Dr. Vincent Minier Profile

Dr. Vincent Minier

at Commissariat à l'Energie Atomique

SPIE Involvement:

Author

Publications (6)

Proceedings Article | 2 August 2014 Paper

TALC: a new deployable concept for a 20m far-infrared space telescope

Gilles Durand, Marc Sauvage, Aymeric Bonnet, Louis Rodriguez, Samuel Ronayette, Pierre Chanial, Loris Scola, Vincent Révéret, Hervé Aussel, Michael Carty, Matthis Durand, Lancelot Durand, Pascal Tremblin, Eric Pantin, Michel Berthe, Jérôme Martignac, Frédérique Motte, Michel Talvard, Vincent Minier, Pascal Bultel

Proceedings Volume 9143, 91431A (2014) https://doi.org/10.1117/12.2055895

KEYWORDS: Telescopes, Space telescopes, Mirrors, Talc, Skin, Satellites, Carbon, Solids, Plasma, Interferometers

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TALC, Thin Aperture Light Collector is a 20 m space observatory project exploring some unconventional optical solutions (between the single dish and the interferometer) allowing the resolving power of a classical 27 m telescope. With TALC, the principle is to remove the central part of the prime mirror dish, cut the remaining ring into 24 sectors and store them on top of one-another. The aim of this far infrared telescope is to explore the 600 μm to 100 μm region. With this approach we have shown that we can store a ring-telescope of outer diameter 20m and ring thickness of 3m inside the fairing of Ariane 5 or Ariane 6. The general structure is the one of a bicycle wheel, whereas the inner sides of the segments are in compression to each other and play the rule of a rim. The segments are linked to each other using a pantograph scissor system that let the segments extend from a pile of dishes to a parabolic ring keeping high stiffness at all time during the deployment. The inner corners of the segments are linked to a central axis using spokes as in a bicycle wheel. The secondary mirror and the instrument box are built as a solid unit fixed at the extremity of the main axis. The tensegrity analysis of this structure shows a very high stiffness to mass ratio, resulting into 3 Hz Eigen frequency. The segments will consist of two composite skins and honeycomb CFRP structure build by replica process. Solid segments will be compared to deformable segments using the controlled shear of the rear surface. The adjustment of the length of the spikes and the relative position of the side of neighbor segments let control the phasing of the entire primary mirror. The telescope is cooled by natural radiation. It is protected from sun radiation by a large inflatable solar screen, loosely linked to the telescope. The orientation is performed by inertia-wheels. This telescope carries a wide field bolometer camera using cryocooler at 0.3K as one of the main instruments. This telescope may be launched with an Ariane 6 rocket up to 800 km altitude, and use a plasma stage to reach the Lagrange 2 point within 18 month. The plasma propulsion stage is a serial unit also used in commercial telecommunication satellites. When the plasma launch is completed, the solar panels will be used to provide the power for communication, orientation and power the cryo-coolers for the instruments. The guide-line for development of this telescope is to use similar techniques and serial subsystems developed for the satellite industry. This is the only way to design and manufacture a large telescope at a reasonable cost.

Proceedings Article | 2 August 2014 Paper

The science case and data processing strategy for the Thinned Aperture Light Collector (TALC): a project for a 20m far-infrared space telescope

Marc Sauvage, Pierre Chanial, Gilles Durand, Louis Rodriguez, Jean-Luc Starck, Samuel Ronayette, Hervé Aussel, Vincent Minier, Frédérique Motte, Eric Pantin, Florent Sureau, Robin Terrisse

Proceedings Volume 9143, 91431B (2014) https://doi.org/10.1117/12.2055557

KEYWORDS: Talc, Telescopes, Space telescopes, Point spread functions, Signal to noise ratio, Electroluminescent displays, Galactic astronomy, Spatial resolution, Stars, Signal processing

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The future of far-infrared observations rests on our capacity to reach sub-arcsecond angular resolution around 100 μm, in order to achieve a significant advance with respect to our current capabilities. Furthermore, by reaching this angular resolution we can bridge the gap between capacities offered by the JWST in the near infrared and those allowed by ALMA in the submillimeter, and thus benefit from similar resolving capacities over the whole wavelength range where interstellar dust radiates and where key atomic and molecular transitions are found. In an accompanying paper,¹ we present a concept of a deployable annular telescope, named TALC for Thinned Aperture Light Collector, reaching 20m in diameter. Being annular, this telescope features a main beam width equivalent to that of a 27m telescope, i.e. an angular resolution of 0.92" at 100 μm. In this paper we focus on the science case of such a telescope as well on the aspects of unconventional data processing that come with this unconventional optical configuration. The principal science cases of TALC revolve around its imaging capacities, that allow resolving the Kuiper belt in extra-solar planetary systems, or the filamentary scale in star forming clouds all the way to the Galactic Center, or the Narrow Line Region in Active Galactic Nuclei of the Local Group, or breaking the confusion limit to resolve the Cosmic Infrared Background. Equipping this telescope with detectors capable of imaging polarimetry offers as well the extremely interesting perspective to study the influence of the magnetic field in structuring the interstellar medium. We will then present simulations of the optical performance of such a telescope. The main feature of an annular telescope is the small amount of energy contained in the main beam, around 30% for the studied configuration, and the presence of bright diffraction rings. Using simulated point spread functions for realistic broad-band filters, we study the observing performance of TALC in typical situations, i.e a field of point sources, and fields with emission power at every physical scales, taken to represent an extragalactic deep field observation and an interstellar medium observation. We investigate different inversion techniques to try and recover the information present in the input field. We show that techniques combining a forward modeling of the observation process and a reconstruction algorithm exploiting the concept of sparsity (i.e. related to the more general field of compressed sensing) represent a promising avenue to reach the angular resolution promised by the main beam of TALC.

Proceedings Article | 22 July 2014 Paper

Antarctic observations at long wavelengths with the IRAIT-ITM Telescope at Dome C

Gilles Durand, Pascal Tremblin, Vincent Minier, Yann Reinert, Christophe Leroy dos Santos, Louis Rodriguez, Xavier Joffrin, Maurizio Busso, Gino Tosti, Giuliano Nucciarelli, Mauro Dolci, Oscar Straniero, Angelo Valentini, Carlos Abia, Jean Marc Christille, Eric Doumayrou, Michel Lortholary, Patrice Charron, Paul Lotrus, Christian Walter, Samuel Ronayette, Zalpha Challita, Laurent Fromont, Mathieu Condamin, Min Kyong Kwon, Daniele Tavagnacco

Proceedings Volume 9145, 91450D (2014) https://doi.org/10.1117/12.2056562

KEYWORDS: Telescopes, Cameras, Bolometers, Sun, Astronomy, Mirrors, Astronomical telescopes, Stars, Sensors, Optical filters

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Proceedings Article | 18 July 2008 Paper

Recent results obtained on the APEX 12 m antenna with the ArTeMiS prototype camera

M. Talvard, P. André, L. Rodriguez, Y. Le-Pennec, C. De Breuck, V. Revéret, P. Agnèse, O. Boulade, E. Doumayrou, D. Dubreuil, E. Ercolani, P. Gallais, B. Horeau, PO Lagage, B. Leriche, M. Lortholary, J. Martignac, V. Minier, E. Pantin, D. Rabanus, J. Relland, G. Willmann

Proceedings Volume 7020, 70200A (2008) https://doi.org/10.1117/12.788197

KEYWORDS: Cameras, Sensors, Telescopes, Electronics, Bolometers, Prototyping, Space telescopes, Cryogenics, Mirrors, Antennas

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Proceedings Article | 10 July 2008 Paper

Toward a large telescope facility for submm/FIR astronomy at Dome C

Gilles Alphonse Durand, Vincent Minier, Pierre-Olivier Lagage, Emanuele Daddi, Samir El Khouloudi, Nicola Schneider-Bontemps, Michel Talvard, Christian Veyssière, Christian Walter, Lucia Sabbatini, Zalpha Challita, John W. Storey, Paolo Calisse, Alain Pierre, Maurizio Busso

Proceedings Volume 7012, 70122B (2008) https://doi.org/10.1117/12.789337

KEYWORDS: Telescopes, Space telescopes, Astronomy, Galactic astronomy, Stars, Mirrors, Atmospheric modeling, Large telescopes, Earth's atmosphere, Astronomical telescopes

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Proceedings Article | 6 July 2006 Paper

ArTeMiS: filled bolometer arrays for next-generation sub-mm telescopes

M. Talvard, P. André, L. Rodriguez, V. Minier, A. Benoit, B. Leriche, F. Pajot, L. Vigroux, P. Agnèse, O. Boulade, E. Doumayrou, D. Dubreuil, G. Durand, P. Gallais, B. Horeau, P. Lagage, J. Le-Pennec, M. Lortholary, J. Martignac, V. Revéret, N. Schneider, J. Stutzki, C. Veyssière, C. Walter

Proceedings Volume 6275, 627503 (2006) https://doi.org/10.1117/12.671133

KEYWORDS: Bolometers, Telescopes, Space telescopes, Cameras, Control systems, Stars, Galactic astronomy, Cryogenics, Detector arrays, Spatial resolution

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Showing 5 of 6 publications

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