

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Proceedings Article | 22 July 2010 Paper

Paper

First results from fringe tracking with the PRIMA fringe sensor unit

J. Sahlmann, R. Abuter, S. Ménardi, C. Schmid, N. Di Lieto, F. Delplancke, R. Frahm, N. Gomes, P. Haguenauer, S. Lévêque, S. Morel, A. Mueller, T. Phan Duc, N. Schuhler, G. van Belle

Proceedings Volume 7734, 773422 (2010) https://doi.org/10.1117/12.856896

KEYWORDS: Calibration, Phase shifts, Sensors, Phase measurement, Control systems, Observatories, Polarization, Telescopes, Interferometers, Chemical elements

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Proceedings Article | 22 July 2010 Paper

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 | 28 July 2008 Paper

Paper

Fringe tracking at VLTI: status report

Jean-Baptiste Le Bouquin, Roberto Abuter, Bertrand Bauvir, Henri Bonnet, Pierre Haguenauer, Nicola di Lieto, Serge Menardi, Sébastien Morel, Fredrik Rantakyrö, Markus Schoeller, Anders Wallander, Stefan Wehner

Proceedings Volume 7013, 701318 (2008) https://doi.org/10.1117/12.788414

KEYWORDS: Signal to noise ratio, Visibility, Telescopes, Reconstruction algorithms, Interferometry, Stars, Modulation, Calibration, Observatories, Astronomy

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Proceedings Article | 28 July 2008 Paper

Paper

Toward a revival of stellar intensity interferometry

Stephan LeBohec, Cesare Barbieri, Willem-Jan de Wit, Dainis Dravins, Philippe Feautrier, Cédric Foellmi, Andreas Glindemann, Jeter Hall, Jamie Holder, Richard Holmes, Pierre Kervella, David Kieda, Etienne Le Coarer, Stephan Lipson, Fabien Malbet, Sébastien Morel, Paul Nuñez, Aviv Ofir, Erez Ribak, Swapan Saha, Markus Schoeller, Boriz Zhilyaev, Hans Zinnecker

Proceedings Volume 7013, 70132E (2008) https://doi.org/10.1117/12.787443

KEYWORDS: Atmospheric Cherenkov telescopes, Telescopes, Interferometry, Stars, Interferometers, Optical correlators, Receivers, Sensors, Field programmable gate arrays, Signal processing

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Proceedings Article | 28 July 2008 Paper

Paper

First step to detect an extrasolar planet using simultaneous observations with the two VLTI instruments AMBER and MIDI

A. Matter, W. Jaffe, M. Vannier, S. Morel, S. Lagarde, B. Lopez, F. Rantakyrö, T. Rivinius, R. Petrov, C. Leinert

Proceedings Volume 7013, 701341 (2008) https://doi.org/10.1117/12.789368

KEYWORDS: Phase measurement, Stars, Calibration, Planets, Interferometry, Exoplanets, Jupiter, Water, Phase interferometry, K band

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Proceedings Article | 28 July 2008 Paper

Paper

The Very Large Telescope Interferometer: an update

Pierre Haguenauer, Roberto Abuter, Jaime Alonso, Javier Argomedo, Bertrand Bauvir, Guillaume Blanchard, Henri Bonnet, Stéphane Brillant, Michael Cantzler, Frédéric Derie, Françoise Delplancke, Nicola Di Lieto, Christophe Dupuy, Yves Durand, Philippe Gitton, Bruno Gilli, Andreas Glindemann, Serge Guniat, Stéphane Guisard, Nicolas Haddad, Gerhard Hudepohl, Christian Hummel, Nathaniel Jesuran, Andreas Kaufer, Bertrand Koehler, Jean-Baptiste Le Bouquin, Samuel Lévêque, Christopher Lidman, Pedro Mardones, Serge Ménardi, Sébastien Morel, Isabelle Percheron, Monika Petr-Gotzens, Than Phan Duc, Florence Puech, Andres Ramirez, Fredrik Rantakyrö, Andrea Richichi, Thomas Rivinius, Johannes Sahlmann, Stefan Sandrock, Markus Schöller, Nicolas Schuhler, Fabio Somboli, Stanislav Stefl, Mario Tapia, Gerard Van Belle, Anders Wallander, Stefan Wehner, Markus Wittkowski

Proceedings Volume 7013, 70130C (2008) https://doi.org/10.1117/12.788209

KEYWORDS: Telescopes, Astatine, Adaptive optics, Mirrors, Interferometers, Large telescopes, Interferometry, IRIS Consortium, Sensors, Observatories

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Proceedings Article | 28 June 2006 Paper

Paper

Adaptive optics quality metrics and the user constraint set for VLTI

I. Percheron, M. Wittkowski, R. Donaldson, E. Fedrigo, C. Lidman, S. Morel, F. Rantakyro, M. Schoeller, A. Wallander

Proceedings Volume 6268, 626842 (2006) https://doi.org/10.1117/12.671221

KEYWORDS: Adaptive optics, Telescopes, Interferometry, Image quality, Stars, Quality systems, Wavefronts, Visibility, Interferometers, Image acquisition

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Proceedings Article | 28 June 2006 Paper

Paper

Experiences from the first AMBER open time observations

Fredrik Rantakyrö, Pascal Ballester, Stephane Brillant, Gilles Duvert, Emmanuel Galliano, Christian Hummel, Andreas Kaufer, Mario Kiekebusch, Etienne Le-Coarer, Tom Licha, Fabien Malbet, Pedro Mardones, Florentin Millour, Sebastien Morel, Isabelle Percheron, Monika Petr-Gotzens, Romain Petrov, Andrea Richichi, Thomas Rivinius, Markus Schöller, Stan Stefl, Martin Vannier, Markus Wittkowski, Gerard Zins

Proceedings Volume 6268, 62681N (2006) https://doi.org/10.1117/12.671910

KEYWORDS: Telescopes, Calibration, K band, Observatories, Astatine, Motion models, Astronomy, Spectral resolution, Lawrencium, Interferometry

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Proceedings Article | 27 June 2006 Paper

Paper

Recent progress at the Very Large Telescope Interferometer

Markus Schöller, Javier Argomedo, Bertrand Bauvir, Leonardo Blanco-Lopez, Henri Bonnet, Stephane Brillant, Michael Cantzler, Johan Carstens, Fabio Caruso, Christian Choque-Cortez, Frederic Derie, Francoise Delplancke, Nicola Di Lieto, Martin Dimmler, Yves Durand, Mark Ferrari, Emmanuel Galliano, Philippe Gitton, Bruno Gilli, Andreas Glindemann, Serge Guniat, Stephane Guisard, Nicolas Haddad, Pierre Haguenauer, Nico Housen, Gerd Hudepohl, Christian Hummel, Andreas Kaufer, Mario Kiekebusch, Bertrand Koehler, Jean-Baptiste Le Bouquin, Samuel Leveque, Christopher Lidman, Pedro Mardones, Serge Menardi, Sebastien Morel, Manfred Mornhinweg, Jean-Luc Nicoud, Isabelle Percheron, Monika Petr-Gotzens, Than Phan Duc, Florence Puech, Andres Ramirez, Fredrik Rantakyrö, Andrea Richichi, Thomas Rivinius, Stefan Sandrock, Fabio Somboli, Jason Spyromilio, Stanislav Stefl, Vincent Suc, Roberto Tamai, Mario Tapia, Martin Vannier, Gautam Vasisht, Anders Wallander, Stefan Wehner, Markus Wittkowski, Juan Zagal

Proceedings Volume 6268, 62680L (2006) https://doi.org/10.1117/12.672231

KEYWORDS: Telescopes, Astatine, Interferometers, IRIS Consortium, Large telescopes, Interferometry, Mirrors, Optical fibers, Spectral resolution, Data archive systems

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Proceedings Article | 20 October 2004 Paper

Paper

Quality control and instrument trending for MIDI: First Quality Control and Data Flow Operations Results

Isabelle Percheron, Pascal Ballester, Cyrus Sabet, Markus Wittkowski, Sebastien Morel, Andrea Richichi

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551183

KEYWORDS: Calibration, Visibility, Data processing, Astronomy, Photometry, Interferometry, Data storage, Interferometers, Telescopes, Stars

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Proceedings Article | 20 October 2004 Paper

Paper

VLTI science operations at Paranal

Fredrik Rantakyro, Emmanuel Galliano, Christian Hummel, Andreas Kaufer, Pierre Kervella, Sebastien Morel, Markus Schoeller, Martin Vannier, Markus Wittkowski

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550059

KEYWORDS: Telescopes, Calibration, Astatine, Observatories, Astronomical telescopes, Astronomy, Optical proximity correction, Stars, Interferometry, Particle swarm optimization

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Proceedings Article | 20 October 2004 Paper

Paper

ARAL: a facility to fuel VLTI instruments with photons

Sebastien Morel, Martin Vannier, Serge Menardi, Fabio Biancat-Marchet, Michael Fischer, Philippe Gitton, Andreas Glindemann, Stephane Guisard, Nicholas Haddad, Nico Housen, Alexis Huxley, Mario Kiekebusch, Antonio Longinotti, Thanh Phan Duc, Markus Schoeller, Anders Wallander

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550175

KEYWORDS: Mirrors, Beam splitters, Optical fibers, Interferometry, Telescopes, Autocollimation, Optical alignment, Computer architecture, Lamps, Sensors

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Proceedings Article | 20 October 2004 Paper

Paper

Preparing MIDI science operation at VLTI

Sebastien Morel, Pascal Ballester, Bertrand Bauvir, Peter Biereichel, Jean-Gabriel Cuby, Emmanuel Galliano, Nicholas Haddad, Nico Housen, Christian Hummel, Andreas Kaufer, Pierre Kervella, Isabelle Percheron, Florence Puech, Fredrik Rantakyro, Andrea Richichi, Cyrus Sabet, Markus Schoeller, Jason Spyromilio, Martin Vannier, Anders Wallander, Markus Wittkowski, Christoph Leinert, Uwe Graser, Udo Neumann, Walter Jaffe, Jeroen de Jong

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550116

KEYWORDS: Telescopes, Interferometry, Visibility, Observatories, Calibration, Interferometers, Sensors, Electronics, Photometry, Mirrors

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Proceedings Article | 20 October 2004 Paper

Paper

Observing with the VLT interferometer

Markus Wittkowski, Pascal Ballester, Tim Canavan, Fernando Comeron, Christian Hummel, Andreas Kaufer, Stephane Marteau, Gautier Mathys, Sebastien Morel, Petra Nass, Isabelle Percheron, Michele Peron, Monika Petr-Gotzens, Fredrik Rantakyro, Andrea Richichi, Markus Schoeller, David Silva, Mario van den Ancker, Anders Wallander

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550389

KEYWORDS: Calibration, Stars, Visibility, Interferometry, Telescopes, Interferometers, Astatine, Data archive systems, Mid-IR, Prisms

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Proceedings Article | 20 October 2004 Paper

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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Proceedings Article | 20 October 2004 Paper

Paper

Design and tests for the correction of atmospheric and instrumental effects on color-differential phase with AMBER/VLTI

Martin Vannier, Romain Petrov, Markus Schoeller, Pierre Antonelli, Yves Bresson, Gilles Duvert, Carla Gil, Andreas Glindemann, Stephane Lagarde, Etienne LeCoarer, Bruno Lopez, Sebastien Morel, Fabien Malbet, Florentin Millour, Karine Rousselet-Perraut, Fredrik Rantakyro, Sylvie Robbe-Dubois

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551601

KEYWORDS: Calibration, Colorimetry, Interferometry, Phase measurement, Signal to noise ratio, Atmospheric corrections, K band, Stars, Dispersion, Telescopes

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Proceedings Article | 20 October 2004 Paper

Paper

Selection of an optimum subset of telescope configurations for the VLT Interferometer

Emmanuel Galliano, Markus Schoeller, Michael Fischer, Christian Hummel, Sebastien Morel, Fredrik Rantakyro, Martin Vannier

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550348

KEYWORDS: Telescopes, Interferometers, Vignetting, Large telescopes, Observatories, Interferometry, Stellar interferometry, Visibility, Astatine

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Proceedings Article | 29 September 2004 Paper

Paper

Concept of a photon-counting camera based on a diffraction-addressed Gray-code mask

Sebastien Morel

Proceedings Volume 5501, (2004) https://doi.org/10.1117/12.550180

KEYWORDS: Cameras, Electroluminescent displays, Diffraction, Optical filters, Image intensifiers, Sensors, Image resolution, Chemical elements, Optical fibers, Image filtering

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Proceedings Article | 21 February 2003 Paper

Paper

The VLTI: a status report

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

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458117

KEYWORDS: Stars, Telescopes, Interferometry, Sensors, Astatine, Adaptive optics, Observatories, Interferometers, K band, Mirrors

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Proceedings Article | 21 February 2003 Paper

Paper

Reconfigurable electronics at the IOTA interferometer

Ettore Pedretti, Rafael Millan-Gabet, John Monnier, S. Morel, Wesley Traub, Nathaniel Carleton, Jean-Philippe Berger, P. Schloerb, Michael Brewer, Sam Ragland, Marc Lacasse

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459339

KEYWORDS: Clocks, Cameras, Sensors, Stars, Electronics, Data conversion, Bridges, Control systems, Telescopes, Logic

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Proceedings Article | 21 February 2003 Paper

Paper

Realization of the MIDI cold optics

Annelie Glazenborg-Kluttig, Frank Przygodda, Hiddo Hanenburg, Sebastien Morel, Jan-Willem Pel

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459697

KEYWORDS: Mirrors, Sensors, Interferometry, Cameras, Optical alignment, Telescopes, Optical components, Aluminum, Beam splitters, Interferometers

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Proceedings Article | 21 February 2003 Paper

Paper

Aperture synthesis using multiple facilities: Keck aperture masking and the IOTA interferometer

John Monnier, Rafael Millan-Gabet, Peter Tuthill, Wesley Traub, Nathaniel Carleton, Vincent Coude du Foresto, William Danchi, Marc Lacasse, Sebastien Morel, Guy Perrin, Irene Porro

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459694

KEYWORDS: Visibility, Interferometers, Calibration, Image restoration, Synthetic apertures, Microelectromechanical systems, Stars, Interferometry, Astronomical imaging, Astronomy

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Proceedings Article | 21 February 2003 Paper

Paper

Commissioning the VLT interferometer: from first fringes towards a general user facility

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

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459678

KEYWORDS: Interferometers, Interferometry, Astronomical imaging, Astronomy, Telescopes

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Proceedings Article | 5 July 2000 Paper

Paper

Third telescope project at the IOTA interferometer

Wesley Traub, Nathaniel Carleton, Jesse Bregman, Michael Brewer, Marc Lacasse, P. Maymounkov, Rafael Millan-Gabet, John Monnier, Sebastien Morel, Costas Papaliolios, Michael Pearlman, Irene Porro, F. Peter Schloerb, Kamal Souccar

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390273

KEYWORDS: Mirrors, Telescopes, Control systems, Interferometers, Cameras, Stars, Infrared radiation, Computing systems, Wavefronts, Retroreflectors

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Proceedings Article | 5 July 2000 Paper

Paper

Thermal infrared stellar interferometry using single-mode guided optics: first scientific results from the IOTA

Bertrand Mennesson, Guy Perrin, Vincent Coude du Foresto, Gilles Chagnon, Cyril Ruilier, Sebastien Morel, Stephen Ridgway, Bruno Lopez, Patrick de Laverny, Wesley Traub, Nathaniel Carleton, Marc Lacasse

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390243

KEYWORDS: Interferometry, Thermography, Infrared radiation, Stars, Infrared telescopes, L band, Data modeling, Visibility, K band, Atmospheric modeling

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Proceedings Article | 5 July 2000 Paper

Paper

Fringe-tracking experiments at the IOTA interferometer

Sebastien Morel, Wesley Traub, Jesse Bregman, Robert Mah, Edward Wilson

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390247

KEYWORDS: Ferroelectric materials, Control systems, Autoregressive models, Interferometers, Sensors, Infrared radiation, Interferometry, Beam splitters, Turbulence, Bandpass filters

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Proceedings Article | 5 July 2000 Paper

Paper

Observations of MIRA stars with the IOTA/FLUOR interferometer and comparison with MIRA star models

Karl-Heinz Hofmann, Udo Beckmann, Thomas Bloecker, Vincent Coude du Foresto, Marc Lacasse, Rafael Millan-Gabet, Sebastien Morel, B. Pras, Cyril Ruilier, Dieter Schertl, Michael Scholz, Victor Shenavrin, Wesley Traub, Gerd Weigelt, Markus Wittkowski, Boris Yudin

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390270

KEYWORDS: Stars, K band, Visibility, Temperature metrology, Interferometers, Spatial frequencies, Fiber optics, Atmospheric optics, Astronomy, Interferometry

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Proceedings Article | 24 July 1998 Paper

Paper

Fringe tracking using a priori information on the optical path difference drift

Sebastien Morel, Laurent Koechlin

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317174

KEYWORDS: Autoregressive models, Fringe analysis, Signal to noise ratio, Optical tracking, Detection and tracking algorithms, Fourier transforms, Visibility, Atmospheric turbulence, Interferometers, Photon counting

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Proceedings Article | 24 July 1998 Paper

Paper

DELTA photon-counting camera: concept and current status

Sebastien Morel, Laurent Koechlin

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317201

KEYWORDS: Photon counting, Cameras, Sensors, Charge-coupled devices, Image intensifiers, Ions, Geometrical optics, Temporal resolution, Interferometry, Atmospheric turbulence

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Showing 5 of 44 publications

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