Dr. Alain E. Chelli Profile

Dr. Alain E. Chelli

at IPAG

SPIE Involvement:

Author

Publications (24)

Proceedings Article | 30 December 2020 Presentation + Paper

Presentation + Paper

Commissioning MATISSE: operation and performances

Romain Petrov, Fatmé Allouche, Alexis Matter, Anthony Meilland, Stéphane Lagarde, Philippe Berio, Pierre Cruzalèbes, Florentin Millour, Sylvie Robbe-Dubois, Walter Jaffe, Karl-Heinz Hofmann, Jozsef Varga, Dieter Schertl, Leonard Burtscher, Klaus Meisenheimer, Alain Chelli, Gerard Zins, Julien Woillez, Markus Schöller, Bruno Lopez

Proceedings Volume 11446, 114460L (2020) https://doi.org/10.1117/12.2562569

KEYWORDS: Interferometry, Visibility, Sensors, Phase shift keying, Spatial filters, Telescopes, Modulation, Phase measurement, K band, Physics

Read Abstract +

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

Read Abstract +

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

Read Abstract +

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 | 24 July 2014 Paper

Paper

A global database for optical interferometry

Xavier Haubois, Patrick Bernaud, Guillaume Mella, Gilles Duvert, Myriam Benisty, Philippe Bério, Laurent Bourges, Alain Chelli, Olivier Chesneau, Sylvestre Lacour, Sylvain Lafrasse, Jean-Baptiste Le Bouquin, Denis Mourard, Nicolas Nardetto, Johan Olofsson

Proceedings Volume 9146, 91460O (2014) https://doi.org/10.1117/12.2056977

KEYWORDS: Databases, Optical interferometry, Calibration, Data modeling, Interferometry, Observatories, Optical calibration, Diffusion, Modeling, Prototyping

Read Abstract +

Proceedings Article | 24 July 2014 Paper

Paper

A robust approach to estimate stellar angular diameters from photometry and spectral type

A. Chelli, L. Bourges, G. Duvert, S. Lafrasse, G. Mella, J.-B. Le Bouquin, O. Chesneau

Proceedings Volume 9146, 91462Z (2014) https://doi.org/10.1117/12.2056858

KEYWORDS: Stars, Databases, Photometry, Calibration, Error analysis, Interferometry, Cadmium sulfide, Visualization, Infrared radiation, Optical calibration

Read Abstract +

Proceedings Article | 12 September 2012 Paper

Paper

Accompanying optical interferometry worldwide: the JMMC tools and services

G. Mella, S. Lafrasse, L. Bourgès, A. Chelli, G. Duvert, O. Chesneau, F. Malbet, I. Tallon-Bosc, M. Vannier, O. Absil, M. Benisty, J.-P. Berger, H. Beust, D. Bonneau, P. Cruzalebes, X. Delfosse, A. Domiciano de Souza, P. Kervella, J. Kluska, J.-B. Le Bouquin, S. Meimon, A. Merand, F. Millour, J.-L. Monin, D. Mourard, L. Mugnier, N. Nardetto, K. Perraut, M. Tallon

Proceedings Volume 8445, 84453F (2012) https://doi.org/10.1117/12.925729

KEYWORDS: Data modeling, Interferometry, Calibration, Optical interferometry, Software development, Interfaces, Visibility, Interferometers, Java, Databases

Read Abstract +

Proceedings Article | 2 August 2010 Paper

Paper

Estimating the phase in interferomety: performance comparison between multi-mode and single-mode schemes

E. Tatulli, N. Blind, F. Malbet, A. Chelli, J.-P. Berger

Proceedings Volume 7734, 77342F (2010) https://doi.org/10.1117/12.853672

KEYWORDS: Interferometry, Phase interferometry, Sensors, Infrared radiation, Current controlled current source, Visibility, Photodetectors, Atmospheric sensing, Spatial filters, Speckle

Read Abstract +

Proceedings Article | 2 August 2010 Paper

Paper

Building the 'JMMC Stellar Diameters Catalog' using SearchCal

Sylvain Lafrasse, Guillaume Mella, Daniel Bonneau, Gilles Duvert, Xavier Delfosse, Olivier Chesneau, Alain Chelli

Proceedings Volume 7734, 77344E (2010) https://doi.org/10.1117/12.857024

KEYWORDS: Stars, Calibration, Cadmium sulfide, K band, Interferometry, Error analysis, Observatories, Databases, Optical interferometry, Statistical analysis

Read Abstract +

Proceedings Article | 2 August 2010 Paper

Paper

Phase closure nulling: results from the 2009 campaign

Gilles Duvert, Fabien Malbet, Alain Chelli, Rafael Millan-Gabet, John Monnier, Gail Schaefer

Proceedings Volume 7734, 77340U (2010) https://doi.org/10.1117/12.857970

KEYWORDS: Stars, Visibility, Calibration, Spectroscopy, Polarizers, Spatial frequencies, Bessel functions, Interferometers, Interferometry, Binary data

Read Abstract +

Proceedings Article | 2 August 2010 Paper

Paper

The third version of the AMBER data reduction software

Fabien Malbet, Gilles Duvert, Florentin Millour, Jean-Baptiste Le Bouquin, Guillaume Mella, Luc Halipré, Alain Chelli, Sylvain Lafrasse, Evelyne Altariba, Gérard Zins

Proceedings Volume 7734, 77344C (2010) https://doi.org/10.1117/12.857527

KEYWORDS: Calibration, Visibility, Astatine, Data modeling, Stars, Interferometry, Human-machine interfaces, Signal to noise ratio, Process control, Sensors

Read Abstract +

Proceedings Article | 28 July 2008 Paper

Paper

VSI: the VLTI spectro-imager

F. Malbet, D. Buscher, G. Weigelt, P. Garcia, M. Gai, D. Lorenzetti, J. Surdej, J. Hron, R. Neuhäuser, P. Kern, L. Jocou, J.-P. Berger, O. Absil, U. Beckmann, L. Corcione, G. Duvert, M. Filho, P. Labeye, E. Le Coarer, G. Li Causi, J. Lima, K. Perraut, E. Tatulli, E. Thiébaut, J. Young, G. Zins, A. Amorim, B. Aringer, T. Beckert, M. Benisty, X. Bonfils, A. Cabral, A. Chelli, O. Chesneau, A. Chiavassa, R. Corradi, M. De Becker, A. Delboulbé, G. Duchêne, T. Forveille, C. Haniff, E. Herwats, K.-H. Hofmann, J.-B. Le Bouquin, S. Ligori, D. Loreggia, A. Marconi, A. Moitinho, B. Nisini, P.-O. Petrucci, J. Rebordao, R. Speziali, L. Testi, F. Vitali

Proceedings Volume 7013, 701329 (2008) https://doi.org/10.1117/12.789710

KEYWORDS: Telescopes, Stars, Spectral resolution, Spatial resolution, Interferometry, Integrated optics, Space telescopes, Visibility, Image restoration, Signal to noise ratio

Read Abstract +

The VLTI Spectro Imager (VSI) was proposed as a second-generation instrument of the Very Large Telescope Interferometer providing the ESO community with spectrally-resolved, near-infrared images at angular resolutions down to 1.1 milliarcsecond and spectral resolutions up to R = 12000. Targets as faint as K = 13 will be imaged without requiring a brighter nearby reference object; fainter targets can be accessed if a suitable reference is available. The unique combination of high-dynamic-range imaging at high angular resolution and high spectral resolution enables a scientific program which serves a broad user community and at the same time provides the opportunity for breakthroughs in many areas of astrophysics. The high level specifications of the instrument are derived from a detailed science case based on the capability to obtain, for the first time, milliarcsecond-resolution images of a wide range of targets including: probing the initial conditions for planet formation in the AU-scale environments of young stars; imaging convective cells and other phenomena on the surfaces of stars; mapping the chemical and physical environments of evolved stars, stellar remnants, and stellar winds; and disentangling the central regions of active galactic nuclei and supermassive black holes. VSI will provide these new capabilities using technologies which have been extensively tested in the past and VSI requires little in terms of new infrastructure on the VLTI. At the same time, VSI will be able to make maximum use of new infrastructure as it becomes available; for example, by combining 4, 6 and eventually 8 telescopes, enabling rapid imaging through the measurement of up to 28 visibilities in every wavelength channel within a few minutes. The current studies are focused on a 4-telescope version with an upgrade to a 6-telescope one. The instrument contains its own fringe tracker and tip-tilt control in order to reduce the constraints on the VLTI infrastructure and maximize the scientific return.

Proceedings Article | 28 July 2008 Paper

Paper

System overview of the VLTI Spectro-Imager

L. Jocou, J. P. Berger, F. Malbet, P. Kern, U. Beckmann, D. Lorenzetti, L. Corcione, G. Li Causi, D. Buscher, J. Young, M. Gai, G. Weigelt, G. Zins, G. Duvert, K. Perraut, P. Labeye, O. Absil, P. Garcia, D. Loreggia, J. Lima, J. Rebordao, S. Ligori, A. Amorim, P. Rabou, J. B. Le Bouquin, C. Haniff, E. Le Coarer, P. Feautrier, G. Duchene, M. Benisty, A. Chelli, E. Herwats, A. Delboulbé

Proceedings Volume 7013, 70132Y (2008) https://doi.org/10.1117/12.789154

KEYWORDS: Optical fibers, Mirrors, Sensors, Beam splitters, Interferometry, Spectrographs, Fourier transforms, Calibration, Information operations, Computed tomography

Read Abstract +

Proceedings Article | 20 October 2004 Paper

Paper

VITRUV, a second-generation VLTI instrument for aperture synthesis imaging with eight telescopes

Fabien Malbet, Jean-Philippe Berger, Pierre Kern, Karine Rousselet-Perraut, Pierre-Olivier Petrucci, Francois Menard, Alain Chelli, Gilles Duvert, Jean-Baptiste Lebouquin, Eric Tatulli, Pierre Labeye, Isabelle Schanen-Duport, Eric Thiebaut, Paulo Garcia, I. Carvalho

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550673

KEYWORDS: Telescopes, Stars, Synthetic apertures, Magnetism, Integrated optics, Spatial resolution, Interferometers, Interferometry, Objectives, Radio optics

Read Abstract +

Proceedings Article | 20 October 2004 Paper

Paper

Detecting Jupiters with AMBER on the VLTI

Eric Tatulli, Alain Chelli

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550347

KEYWORDS: Visibility, Jupiter, Stars, Planets, Signal to noise ratio, Process modeling, Telescopes, Calibration, Interferometry, Interferometers

Read Abstract +

Proceedings Article | 20 October 2004 Paper

Paper

Data reduction for the AMBER instrument

Florentin Millour, Eric Tatulli, Alain Chelli, Gilles Duvert, Gerard Zins, B. Acke, Fabien Malbet

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551596

KEYWORDS: Visibility, Calibration, Telescopes, Interferometry, Sensors, Photometry, Neptunium, Spatial frequencies, Algorithm development, Camera shutters

Read Abstract +

Proceedings Article | 21 February 2003 Paper

Paper

General formalism of model-fitting for interferometric observables

Eric Tatulli, Alain Chelli

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.457138

KEYWORDS: Signal to noise ratio, Visibility, Telescopes, Interferometry, Stars, Interferometers, Error analysis, Spatial frequencies, K band, Sensors

Read Abstract +

Proceedings Article | 21 February 2003 Paper

Paper

Interferometry with singlemode waveguide

Pierre Mege, Fabien Malbet, Alain Chelli

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458917

KEYWORDS: Waveguides, Visibility, Interferometry, Single mode fibers, Cladding, Interferometers, Antennas, Optical fibers, Spatial filters, Integrated optics

Read Abstract +

Proceedings Article | 21 February 2003 Paper

Paper

Using the near-infrared VLTI instrument AMBER

Romain Petrov, Fabien Malbet, Gerd Weigelt, Franco Lisi, Pascal Puget, Pierre Antonelli, Udo Beckmann, Stephane Lagarde, Etienne Lecoarer, Sylvie Robbe-Dubois, Gilles Duvert, Sandro Gennari, Alain Chelli, Michel Dugue, Karine Rousselet-Perraut, Martin Vannier, Denis Mourard

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459113

KEYWORDS: Calibration, Visibility, Stars, Telescopes, Spectrographs, Sensors, Phase measurement, Spatial filters, Planets, Astatine

Read Abstract +

Proceedings Article | 21 February 2003 Paper

Paper

Jean-Marie Mariotti Center for Interferometry

Alain Chelli, Gilles Duvert, Daniel Bonneau, Guy Perrin, Eric Thiebaut, Denis Mourard, Romain Petrov, Pierre Cruzalebes, Bruno Lopez, Fabien Malbet, Gerard Daigne, Marc Ollivier

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458699

KEYWORDS: Interferometry, Software development, Interferometers, Calibration, Stars, Telescopes, Algorithm development, Visibility, Image restoration, Spatial resolution

Read Abstract +

Proceedings Article | 5 July 2000 Paper

Paper

AMBER: the near-infrared focal instrument for the Very Large Telescope Interferometer

Romain Petrov, Fabien Malbet, Andrea Richichi, Karl-Heinz Hofmann, Denis Mourard, Karim Agabi, Pierre Antonelli, Eric Aristidi, Carlo Baffa, Udo Beckmann, Philippe Berio, Yves Bresson, Frederic Cassaing, Alain Chelli, Albrecht Dreiss, Michel Dugue, Gilles Duvert, Thierry Forveille, E. Fossat, Sandro Gennari, M. Geng, Andre Glentzlin, Daniel Kamm, Stephane Lagarde, Etienne LeCoarer, Danielle LeContel, John Michel LeContel, Franco Lisi, Bruno Lopez, Gilbert Mars, Gregoire Martinot-Lagarde, Djamel Mekarnia, Jean-Louis Monin, David Mouillet, Christian Perrier-Bellet, Pascal Puget, Yves Rabbia, Sylvestre Rebattu, Francois Reynaud, Sylvie Robbe-Dubois, Karine Perraut-Rousselet, Michel Sacchettini, Markus Schoeller, Isabelle Tallon-Bosc, Gerd Weigelt

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390256

KEYWORDS: Telescopes, Visibility, Interferometry, Spectrographs, Adaptive optics, Sensors, Stars, Spatial filters, Interferometers, Optical fibers

Read Abstract +

Proceedings Article | 5 July 2000 Paper

Paper

AMBER performances: signal-to-noise ratio analysis

Fabien Malbet, Alain Chelli, Romain Petrov

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390213

KEYWORDS: Signal to noise ratio, Telescopes, Sensors, Adaptive optics, Visibility, Astatine, Optical fibers, Actuators, Atmospheric optics, Spectral resolution

Read Abstract +

Proceedings Article | 5 July 2000 Paper

Paper

Spatial filtering in AMBER

Pierre Mege, Fabien Malbet, Alain Chelli

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390198

KEYWORDS: Spatial filters, Signal to noise ratio, Atmospheric propagation, Photons, Interferometry, Adaptive optics, Atmospheric turbulence, Waveguides, Tin, Interferometers

Read Abstract +

Proceedings Article | 11 September 1998 Paper

Paper

Estimation of the point spread function for the adaptive optics system ADONIS

Stephan Harder, Alain Chelli

Proceedings Volume 3353, (1998) https://doi.org/10.1117/12.321647

KEYWORDS: Point spread functions, Adaptive optics, Mirrors, Optical transfer functions, Turbulence, Telescopes, Wavefronts, Wavefront sensors, Monochromatic aberrations, Sensors

Read Abstract +

Proceedings Article | 9 June 1994 Paper

Paper

Franco-Mexican Differential Speckle Interferometer

Salvador Cuevas, Romain Petrov, Alain Chelli, Stephane Lagarde, Andre Couve, Silvio Tinoco, Leonardo Sanchez

Proceedings Volume 2200, (1994) https://doi.org/10.1117/12.177280

KEYWORDS: Speckle, Sensors, Spectrographs, Diffraction, Interferometers, Mirrors, Stars, Telescopes, Calibration, Photon counting

Read Abstract +

Showing 5 of 24 publications

SIGN IN TO:

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Advertisement

Advertisement