Dr. Guy S. Perrin Profile

Dr. Guy S. Perrin

Astronomer/Professor at Observatoire de Paris à Meudon

SPIE Involvement:

Author

Publications (117)

Proceedings Article | 5 October 2023 Presentation + Paper

Presentation + Paper

Photonic spectro-interferometry with SCExAO/FIRST at the Subaru Telescope: towards Hα imaging of protoplanets

S. Vievard, E. Huby, M. Lallement, S. Lacour, O. Guyon, J. Lozi, K. Barjot, K. Ahn, G. Martin, N. Cvetojevic, F. Marchis, T. Kotani, C. Pham, C. Cassagnettes, A. Billat, G. Perrin, D. Rouan, G. Duchêne, N. Jovanovic, M. Tamura, S. Leon-Saval, V. Deo, H. D. Kenchington-Goldsmith, M. Fitzgerald, S. Sallum, B. Norris, C. Betters, P. Gatkine, J. Lin, Y. J. Kim

Proceedings Volume 12680, 126800H (2023) https://doi.org/10.1117/12.2676319

KEYWORDS: Telescopes, Single mode fibers, Optical path differences, Spectrographs, Photonic integrated circuits, Polarization, Microelectromechanical systems, Calibration, Visible radiation

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SPIE Journal Paper | 18 April 2023

Photonic beam-combiner for visible interferometry with Subaru coronagraphic extreme adaptive optics/fibered imager for a single telescope: laboratory characterization and design optimization

Manon Lallement, Elsa Huby, Sylvestre Lacour, Guillermo Martin, Kevin Barjot, Guy Perrin, Daniel Rouan, Vincent Lapeyrere, Sebastien Vievard, Olivier Guyon, Julien Lozi, Vincent Deo, Takayuki Kotani, Cecil Pham, Cedric Cassagnettes, Adrien Billat, Nick Cvetojevic, Franck Marchis

JATIS, Vol. 9, Issue 02, 025003, (April 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.025003

KEYWORDS: Waveguides, Photonic integrated circuits, Directional couplers, Design and modelling, Phase shifts, Interferometry, Beam combiners, Coronagraphy, Telescopes, Polarization

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

Photonic chip for visible interferometry: laboratory characterization and comparison with the theoretical model

Daniel Rouan, Vincent Lapeyrere, Julien Lozi, Takayuki Kotani, Cecil Pham, Cedric Cassagnettes, Adrien Billat, Manon Lallement, Guillermo Martin, Elsa Huby, Sylvestre Lacour, Kevin Barjot, Sébastien Vievard, Olivier Guyon, Nick Cvetojevic, Vincent Deo, Guy Perrin, Franck Marchis

Proceedings Volume 12188, 121882F (2022) https://doi.org/10.1117/12.2629449

KEYWORDS: Waveguides, Directional couplers, Photonic integrated circuits, Polarization, Phase shifts, Telescopes, Interferometry, Optical simulations, Single mode fibers

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Proceedings Article | 29 August 2022 Presentation

Presentation

A new era of interferometry with GRAVITY+

GRAVITY+ Collaboration, Guy Perrin

Proceedings Volume 12183, 1218307 (2022) https://doi.org/10.1117/12.2627920

KEYWORDS: Interferometry, Exoplanets, Spatial resolution, Microlens, Laser guide stars, Interferometers, Image resolution, High angular resolution imaging, Atmospheric sensing, Atmospheric optics

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Proceedings Article | 29 August 2022 Presentation

Presentation

Interferometric wavefront sensing at FIRST/SCExAO : self-calibrated fibered pupil-remapping spectrocopy using a metrology laser source

Sébastien Vievard, Vincent Deo, Elsa Huby, Sylvestre Lacour, Olivier Guyon, Kevin Barjot, Manon Lallement, Guillermo Martin, Takayuki Kotani, Nick Cvetojevic, Julien Lozi, Nour Skaf, Daniel Rouan, Franck Marchis, Guy Perrin, Kyohoon Ahn

Proceedings Volume 12183, 121830R (2022) https://doi.org/10.1117/12.2629299

KEYWORDS: Interferometry, Wavefront sensors, Telescopes, Metrology, Laser sources, Calibration, Spatial resolution, Optical fibers, Imaging systems, Coronagraphy

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Proceedings Article | 29 August 2022 Presentation

Presentation

First light of the upgraded FIRST visible fibered interferometer at the Subaru telescope (thesis)

Vincent Deo, Kevin Barjot, Elsa Huby, Sébastien Vievard, Manon Lallement, Sylvestre Lacour, Guillermo Martin, Nick Cvetojevic, Olivier Guyon, Julien Lozi, Takayuki Kotani, Cédric Cassagnettes, Adrien Billat, Franck Marchis, , Vincent Lapeyrère, Daniel Rouan

Proceedings Volume 12183, 121830E (2022) https://doi.org/10.1117/12.2630259

KEYWORDS: Telescopes, Visible radiation, Interferometers, Imaging spectroscopy, Stars, Waveguides, Visibility, Spectroscopy, Spectral resolution, Spatial resolution

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

GRAVITY faint: reducing noise sources in GRAVITY+ with a fast metrology attenuation system

Felix Widmann, Stefan Gillessen, Thomas Ott, Taro Shimizu, Frank Eisenhauer, Maximilian Fabricius, Julien Woillez, Frédéric Gonté, Matthew Horrobin, Jingyi Shangguan, Senol Yazici, Guy Perrin, Thibaut Paumard, Wolfgang Brandner, Laura Kreidberg, Christian Straubmeier, Karin Perraut, Jean-Baptiste Le Bouquin, Paulo Garcia, Sebastian Hönig, Denis Defrère, Guillaume Bourdarot, Antonia Drescher, Helmut Feuchtgruber, Reinhard Genzel, Michael Hartl, Dieter Lutz, Nikhil More, Christian Rau, Sinem Uysal, Ekkehard Wieprecht

Proceedings Volume 12183, 121830U (2022) https://doi.org/10.1117/12.2628813

KEYWORDS: Astronomical interferometers, Near infrared, Metrology, Laser metrology, Sensors, Signal to noise ratio, Backscatter, Telescopes, Fourier transforms, Stars, Diodes, Fiber couplers

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

GRAVITY+ Wide: towards hundreds of z ~ 2 AGN

Antonia Drescher, Maximilian Fabricius, Frank Haussmann, Christian Straubmeier, Matthew Horrobin, Julien Woillez, Pierre Bourget, Frank Eisenhauer, Felix Widmann, Jinyi Shangguan, Taro Shimizu, Stefan Gillessen, Sebastian Hönig, Jean-Baptiste Le Bouquin, Thibaut Paumard, Paulo Garcia, Laura Kreidberg, Nicolas Schuhler, Thomas Ott, Frederic Gonté, Guy Perrin, Wolfgang Brandner, Karine Perraut, Denis Defrère, Guillaume Bourdarot, Helmut Feuchtgruber, Reinhard Genzel, Michael Hartl, Dieter Lutz, Nikhil More, Christian Rau, Jonas Sauter, Sinem Uysal, Patrick Wessely, Ekkehard Wieprecht, Lukas Wimmer, Senol Yazici

Proceedings Volume 12183, 121830T (2022) https://doi.org/10.1117/12.2628921

KEYWORDS: Fourier transforms, Visibility, Mirrors, Stars, Atmospheric turbulence, Atmospheric modeling, Adaptive optics, Relays, Turbulence

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Proceedings Article | 1 September 2021 Presentation + Paper

Presentation + Paper

Very high resolution spectro-interferometry with wavefront sensing capabilities on Subaru/SCExAO using photonics

G. Duchêne, S. Vievard, T. Gretzinger, S. Gross, O. Guyon, E. Huby, N. Jovanovic, T. Kotani, S. Lacour, T. Lagadec, M. Lallement, V. Lapeyrere, M.-A. Martinod, B. Norris, G. Perrin, D. Rouan, K. Ahn, A. Arriola, K. Barjot, N. Cvetojevic, V. Deo, J. Lozi, F. Marchis, G. Martin, N. Skaf, P. Tuthill, M. Withford

Proceedings Volume 11823, 118230C (2021) https://doi.org/10.1117/12.2594840

KEYWORDS: Telescopes, Wavefront sensors, Single mode fibers, Stars, Optical fibers, Interferometry, Diffraction, Wavefronts, Spatial resolution, Photonics

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Proceedings Article | 15 January 2021 Poster + Paper

Poster + Paper

GRAVITY upgrade with high-performance grisms with factor >2 enhanced throughput

Senol Yazici, Takashi Sukegawa, Andreas Eckart, Martin Mayer, Frank Eisenhauer, Yukinobu Okura, Karine Perraut, Laurent Jocou, Stefan Gillessen, Frank Haussmann, Alexander Buron, David Huber, Lothar Barl, Kateryna Kravchenko, Oliver Pfuhl, Sylvestre Lacour, Vincent Lapeyrere, Erich Wiezorrek, Thomas Ott, Thibaut Paumard, Jinyi Shangguan, Feng Gao, Christian Straubmeier, Reinhard Genzel, Tim de Zeeuw, Michael Bauböck, Maryam Habibi, Christian Rau, Alejandra Jimenez Rosales, Julia Stadler, Odele Straub, Sebastiano von Fellenberg, Felix Widmann, Ekkehard Wieprecht, Eckhard Sturm, Guy Perrin, Antonio Amorim, Paolo Garcia, Wolfgang Brandner, Patricia Guajardo, Miguel Riquelme, Laurent Pallanca

Proceedings Volume 11446, 114461X (2021) https://doi.org/10.1117/12.2561387

KEYWORDS: Spectroscopy, Interferometry, Spectral resolution, Germanium, Phase interferometry, Image resolution, Zinc, Refractive index, Antireflective coatings, Optical properties

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Proceedings Article | 16 December 2020 Presentation + Paper

Presentation + Paper

The ExoGRAVITY project: using single mode interferometry to characterize exoplanets

A. Amorin, G. Perrin, C. Straubmeier, W. Brandner, K. Perraut, A.-M. Lagrange, R. Abuter, R. Asensio-Torres, M. Bauböck, M. Benisty, J. P. Berger, H. Beust, S. Blunt, A. Boccaletti, M. Bonnefoy, H. Bonnet, F. Cantalloube, P. Caselli, G. Chauvin, E. Choquet, V. Christiaens, Y. Clénet, A. Cridland, P. T. de Zeeuw, R. Dembet, J. Dexter, A. Drescher, G. Duvert, F. Gao, R. Garcia Lopez, T. Gardner, E. Gendron, R. Genzel, S. Gillessen, J. H. Girard, X. Haubois, G. Heißel, T. Henning, S. Hinkley, S. Hippler, M. Horrobin, M. Houllé, Z. Hubert, A. Jiménez-Rosales, L. Jocou, J. Kammerer, M. Keppler, P. Kervella, L. Kreidberg, V. Lapeyrère, J.-B. Le Bouquin, P. Léna, D. Lutz, A.-L. Maire, A. Mérand, J. D. Monnier, D. Mouillet, A. Muller, E. Nasedkin, T. Ott, C. Paladini, T. Paumard, J. Rameau, L. Rodet, G. Rodriguez-Coira, G. Rousset, T. Shimizu, J. Stadler, O. Straub, E. Sturm, T. Stolker, F. Vincent, S. D. von Fellenberg, K. Ward-Duong, E. Wieprecht, E. Wiezorrek, J. Woillez, P. Garcia, A. Bohn, S. Lacour, M. Nowak, F. Eisenhauer, J. Shangguan, O. Pfuhl, F. Widmann, E. van Dishoeck, P. Mollière, A. Vigan, G. P. P. L. Otten, B. Charnay, J. Wang, L. Pueyo

Proceedings Volume 11446, 114460O (2020) https://doi.org/10.1117/12.2561667

KEYWORDS: Interferometry, Exoplanets

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Proceedings Article | 13 December 2020 Presentation

Presentation

First four telescopes large-separation off-axis fringe-tracking interferometry with GRAVITY at the VLTI

Guy Perrin, Wolfgang Brandner, Thibaut Paumard, Karine Perraut, Paulo J. Garcia, Christian Straubmeier, António Amorim, Thomas Ott, Felix Widmann, Jinyi Shangguan, Odèle Straub, Sebastiano von Fellenberg, Eckhard Sturm, Oliver Pfuhl, Michi Bauboeck, Alejandra Jimenez-Rosales, Feng Gao, Frank Eisenhauer, Julien Woillez, Pierre Bourget, Bruno Chazelas, Roderick Dembet, Frédéric Gonté, Jürgen Ott, Nicolas Schuhler, Gérard Zins, Frank Haussmann, Michael Hartl, Stefan Gillessen, Reinhard Genzel, Matthew Horrobin, Julia Stadler, Dieter Lutz, Taro Shimizu, Antonia Drescher, Mari Lena Bolzer

Proceedings Volume 11446, 114461I (2020) https://doi.org/10.1117/12.2561408

KEYWORDS: Telescopes, Interferometry, Interferometers, Atmospheric turbulence, Optical interferometry, Large telescopes, Stars

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Proceedings Article | 13 December 2020 Presentation

Presentation

Polarization analysis of GRAVITY and the VLTI

Felix Widmann, Frank Eisenhauer, Oliver Pfuhl, Nicolas Schuhler, Xavier Haubois, António Amorim, Michi Bauböck, Wolfgang Brandner, Jason Dexter, Feng Gao, Reinhard Genzel, Stefan Gillessen, Alejandra Jimenez-Rosales, Sylvestre Lacour, Thomas Ott, Karine Perraut, Guy Perrin, Jinyi Shangguan, Odèle Straub, Christian Straubmeier, Eckhard Sturm, Sebastiano von Fellenberg, Paulo J. Garcia

Proceedings Volume 11446, 114460S (2020) https://doi.org/10.1117/12.2559311

KEYWORDS: Polarization, Data modeling, Polarization analysis, Calibration, Signal attenuation, Birefringence, Polarimetry, Telescopes, Mirrors, Device simulation

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

FIRST, a pupil-remapping fiber interferometer at the Subaru Telescope: on-sky results

S. Vievard, E. Huby, N. Cvetojevic, S. Lacour, G. Martin, O. Guyon, J. Lozi, T. Kotani, N. Jovanovic, G. Perrin, F. Marchis, G. Duchêne, V. Lapeyrere, D. Rouan, K. Barjot, V. Deo

Proceedings Volume 11446, 1144629 (2020) https://doi.org/10.1117/12.2563033

KEYWORDS: Telescopes, Adaptive optics, Interferometers, Imaging systems, Single mode fibers, Interferometry, Spatial filters, Optical instrument design, Diffraction, Speckle

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Laboratory characterization of FIRSTv2 photonic chip for the study of substellar companions

K. Barjot, E. Huby, V. Deo, S. Vievard, N. Cvetojevic, S. Lacour, G. Martin, O. Guyon, J. Lozi, N. Jovanovic, G. Perrin, F. Marchis, G. Duchêne, T. Kotani, V. Lapeyrere, D. Rouan, C. Cassagnettes

Proceedings Volume 11446, 1144623 (2020) https://doi.org/10.1117/12.2561713

KEYWORDS: Telescopes, Imaging spectroscopy, Single mode fibers, Visible radiation, Interferometry, Microelectromechanical systems, Fiber characterization, Imaging systems, Spectroscopes, Diffraction

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Proceedings Article | 10 July 2018 Presentation

Presentation

FIRST, the pupil-remapping fiber interferometer at Subaru telescope: towards photonic beam-combination with phase control and on-sky commissioning results (Conference Presentation)

Nick Cvetojevic, Elsa Huby, Guillermo Martin, Sylvestre Lacour, Franck Marchis, Julien Lozi, Nemanja Jovanovic, Olivier Guyon, Lucien Gauchet, Guy Perrin, Gaspard Duchêne, Takayuki Kotani, Sébastien Vievard

Proceedings Volume 10701, 107010A (2018) https://doi.org/10.1117/12.2313262

KEYWORDS: Telescopes, Interferometers, Beam controllers, Imaging spectroscopy, Spatial filters, Interferometry, Binary data, Photonic crystals, Imaging systems, Spectroscopes

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FIRST (Fibered Imager foR a Single Telescope) is a post-AO instrument module that enables high-contrast imaging and spectroscopy at sub-diffraction limited spatial scales. FIRST achieves this through a unique combination of sparse aperture masking, spatial filtering, pupil remapping Fizeau interferometry, and cross-dispersion in the visible. The telescope pupil is divided into sub-pupils using a honeycomb array of micro-electro-mechanical mirrors, and the light from each sub-pupil injected into a separate single mode fiber that provides spatial filtering. The fibers, which are pathlength-matched to within a few tens of micrometers, reformat the sub-apertures into a linear non-redundant array allowing for the extraction of fringes from each possible baseline as well as wavelength dispersion to create ~130 spectral channels for every baseline combination over the 600-900nm spectral range. In this presentation, we will first report on the latest on-sky results obtained with FIRST. In its current design, the instrument was successfully integrated on the 3-m telescope at Lick Observatory and is now a module of the SCExAO extreme adaptive optics instrument on the 8-m Subaru Telescope. The latest on-sky results obtained from commissioning data show the detection of the stellar companion of the Alpha Equu binary system at an angular separation of 0.6 λ/D (11mas). Even at such a separation, the FIRST data delivers information on the companion spectrum, providing valuable constraints on the stellar parameters of the system such as the effective temperatures. The second part of this presentation will focus on the ongoing instrument upgrades with the aim of increasing the instrument’s stability and sensitivity, thus improving the dynamic range. We initiated a comprehensive upgrade of FIRST’s interferometric components to a new series of photonic on-chip beam combiners and automated optoelectronic delay lines for rapid phasing of each sub-pupil. The new photonic beam combining chips split light from each sub-aperture and combines them to provide a simultaneous measurement of the fringes from every baseline. Another function of the new photonic chips is the inclusion of waveguides in crystalline electro-optic material (Lithium niobate) that enable on-chip active phase control of the light at high speeds (up to kHz). This type of photonic architecture has not been implemented previously for astronomical interferometry of this kind and could potentially provide FIRST with key advantages (see Martin et al., these proceedings). While the beam-combiner output no longer requires non-redundancy, the fiber array that feeds the chip input still requires accurate pathlength-matching to achieve high fringe contrasts. The existing fibers were individually manufactured to ensure identical length. However, while this method was successful, it was not very flexible particularly if any photonic components are added that change the overall fiber length. Thus, another key FIRST upgrade is the use of actively controlled fiber delay lines capable of compensating for up to 100 mm of differential pathlength in each fiber, with sub-micron accuracy. This type of active pathlength control allows FIRST to not only correct for unwanted environmental phase delays, but also makes it entirely reconfigurable regardless of the back-end photonics used.

Proceedings Article | 10 July 2018 Presentation

Presentation

Data reduction of the VLTI/GRAVITY interferometric instrument (Conference Presentation)

Vincent Lapeyrère, Pierre Kervella, Jean-Baptiste Le Bouquin, Sylvestre Lacour, Cesar Enrique Garcia-Dabó, Antoine Mérand, Julien Woillez, Guy Perrin, Frank Eisenhauer, Karine Perraut, Christian Straubmeier, António Amorim, Wolfgang Brandner

Proceedings Volume 10701, 107011F (2018) https://doi.org/10.1117/12.2314239

KEYWORDS: Interferometry, Fourier transforms, Information operations, Phase measurement, Algorithm development, Software development, Telescopes, Interferometers, Integrated optics, Signal processing

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Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

The GRAVITY fringe tracker: correlation between optical path residuals and atmospheric parameters

S. Lacour, R. Dembet, R. Abuter, P. Fedou, G. Perrin, F. Eisenhauer, K. Perraut, C. Straubmeier, W. Brandner, A. Amorim

Proceedings Volume 10701, 1070107 (2018) https://doi.org/10.1117/12.2313004

KEYWORDS: Atmospheric optics, Optical tracking, Fourier transforms, Astronomy, Stars, Physics, Telescopes, Calibration, Observatories

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Proceedings Article | 9 July 2018 Open Access

Open Access

Presentation + Paper

Learnings from the use of fiber optics in GRAVITY

Magdalena Lippa, Nicolas Blind, Stefan Gillessen, Yitping Kok, Oliver Pfuhl, Marcus Haug, Stefan Kellner, Ekkehard Wieprecht, Frank Eisenhauer, Reinhard Genzel, Frank Haußmann, Thomas Ott, Markus Plattner, Christian Rau, Eckhard Sturm, Erich Wiezorrek, Alexander Buron, Guy Perrin, Karine Perraut, Wolfgang Brandner, Christian Straubmeier, Antonio Amorim, Sylvestre Lacour, Laurent Jocou, Oliver Hans

Proceedings Volume 10701, 107011Y (2018) https://doi.org/10.1117/12.2312477

KEYWORDS: Metrology, Connectors, Polarization, Backscatter, Fiber lasers, Raman scattering, Laser metrology, Luminescence, Fiber optics, Glasses

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Proceedings Article | 9 July 2018 Paper

Paper

Correction of differential chromatic dispersion in GRAVITY

Xavier Haubois, Sylvestre Lacour, Guy Perrin, Roderick Dembet, Jean-Baptiste Le Bouquin, Vincent Lapeyrère, Burkhard Wolff, Frank Eisenhauer, Karine Rousselet-Perraut, Christian Straubmeier, Antonio Amorim, Wolfgang Brandner

Proceedings Volume 10701, 107011P (2018) https://doi.org/10.1117/12.2312154

KEYWORDS: Optical fibers, Fourier transforms, Phase measurement, Dispersion, Metrology, K band, Calibration, Refractive index

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Proceedings Article | 9 July 2018 Open Access

Open Access

Paper

Improving GRAVITY towards observations of faint targets

Felix Widmann, Frank Eisenhauer, Stefan Gillessen, Guy Perrin, Wolfgang Brandner, Christian Straubmeier, Karin Perraut, Antonio Amorim, Markus Schöller, Feng Gao, Reinhard Genzel, Idel Waisberg, Sylvestre Lacour, Magdalena Lippa, Thomas Ott, Philipp Plewa, Oliver Pfuhl, Martina Karl

Proceedings Volume 10701, 107010K (2018) https://doi.org/10.1117/12.2312118

KEYWORDS: Signal to noise ratio, Calibration, Data modeling, Systems modeling, Telescopes, Atmospheric modeling, Interferometers, Interferometry

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Proceedings Article | 4 August 2016 Paper

Paper

GRAVITY acquisition camera: characterization results

Narsireddy Anugu, Antonio Amorim, Paulo Garcia, Erich Wiezorrek, Frank Eisenhauer, Thomas Ott, Oliver Pfuhl, Karine Perraut, Wolfgang Brandner, Christian Straubmeier, Paulo Gordo, Ekkehard Wieprecht, Guy Perrin

Proceedings Volume 9907, 990727 (2016) https://doi.org/10.1117/12.2233315

KEYWORDS: Stars, Cameras, Telescopes, Optical tracking, Imaging systems, Sensors, Electroluminescent displays, Image sensors, Actuators, Mirrors

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Proceedings Article | 4 August 2016 Paper

Paper

Astronomical photonics in the context of infrared interferometry and high-resolution spectroscopy

Jean-Philippe Berger, Sylvestre Lacour, Guillermo Martin, Stefano Minardi, Guy Perrin, Martin Roth, Robert Thomson, Roger Haynes, Robert Harris, Nemanja Jovanovic, Lucas Labadie, Nick Cvetojevic

Proceedings Volume 9907, 990718 (2016) https://doi.org/10.1117/12.2230889

KEYWORDS: Astrophotonics, Interferometry, Photonics, Astronomy, Waveguides, Glasses, Dispersion, Mid-IR, Integrated optics, Wave propagation

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Proceedings Article | 4 August 2016 Open Access

Open Access

Paper

The metrology system of the VLTI instrument GRAVITY

Magdalena Lippa, Stefan Gillessen, Nicolas Blind, Yitping Kok, Johannes Weber, Oliver Pfuhl, Stefan Kellner, Ekkehard Wieprecht, Frank Eisenhauer, Reinhard Genzel, Oliver Hans, Frank Haußmann, David Huber, Tobias Kratschmann, Thomas Ott, Markus Plattner, Karine Perraut, Christian Straubmeier, Antonio Amorim, Wolfgang Brandner, Marcus Haug, Christian Rau, Eckhard Sturm, Idel Waisberg, Erich Wiezorrek, Şenol Yazıcı, Guy Perrin

Proceedings Volume 9907, 990722 (2016) https://doi.org/10.1117/12.2232272

KEYWORDS: Metrology, Telescopes, Signal detection, Laser metrology, Sensors, Beam splitters, Phase shifts, Phase measurement, Receivers, Diodes

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Proceedings Article | 27 July 2016 Paper

Paper

System tests and on-sky commissioning of the GRAVITY-CIAO wavefront sensors

C. Deen, W. Brandner, H. Bonnet, P. Bourget, Y. Clenét, E. Gendron, S. Oberti, J. Kolb, Z. Hubert, L. Pettazzi, P. Haguenauer, G. Zins, R. Klein, R. Lenzen, J. Panduro, J. Ramos, Udo Neumann, M. Kulas, R.-R. Rohloff, K. Perraut, G. Perrin, C. Straubmeier, A. Amorim, E. Müller, S. Scheithauer, A. Huber, M. Suarez-Valles, F. Delplancke, F. Eisenhauer, M. Esselborn, T. Henning

Proceedings Volume 9909, 99092M (2016) https://doi.org/10.1117/12.2233005

KEYWORDS: Wavefront sensors, Telescopes, Adaptive optics, Stars, Infrared radiation, Mirrors, Control systems, Mendelevium, Matrices, Shape memory alloys

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Proceedings Article | 28 August 2014 Paper

Paper

CubeSats as pathfinders for planetary detection: the FIRST-S satellite

X. Haubois, S. Lacour, G. Martin, L. Gauchet, G. Perrin, V. Lapeyrère, S. Heidmann, S. Arroud, R. Gourgues

Proceedings Volume 9143, 91432N (2014) https://doi.org/10.1117/12.2057381

KEYWORDS: Interferometers, Modulation, Stars, Space operations, Nulling interferometry, Satellites, Space telescopes, Lithium niobate, Interferometry, Information operations

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Proceedings Article | 7 August 2014 Paper

Paper

Adaptive optics at the Subaru telescope: current capabilities and development

Naruhisa Takato, Ben Mazin, Olivier Guyon, Yutaka Hayano, Motohide Tamura, Tomoyuki Kudo, Shin Oya, Yosuke Minowa, Olivier Lai, Nemanja Jovanovic, Jeremy Kasdin, Tyler Groff, Masahiko Hayashi, Nobuo Arimoto, Hideki Takami, Colin Bradley, Hajime Sugai, Guy Perrin, Peter Tuthill

Proceedings Volume 9148, 91481R (2014) https://doi.org/10.1117/12.2057273

KEYWORDS: Telescopes, Adaptive optics, Cameras, Exoplanets, Spectrographs, Imaging spectroscopy, Imaging systems, Visible radiation, Coronagraphy, Wavefront sensors

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Proceedings Article | 7 August 2014 Paper

Paper

Integration and bench testing for the GRAVITY Coudé IR adaptive optics (CIAO) wavefront sensor

C. Deen, S. Hippler, W. Brandner, M. Suarez-Valles, Y. Clénet, E. Gendron, A. Huber, S. Kendrew, R. Klein, W. Laun, R. Lenzen, U. Neumann, J. Ramos, R.-R. Rohloff, P. Yang, N. Zimmerman, A. Glauser, F. Eisenhauer, J. Panduro, A. Salzinger, K. Perraut, G. Perrin, C. Straubmeier, A. Amorim, T. Henning

Proceedings Volume 9148, 91482T (2014) https://doi.org/10.1117/12.2055127

KEYWORDS: Adaptive optics, Sensors, Wavefront sensors, Computing systems, Mirrors, Real-time computing, Infrared radiation, Infrared sensors, Deformable mirrors, Telescopes

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Proceedings Article | 28 July 2014 Paper

Paper

The GRAVITY spectrometers: design report of the optomechanics and active cryogenic mechanisms

Michael Wiest, Senol Yazici, Sebastian Fischer, Markus Thiel, Marcus Haug, Constanza Araujo-Hauck, Christian Straubmeier, Imke Wank, Frank Eisenhauer, Guy Perrin, Wolfgang Brandner, Karine Perraut, Antonio Amorim, Markus Schöller, Andreas Eckart

Proceedings Volume 9147, 91472M (2014) https://doi.org/10.1117/12.2056703

KEYWORDS: Spectrometers, Computer aided design, Optical design, Optical components, Feedback control, Mechanical engineering, Optomechanical design, Cryogenic mechanisms, Spectral resolution, Image resolution

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Proceedings Article | 24 July 2014 Paper

Paper

The GRAVITY spectrometers: optical design and first light

Christian Straubmeier, Michael Wiest, Senol Yazici, Frank Eisenhauer, Guy Perrin, Andreas Eckart, Karine Perraut, Wolfgang Brandner, Antonio Amorim, Sebastian Fischer, Imke Wank, Markus Schöller

Proceedings Volume 9146, 914629 (2014) https://doi.org/10.1117/12.2054736

KEYWORDS: Spectrometers, Integrated optics, Spectral resolution, Metrology, Prisms, Sensors, Polarization, Channel projecting optics, Detector arrays, Laser metrology

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Proceedings Article | 24 July 2014 Paper

Paper

The fiber coupler and beam stabilization system of the GRAVITY interferometer

O. Pfuhl, M. Haug, F. Eisenhauer, S. Kellner, F. Haussmann, G. Perrin, S. Gillessen, C. Straubmeier, T. Ott, K. Rousselet-Perraut, A. Amorim, Magdalena Lippa, A. Janssen, W. Brandner, Yitping Kok, N. Blind, L. Burtscher, E. Sturm, E. Wieprecht, M. Schoeller, J. Weber, O. Hans, S. Huber

Proceedings Volume 9146, 914623 (2014) https://doi.org/10.1117/12.2055080

KEYWORDS: Telescopes, Fiber couplers, Actuators, Mirrors, Prisms, Adaptive optics, Sensors, Cameras, Stars, Interferometers

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Proceedings Article | 24 July 2014 Paper

Paper

The GRAVITY spectrometers: thermal behaviour

Markus Schöller, Imke Wank, Christian Straubmeier, Sebastian Fischer, Michael Wiest, Senol Yazici, Frank Eisenhauer, Guy Perrin, Andreas Eckart, Karine Perraut, Wolfgang Brandner, Antonio Amorim

Proceedings Volume 9146, 914628 (2014) https://doi.org/10.1117/12.2055088

KEYWORDS: Spectrometers, Brain-machine interfaces, Copper, Nitrogen, Computer aided design, Temperature sensors, Interferometry, Infrared radiation, Solid modeling, Cameras

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Proceedings Article | 24 July 2014 Paper

Paper

GRAVITY: the calibration unit

O. Hans, S. Huber, J. Weber, N. Blind, F. Eisenhauer, M. Haug, Magdalena Lippa, S. Kellner, F. Haussmann, O. Pfuhl, A. Amorim, W. Brandner, K. Perraut, G. Perrin, C. Straubmeier, S. Gillessen, Y. Kok, L. Burtscher, T. Ott, E. Wieprecht, E. Sturm, A. Janssen

Proceedings Volume 9146, 91461U (2014) https://doi.org/10.1117/12.2055542

KEYWORDS: Calibration, Mirrors, Telescopes, Stars, Metrology, Wavefronts, Light sources, Relays, Optical alignment, Safety

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Proceedings Article | 24 July 2014 Paper

Paper

Phase tracking with differential dispersion

Xavier Haubois, Sylvestre Lacour, Guy Perrin, Roderick Dembet, Pierre Fedou, Karine Rousselet-Perraut, Christian Straubmeier, Antonio Amorim, Wolfgang Brandner, Frank Eisenhauer

Proceedings Volume 9146, 91461Y (2014) https://doi.org/10.1117/12.2056410

KEYWORDS: Optical fibers, Refractive index, Phase measurement, K band, Dispersion, Detection and tracking algorithms, Colorimetry, Fourier transforms, Humidity, Optical tracking

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Proceedings Article | 24 July 2014 Paper

Paper

The GRAVITY metrology system: modeling a metrology in optical fibers

L. Burtscher, N. Blind, Heinrich Huber, F. Eisenhauer, J. Weber, S. Gillessen, M. Lippa, A. Amorim, W. Brandner, K. Perraut, G. Perrin, C. Straubmeier, Y. Kok, A. Janssen, O. Pfuhl, O. Hans, S. Kellner, E. Sturm, M. Haug, F. Haussmann, S. Huber, T. Ott, E. Wieprecht

Proceedings Volume 9146, 914624 (2014) https://doi.org/10.1117/12.2055553

KEYWORDS: Metrology, Phase modulation, Polarization, Waveguides, Polarizers, Cameras, Connectors, Temperature metrology, Birefringence, Laser metrology

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Proceedings Article | 24 July 2014 Paper

Paper

The beam combiners of Gravity VLTI instrument: concept, development, and performance in laboratory

A. Nolot, L. Jocou, K. Perraut, T. Moulin, Y. Magnard, P. Labeye, V. Lapras, G. Perrin, F. Eisenhauer, C. Holmes, A. Amorim, W. Brandner, C. Straubmeier

Proceedings Volume 9146, 91461J (2014) https://doi.org/10.1117/12.2054159

KEYWORDS: Information operations, Interferometry, Integrated optics, K band, Waveguides, Metrology, Modulation, Telescopes, Fourier transforms, Sensors

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Proceedings Article | 24 July 2014 Paper

Paper

The interferometric baselines and GRAVITY astrometric error budget

S. Lacour, H. Bonnet, K. Rousselet-Perraut, C. Straubmeier, A. Amorin, G. Perrin, F. Eisenhauer, W. Brandner, S. Gillessen, O. Pfuhl, Y. Kok, J. Woillez

Proceedings Volume 9146, 91462E (2014) https://doi.org/10.1117/12.2057366

KEYWORDS: Metrology, Telescopes, Interferometry, Stars, Interferometers, Space telescopes, Observatories, Optical testing, Mirrors, 3D metrology

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Proceedings Article | 24 July 2014 Paper

Paper

Integration and testing of the GRAVITY infrared camera for multiple telescope optical beam analysis

Paulo Gordo, Antonio Amorim, Frank Eisenhauer, Paulo Garcia, Narsireddy Anugu, Oliver Pfuhl, Jorge Abreu, Marcus Haug, Eckhard Sturm, Ekkehard Wieprecht, Guy Perrin, Wolfgang Brandner, Christian Straubmeier, Karine Perraut, M. Duarte Naia, M. Guimarães

Proceedings Volume 9146, 91461V (2014) https://doi.org/10.1117/12.2056572

KEYWORDS: Cameras, Telescopes, Beam analyzers, Sensors, Optical alignment, Optics manufacturing, Mirrors, Imaging systems, Silica, Beam splitters

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Proceedings Article | 24 July 2014 Paper

Paper

GRAVITY data reduction software

V. Lapeyrere, P. Kervella, S. Lacour, N. Azouaoui, C. Garcia-Dabo, G. Perrin, F. Eisenhauer, K. Perraut, C. Straubmeier, A. Amorim, W. Brandner

Proceedings Volume 9146, 91462D (2014) https://doi.org/10.1117/12.2056850

KEYWORDS: Calibration, Visibility, Fourier transforms, Metrology, Target acquisition, Phase measurement, Data modeling, Cameras, Interferometry, Spectroscopy

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Proceedings Article | 24 July 2014 Paper

Paper

Telescope birefringence and phase errors in the Gravity instrument at the VLT interferometer

B. Lazareff, N. Blind, L. Jocou, F. Eisenhauer, F. Delplancke, M. Schoeller, A. Amorim, W. Brandner, K. Perraut, G. Perrin, C. Straubmeier, S. Lacour

Proceedings Volume 9146, 91460X (2014) https://doi.org/10.1117/12.2056304

KEYWORDS: Polarization, Mirrors, Birefringence, Sensors, Telescopes, Fourier transforms, Interferometers, Polarimetry, Error analysis, Interferometry

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Proceedings Article | 24 July 2014 Paper

Paper

New method for path-length equalization of long single-mode fibers for interferometry

J. Monnier, M. Anderson, K. Ozdowy, J. Woillez, G. Perrin

Proceedings Volume 9146, 91461L (2014) https://doi.org/10.1117/12.2057289

KEYWORDS: Optical fibers, Fiber optics, Composites, Resistance, Interferometry, Temperature metrology, Copper, Interferometers, Fiber optics tests, Control systems

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Proceedings Article | 24 July 2014 Open Access

Open Access

Paper

The GRAVITY instrument software/hardware related aspects

Roberto Abuter, Thomas Ott, Ekkehard Wieprecht, Leonard Burtscher, Yitping Kok, Senol Yazici, Narsireddy Anugu, Roderick Dembet, Pierre Fedou, Sylvestre Lacour, Jürgen Ott, Frank Eisenhauer, Nicolas Blind, Stefan Gillessen, Oliver Hans, Marcus Haug, Frank Haussmann, Stefan Huber, Annemieke Janssen, Stefan Kellner, Magdalena Lippa, Oliver Pfuhl, Eckhard Sturm, Johannes Weber, Antonio Amorim, Wolfgang Brandner, Karine Rousselet-Perraut, Guy Perrin, Christian Straubmeier, Markus Schöller, Reinhard Genzel

Proceedings Volume 9146, 91462A (2014) https://doi.org/10.1117/12.2055927

KEYWORDS: Sensors, Lamps, Camera shutters, Control systems, Analog electronics, Metrology, Detection and tracking algorithms, Optical fibers, Fiber lasers, Laser metrology

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Proceedings Article | 24 July 2014 Open Access

Open Access

Paper

GRAVITY: the impact of non-common optical paths within the metrology system

Johannes Weber, Frank Eisenhauer, Sylvestre Lacour, Nicolas Blind, Magdalena Lippa, Oliver Pfuhl, Leonard Burtscher, Thomas Ott, Ekkehard Wieprecht, Eckhard Sturm, Marcus Haug, Stefan Kellner, Frank Haussmann, Annemieke Janssen, Reinhard Genzel, Guy Perrin, Karine Perraut, Wolfgang Brandner, Christian Straubmeier, Antonio Amorim, Yitping Kok, Stefan Gillessen, Oliver Hans

Proceedings Volume 9146, 914625 (2014) https://doi.org/10.1117/12.2055567

KEYWORDS: Metrology, Stars, Laser metrology, Interferometers, Telescopes, Information operations, Visibility, Sensors, Phase shifts, Time metrology

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Proceedings Article | 24 July 2014 Paper

Paper

The GRAVITY spectrometers: optical qualification

Senol Yazici, Christian Straubmeier, Sebastian Fischer, Imke Wank, Michael Wiest, Frank Eisenhauer, Guy Perrin, Andreas Eckart, Karine Perraut, Wolfgang Brandner, Antonio Amorim, Matthew Horrobin, Markus Schöller

Proceedings Volume 9146, 914627 (2014) https://doi.org/10.1117/12.2055313

KEYWORDS: Spectrometers, Sensors, Information operations, Image resolution, High dynamic range imaging, Channel projecting optics, Telescopes, Cameras, Polarization, Spectral resolution

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GRAVITY¹ is a 2^nd generation Very Large Telescope Interferometer (VLTI) operated in the astronomical K-band. In the Beam Combiner Instrument² (BCI) four Fiber Couplers³ (FC) will feed the light coming from each telescope into two fibers, a reference channel for the fringe tracking spectrometer⁴ (FT) and a science channel for the science spectrometer⁴ (SC). The differential Optical Path Difference (dOPD) between the two channels will be corrected using a novel metrology concept.⁵ The metrology laser will keep control of the dOPD of the two channels. It is injected into the spectrometers and detected at the telescope level. Piezo-actuated fiber stretchers correct the dOPD accordingly. Fiber-fed Integrated Optics⁶ (IO) combine coherently the light of all six baselines and feed both spectrometers. Assisted by Infrared Wavefront Sensors⁷ (IWS) at each Unit Telescope (UT) and correcting the path difference between the channels with an accuracy of up to 5 nm, GRAVITY will push the limits of astrometrical accuracy to the order of 10 μas and provide phase-referenced interferometric imaging with a resolution of 4 mas. The University of Cologne developed, constructed and tested both spectrometers of the camera system. Both units are designed for the near infrared (1.95 - 2.45 μm) and are operated in a cryogenic environment. The Fringe Tracker is optimized for highest transmission with fixed spectral resolution (R = 22) realized by a double-prism.⁸ The Science spectrometer is more diverse and allows to choose from three different spectral resolutions⁸ (R = [22, 500, 4000]), where the lowest resolution is achieved with a prism and the higher resolutions are realized with grisms. A Wollaston prism in each spectrometer allows for polarimetric splitting of the light. The goal for the spectrometers is to concentrate at least 90% of the ux in 2 × 2 pixel (36 × 36 μm²) for the Science channel and in 1 pixel (24 × 24 μm) in the Fringe Tracking channel. In Section 1, we present the arrangement, direction of spectral dispersion and shift of polarization channels for both spectrometers, and the curvature of the spectra in the science spectrometer. In Section 2 we determine the best focus position of the detectors. The overall contrast of images at different positions of the detector stage is computed with the standard deviation of pixel values in the spectra containing region. In Section 3 we analyze high dynamic range images for each spectrometer and resolution obtained at the afore determined best focus positions. We deduce the ensquared energy from the FWHM of Gaussian fits perpendicular to the spectra.

Proceedings Article | 24 July 2014 Open Access

Open Access

Paper

The GRAVITY instrument software/high-level software

Reinhard Genzel, Roberto Abuter, Leonard Burtscher, Ekkehard Wieprecht, Thomas Ott, Yitping Kok, Senol Yazici, Narsireddy Anugu, Roderick Dembet, Pierre Fedou, Sylvestre Lacour, Jürgen Ott, Frank Eisenhauer, Nicolas Blind, Stefan Gillessen, Oliver Hans, Marcus Haug, Frank Haussmann, Stefan Kellner, Magdalena Lippa, Oliver Pfuhl, Eckhard Sturm, Johannes Weber, Antonio Amorim, Wolfgang Brandner, Karine Rousselet-Perraut, Guy Perrin, Christian Straubmeier, Markus Schöller, Thibaut Paumard, Vincent Lapeyrere, Pierre Kervella, Eszter Pozna

Proceedings Volume 9146, 91462B (2014) https://doi.org/10.1117/12.2055928

KEYWORDS: Sensors, Process control, Control systems, Cameras, Telescopes, Signal detection, Data acquisition, Computing systems, Interferometers, Interfaces

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Proceedings Article | 24 July 2014 Open Access

Open Access

Paper

The GRAVITY metrology system: narrow-angle astrometry via phase-shifting interferometry

Nicolas Blind, Stefan Gillessen, Yitping Kok, Johannes Weber, Frank Eisenhauer, Oliver Pfuhl, Annemieke Janssen, Marcus Haug, Frank Haußmann, Stefan Kellner, Oliver Hans, Ekkehard Wieprecht, Thomas Ott, Leonard Burtscher, Eckhard Sturm, Reinhard Genzel, Reiner Hofmann, S. Huber, David Huber, Stefanie Senftleben, Andreas Pflüger, Roland Greßmann, Guy Perrin, Karine Perraut, Wolfgang Brandner, Christian Straubmeier, Antonio Amorim, Markus Schöller, Magdalena Lippa

Proceedings Volume 9146, 914622 (2014) https://doi.org/10.1117/12.2054637

KEYWORDS: Phase shifts, Metrology, Phase shift keying, Calibration, Telescopes, Modulation, Phase interferometry, Interferometers, Interferometry, Phase measurement

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Proceedings Article | 24 July 2014 Paper

Paper

The GRAVITY/VLTI acquisition camera software

Narsireddy Anugu, Paulo J. Garcia, Ekkehard Wieprecht, Leonard Burtscher, Thomas Ott, Antonio Amorim, Paulo Gordo, Frank Eisenhauer, Guy Perrin, Wolfgang Brandner, Christian Straubmeier, Karine Perraut

Proceedings Volume 9146, 91462C (2014) https://doi.org/10.1117/12.2055831

KEYWORDS: Imaging systems, Cameras, Telescopes, Sensors, Image sensors, Refraction, Stars, Wavefronts, Device simulation, Databases

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Proceedings Article | 21 July 2014 Paper

Paper

Near-infrared aberration tracking using a correlation algorithm on the Galactic Center

Narsireddy Anugu, Paulo Garcia, Antonio Amorim, Paulo Gordo, Frank Eisenhauer, Guy Perrin, Wolfgang Brandner, Christian Straubmeier, Karine Perraut

Proceedings Volume 9148, 91485B (2014) https://doi.org/10.1117/12.2055869

KEYWORDS: Sensors, Wavefronts, Image sensors, Wavefront sensors, Telescopes, Reconstruction algorithms, Detection and tracking algorithms, Electroluminescent displays, Adaptive optics, Wavefront aberrations

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Proceedings Article | 8 July 2014 Paper

Paper

Development and recent results from the Subaru coronagraphic extreme adaptive optics system

J. White, N. Jovanovic, O. Guyon, F. Martinache, C. Clergeon, G. Singh, T. Kudo, K. Newman, J. Kuhn, E. Serabyn, B. Norris, P. Tuthill, P. Stewart, E. Huby, G. Perrin, S. Lacour, S. Vievard, N. Murakami, O. Fumika, Y. Minowa, Y. Hayano, F. Marchis, G. Duchene, T. Kotani, J. Woillez, O. Lai

Proceedings Volume 9147, 91471Q (2014) https://doi.org/10.1117/12.2057249

KEYWORDS: Wavefront sensors, Point spread functions, Coronagraphy, Adaptive optics, Wavefronts, Speckle, Cameras, Deformable mirrors, Sensors, Imaging systems

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Proceedings Article | 24 September 2012 Paper

Paper

The GRAVITY Coudé Infrared Adaptive Optics (CIAO) system for the VLT Interferometer

Udo Neumann, Enrico Fedrigo, Marcos Suarez Valles, S. Hippler, G. Perrin, W. Brandner, Y. Clénet, R. Klein, E. Gendron, R.-R. Rohloff, V. Naranjo, R. Lenzen, A. Amorim, J. Ramos, C. Straubmeier, K. Perraut, C. Deen, W. Laun, A. Huber, P. Yang, F. Eisenhauer, S. Kendrew

Proceedings Volume 8446, 84467W (2012) https://doi.org/10.1117/12.926558

KEYWORDS: Adaptive optics, Wavefront sensors, Sensors, Stars, Telescopes, Monte Carlo methods, Interferometers, Infrared radiation, Wavefronts, Near infrared

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Proceedings Article | 24 September 2012 Paper

Paper

FIRST - a fibered aperture masking instrument: on-sky results

Julien Woillez, Olivier Lai, Takayuki Kotani, Gaspard Duchêne, Elodie Choquet, Sylvestre Lacour, Guy Perrin, Elsa Huby, Franck Marchis, Elinor Gates

Proceedings Volume 8446, 84461Z (2012) https://doi.org/10.1117/12.925615

KEYWORDS: Telescopes, Prototyping, Diffraction, Phase measurement, Adaptive optics, Observatories, Stars, Optical fibers, Speckle, Calibration

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Proceedings Article | 12 September 2012 Paper

Paper

The GRAVITY spectrometers: system design

I. Wank, S. Fischer, W. Brandner, K. Perraut, A. Amorim, A. Eckart, M. Wiest, F. Eisenhauer, C. Araujo-Hauck, S. Yazici, G. Perrin, M. Schöller, C. Straubmeier

Proceedings Volume 8445, 84451W (2012) https://doi.org/10.1117/12.925289

KEYWORDS: Spectrometers, Sensors, Integrated optics, Metrology, Laser metrology, Interfaces, Optical tracking, Optical filters, K band, Spectral resolution

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Proceedings Article | 12 September 2012 Paper

Paper

The GRAVITY spectrometers: optical design

Andreas Eckart, Michael Wiest, Wolfgang Brandner, Karine Perraut, Constanza Araujo-Hauck, Christian Straubmeier, Sebastian Fischer, Senol Yazici, Frank Eisenhauer, Guy Perrin, Markus Schöller, António Amorim, Imke Wank

Proceedings Volume 8445, 84452R (2012) https://doi.org/10.1117/12.925129

KEYWORDS: Spectrometers, Spectral resolution, Integrated optics, Sensors, Detector arrays, Prisms, Optical design, Polarization, Channel projecting optics, Metrology

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Proceedings Article | 12 September 2012 Paper

Paper

The GRAVITY spectrometers: metrology laser blocking system

Stefan Gillessen, Imke Wank, Sebastian Fischer, Michael Wiest, Constanza Araujo-Hauck, Guy Perrin, Andreas Eckart, Frank Eisenhauer, Senol Yazici, Karine Perraut, António Amorim, Christian Straubmeier, Wolfgang Brandner

Proceedings Volume 8445, 84452S (2012) https://doi.org/10.1117/12.925151

KEYWORDS: Optical filters, Metrology, K band, Laser metrology, Spectrometers, Absorbance, Integrated optics, Wavefronts, Reflectivity, Laser systems engineering

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Proceedings Article | 12 September 2012 Paper

Paper

A linear displacement mechanism for the GRAVITY spectrometers

Imke Wank, Christian Straubmeier, Andreas Eckart, Constanza Araujo-Hauck, Senol Yazici, António Amorim, Wolfgang Brandner, Frank Eisenhauer, Markus Schöller, Karine Perraut, Guy Perrin, Michael Wiest, Sebastian Fischer

Proceedings Volume 8445, 84452T (2012) https://doi.org/10.1117/12.925154

KEYWORDS: Spectrometers, Sensors, Brain-machine interfaces, Autocollimators, Distance measurement, Interferometry, Infrared sensors, Large telescopes, Interferometers, Telescopes

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Proceedings Article | 12 September 2012 Paper

Paper

The integrated optics beam combiner assembly of the GRAVITY/VLTI instrument

W. Brandner, A. Amorim, F. Eisenhauer, C. Straubmeier, G. Perrin, L. Jocou, A. Nolot, T. Moulin, P. Labeye, K. Perraut, Y. Magnard, V. Lapras

Proceedings Volume 8445, 84452X (2012) https://doi.org/10.1117/12.925556

KEYWORDS: Information operations, Waveguides, Interferometry, Prototyping, K band, Doping, Plasma enhanced chemical vapor deposition, Integrated optics, Phase shifts, Telescopes

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Proceedings Article | 12 September 2012 Paper

Paper

Simulation of Kalman-filter fringe tracking with on-sky measurements of the PRIMA Fringe Sensor Unit

Roberto Abuter, Jonathan Menu, Élodie Choquet, Pierre Fédou, Guy Perrin

Proceedings Volume 8445, 84452Y (2012) https://doi.org/10.1117/12.925578

KEYWORDS: Filtering (signal processing), Device simulation, Atmospheric modeling, Detection and tracking algorithms, Sensors, Algorithm development, Telescopes, Signal to noise ratio, K band, Electronic filtering

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Proceedings Article | 12 September 2012 Paper

Paper

GRAVITY: beam stabilization and light injection subsystems

K. Rousselet-Perraut, F. Eisenhauer, O. Pfuhl, S. Kellner, S. Gillessen, W. Brandner, M. Haug, T. Ott, G. Perrin, D. Penka, E. Wieprecht, S. Huber, F. Haußmann, E. Sturm, M. Lippa, A. Amorim, C. Straubmeier, L. Burtscher

Proceedings Volume 8445, 84451U (2012) https://doi.org/10.1117/12.925391

KEYWORDS: Fiber couplers, Mirrors, Cameras, Actuators, Telescopes, Sensors, Diodes, Prisms, Receivers, Stars

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Proceedings Article | 12 September 2012 Paper

Paper

The final design of the GRAVITY acquisition camera and associated VLTI beam monitoring strategy

Thomas Ott, Ekkehard Wieprecht, Oliver Pfuhl, Christian Straubmeier, Frank Eisenhauer, Jorge Lima, Wolfgang Brandner, Guy Perrin, Paulo Garcia, Marcus Haug, Antonio Amorim, Alexander Graeter, Karine Perraut, Narsireddy Anugu, Pedro Carvas, Markus Thiel

Proceedings Volume 8445, 844534 (2012) https://doi.org/10.1117/12.925993

KEYWORDS: Sensors, Cameras, Imaging systems, Telescopes, Lenses, Beam analyzers, Metrology, Semiconductor lasers, Mirrors, Image sensors

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Proceedings Article | 29 July 2010 Paper

Paper

Dimensioning the Gravity adaptive optics wavefront sensor

W. Brandner, E, Gendron, S. Gillessen, G. Perrin, K. Perraut, F. Eisenhauer, G. Rousset, Y. Clénet, C. Straubmeier, S, Hippler, A. Amorim

Proceedings Volume 7736, 77364A (2010) https://doi.org/10.1117/12.856661

KEYWORDS: Adaptive optics, Optical filters, Mirrors, Wavefront sensors, Signal to noise ratio, Wavefronts, Sensors, Computer simulations, Calibration, Telescopes

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Proceedings Article | 26 July 2010 Paper

Paper

The GRAVITY spectrometers: mechanical design

Markus Schöller, Constanza Araujo-Hauck, Guy Perrin, Karine Perraut, Christian Straubmeier, Andreas Eckart, Antonio Amorim, Wolfgang Brandner, Sebastian Fischer, Frank Eisenhauer, Senol Yazici, Michael Wiest

Proceedings Volume 7739, 77393P (2010) https://doi.org/10.1117/12.856118

KEYWORDS: Spectrometers, Sensors, Laser metrology, Metrology, Optical filters, Integrated optics, Optical alignment, Interfaces, Cameras, Collimators

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Proceedings Article | 22 July 2010 Paper

Paper

Development of a high-dynamic range imaging instrument for a single telescope by a pupil remapping system

Pierre Fedou, Éric Thiébaut, Julien Woillez, Olivier Lai, Pascal Bordé, Takayuki Kotani, Gaspard Duchene, Sylvestre Lacour, Jean-Philippe Berger, Elodie Choquet, Alfred Vidal-Madjar, Daniel Rouan, Alain Lecavelier des Etangs, Pierre Kervella, Stephen Ridgway, Franck Marchis, Elsa Huby, Guy Perrin, Olivier Chesneau

Proceedings Volume 7734, 77343O (2010) https://doi.org/10.1117/12.856899

KEYWORDS: Telescopes, High dynamic range imaging, Imaging systems, Single mode fibers, Adaptive optics, Range imaging, Stars, Observatories, Space telescopes, Wavefronts

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Proceedings Article | 22 July 2010 Paper

Paper

The Fiber Coupler subsystem of the future VLTI instrument GRAVITY

C. Straubmeier, O. Pfuhl, M. Thiel, M. Haug, S. Kellner, H. Bartko, K. Rousselet-Perraut, S. Gillessen, F. Eisenhauer, J. P. Berger, A. Amorim, A. Gräter, W. Brandner, G. Perrin

Proceedings Volume 7734, 77342A (2010) https://doi.org/10.1117/12.857506

KEYWORDS: Fiber couplers, Actuators, Mirrors, Prisms, Polarization, Telescopes, Single mode fibers, Cameras, Interferometry, Optical design

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Proceedings Article | 22 July 2010 Paper

Paper

The GRAVITY integrated optics beam combination

H. Bartko, S. Lacour, L. Jocou, P. Labeye, M. Thiel, G. Perrin, K. Perraut, T. Moulin, F. Eisenhauer, J. B. Lebouquin, A. Nolot, J. P. Berger

Proceedings Volume 7734, 773430 (2010) https://doi.org/10.1117/12.856375

KEYWORDS: Information operations, Prototyping, Integrated optics, Interferometry, K band, Telescopes, Phase shifts, Silica, Silicon, Glasses

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Proceedings Article | 22 July 2010 Open Access

Open Access

Paper

GRAVITY: a four telescope beam combiner instrument for the VLTI

R. Klein, A. Eckart, S. Rabien, K. Perraut, C. Straubmeier, A. Amorim, R.-R. Rohloff, N. Kudryavtseva, H. Bartko, F. Eisenhauer, D. Ziegler, J.-P. Berger, P. Carvas, M. Haug, J. Lima, E. Choquet, S. Fischer, C. Collin, W. Laun, M. Wiest, A. Sevin, T. Henning, P. Haguenauer, P. Fedou, M. Thiel, D. Moch, M. Schöller, F. Gonte, S. Kellner, P. Lena, K. Wagner, T. Moulin, F. Cassaing, S. Gillessen, D. Moratschke, V. Naranjo, T. Paumard, D. Rouan, R. Hofmann, O. Pfuhl, J. Ramos, W. Brandner, F. Chapron, C. Araujo-Hauck, A. Gräter, H. Baumeister, X. Haubois, S. Lacour, S. Yazici, Y. Clenet, P. Gitton, G. Rousset, A. Nolot, E. Gendron, R. Lenzen, L. Jocou, U. Neumann, S. Hippler, G. Perrin, J. Rees, V. Lapeyrere, P. Kervella, R. Genzel

Proceedings Volume 7734, 77340Y (2010) https://doi.org/10.1117/12.856689

KEYWORDS: Stars, Adaptive optics, Telescopes, Sensors, Interferometry, Integrated optics, Spectroscopy, Wavefront sensors, Near infrared, Metrology

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Proceedings Article | 22 July 2010 Paper

Paper

The fringe detection laser metrology for the GRAVITY interferometer at the VLTI

S. Gillessen, M. Thiel, H. Bartko, M. Haug, J.-P. Berger, K. Perraut, S. Lüst, C. Straubmeier, S. Lacour, O. Pfuhl, G. Perrin, D. Moch, S. Kellner, A. Amorim, C. Araujo-Hauck, W. Brandner, W. Fabian, L. Jocou, S. Rabien, F. Eisenhauer, A. Gräter, W. Chibani

Proceedings Volume 7734, 773421 (2010) https://doi.org/10.1117/12.856698

KEYWORDS: Metrology, Calibration, Phase shifts, Laser metrology, Infrared cameras, Diodes, Telescopes, Sensors, Phase measurement, Cameras

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Proceedings Article | 22 July 2010 Paper

Paper

The GRAVITY spectrometers: optical design and principle of operation

Guy Perrin, Christian Straubmeier, Michael Wiest, Markus Schöller, Antonio Amorim, Constanza Araujo-Hauck, Andreas Eckart, Senol Yazici, Sebastian Fischer, Frank Eisenhauer, Wolfgang Brandner, Karine Perraut

Proceedings Volume 7734, 773432 (2010) https://doi.org/10.1117/12.855983

KEYWORDS: Spectrometers, Integrated optics, Spectral resolution, Sensors, Detector arrays, Optical design, Polarization, Channel projecting optics, Metrology, Optical tracking

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Proceedings Article | 22 July 2010 Paper

Paper

Signatures of strong gravity with GRAVITY

N. Sabha, A. Eckart, F. Eisenhauer, A. Amorim, G. Witzel, G. Perrin, R. Buchholz, T. Paumard, M. Garcia-Marin, C. Araujo-Hauck, C. Straubmeier, M. Zamaninasab, M. Wiest, S. Fischer, M. Schöller, K. Perraut, K. Muzic, S. Yazici, W. Brandner

Proceedings Volume 7734, 77340X (2010) https://doi.org/10.1117/12.855955

KEYWORDS: Stars, Near infrared, Polarization, Interferometry, Infrared radiation, Polarimetry, Infrared imaging, Synchrotrons, Interferometers, Telescopes

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Proceedings Article | 22 July 2010 Paper

Paper

GRAVITY: design and performance of the fringe tracker

W. Brandner, E. Choquet, F. Cassaing, G. Perrin, S. Gillessen, K. Perraut, F. Eisenhauer, C. Straubmeier

Proceedings Volume 7734, 77341Z (2010) https://doi.org/10.1117/12.855984

KEYWORDS: Algorithm development, Infrared radiation, Interferometry, Current controlled current source, Tin, Telescopes, K band, Stars, Computer simulations, Detection and tracking algorithms

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Proceedings Article | 22 July 2010 Paper

Paper

The GRAVITY acquisition and guiding system

Wolfgang Brandner, Stefan Kellner, Christian Straubmeier, Pedro Carvas, Guy Perrin, Marcus Haug, Jorge Lima, Markus Thiel, Frank Eisenhauer, Oliver Pfuhl, Antonio Amorim, Jean-Philippe Berger

Proceedings Volume 7734, 773415 (2010) https://doi.org/10.1117/12.856907

KEYWORDS: Cameras, Sensors, Mirrors, Imaging systems, Stars, Telescopes, Control systems, Adaptive optics, Laser systems engineering, Laser scattering

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Proceedings Article | 22 July 2010 Paper

Paper

'OHANA-Iki: a test-bed for the 'OHANA beam combiner and delay line at CFHT

Marc Baril, Flora Bouchacourt, Guy Perrin, Olivier Lai, Julien Woillez, Pierre Fedou, George Zahariade

Proceedings Volume 7734, 77342C (2010) https://doi.org/10.1117/12.856219

KEYWORDS: Telescopes, Optical fibers, Mirrors, Interferometry, Stars, Gemini Observatory, Interferometers, Cameras, Servomechanisms, Astronomy

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Proceedings Article | 22 July 2010 Paper

Paper

GRAVITY spectrometer: metrology laser blocking strategy at OD=12

Guy Perrin, Frank Eisenhauer, Constanza Araujo-Hauck, Senol Yazici, Andreas Eckart, Christian Straubmeier, Sebastian Fischer, Stefan Gillessen, Michael Wiest, Antonio Amorim, Wolfgang Brandner, Karine Perraut, Hendrik Bartko

Proceedings Volume 7734, 77342Z (2010) https://doi.org/10.1117/12.856021

KEYWORDS: Optical filters, Metrology, Laser metrology, Spectroscopy, Coating, Infrared cameras, Mirrors, K band, Integrated optics, Absorbance

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Proceedings Article | 20 July 2010 Paper

Paper

Prototyping and testing of mechanical components for the GRAVITY spectrometers

Senol Yazici, Christian Straubmeier, Markus Thiel, Andreas Eckart, Guy Perrin, Constanza Araujo-Hauck, Marcus Haug, Frank Eisenhauer, Sebastian Fischer, Michael Wiest, Ralf-Rainer Rohloff, Karine Perraut, Wolfgang Brandner, Markus Schöller, Antonio Amorim

Proceedings Volume 7739, 77393Q (2010) https://doi.org/10.1117/12.856123

KEYWORDS: Spectrometers, Cryogenics, Sensors, Prototyping, Optical components, Actuators, Computer aided design, Manufacturing, Spectral resolution, Polarimetry

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Proceedings Article | 28 July 2008 Paper

Paper

Opto-mechanical design of the spectrometers of GRAVITY: the 6-Baseline K-Band Interferometer for the VLTI

Guy Perrin, Wolfgang Brandner, Andreas Eckart, Frank Eisenhauer, Christian Straubmeier

Proceedings Volume 7013, 701331 (2008) https://doi.org/10.1117/12.787549

KEYWORDS: Spectrometers, Sensors, Spectral resolution, Integrated optics, Detector arrays, Polarimetry, Interferometry, Prisms, K band, Laser metrology

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Proceedings Article | 28 July 2008 Paper

Paper

Fringe detection laser metrology for differential astrometric stellar interferometers

Alex Gräter, Markus Thiel, S. Rabien, Guy Perrin, Marcus Haug, J. Ziegleder, Wolfgang Brandner, S. Gillessen, F. Eisenhauer, Christian Straubmeier

Proceedings Volume 7013, 70130I (2008) https://doi.org/10.1117/12.788099

KEYWORDS: Metrology, Phase measurement, Interferometers, Mirrors, Telescopes, Fringe analysis, Stars, Light scattering, Calibration, Laser metrology

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Proceedings Article | 28 July 2008 Open Access

Open Access

Paper

GRAVITY: getting to the event horizon of Sgr A*

S. Kellner, P. Fédou, R. Lenzen, O. Pfuhl, R. Genzel, J. Kolmeder, H. Bartko, J. P. Berger, M. Thiel, J. Ziegleder, W. Brandner, F. Cassaing, K. Perraut, K. Houairi, F. Malbet, J. R. Ramos, M. Haug, T. Paumard, A. Gräter, A. Richichi, N. Hamaus, R. Hofmann, V. Naranjo, S. Lacour, S. Rabien, W. Laun, F. Eisenhauer, P. Kervella, G. Rousset, F. Hormuth, R. Klein, L. Jocou, M. Schöller, K. Dodds-Eden, D. Rouan, H. Baumeister, C. Straubmeier, A. Boehm, E. Gendron, G. Perrin, U. Neumann, T. Henning, S. Hippler, Y. Clénet, X. Haubois, R.-R. Rohloff, A. Eckart, S. Gillessen

Proceedings Volume 7013, 70132A (2008) https://doi.org/10.1117/12.788407

KEYWORDS: Stars, Telescopes, Near infrared, Adaptive optics, Metrology, Sensors, Interferometry, Integrated optics, Wavefront sensors, Spectroscopy

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Proceedings Article | 28 July 2008 Paper

Paper

Characterization of integrated optics components for the second generation of VLTI instruments

A. Delboulbé, L. Jocou, J.-P. Berger, E. Herwats, M. Benisty, G. Perrin, T. Moulin, P. Kern, X. Haubois, F. Malbet, P. Labeye, S. Lacour, K. Rousselet-Perraut

Proceedings Volume 7013, 701316 (2008) https://doi.org/10.1117/12.789795

KEYWORDS: Integrated optics, Telescopes, K band, Semiconducting wafers, Waveguides, Phase shifts, Information operations, Modulation, Photomasks, Single mode fibers

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Proceedings Article | 28 July 2008 Paper

Paper

Fringe tracking optimization with 4 beams: application to GRAVITY

W. Brandner, F. Cassaing, K. Houairi, S. Gillessen, C. Straubmeier, F. Eisenhauer, G. Perrin

Proceedings Volume 7013, 70131B (2008) https://doi.org/10.1117/12.790967

KEYWORDS: Sensors, Phase measurement, Stars, Interferometers, Atmospheric propagation, Atmospheric modeling, Detection and tracking algorithms, Adaptive optics, Demodulation, Visibility

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Proceedings Article | 9 July 2008 Paper

Paper

The FIRST project: a single-mode fiber-based very high-dynamic range diffraction-limited imaging instrument at visible to near-infrared wavelengths

Guy Perrin, Alfred Vidal-Madjar, Jean-Philippe Berger, Julien Woillez, Eric Thiébaut, Pierre Kervella, Alain Lecavelier, Pierre Fedou, Pascal Bordé, Olivier Chesneau, Stephen Ridgway, Daniel Rouan, Sylvestre Lacour, Takayuki Kotani, Olivier Lai

Proceedings Volume 7014, 70141P (2008) https://doi.org/10.1117/12.789008

KEYWORDS: High dynamic range imaging, Range imaging, Telescopes, Astronomy, Point spread functions, Visibility, Diffraction, Imaging systems, Exoplanets, Prototyping

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Proceedings Article | 28 June 2006 Open Access

Open Access

Paper

GRAVITY: the adaptive-optics-assisted two-object beam combiner instrument for the VLTI

S. Rabien, A. Eckart, T. Paumard, P. Lena, F. Eisenhauer, R. Genzel, C. Straubmeier, S. Gillessen, W. Brandner, S. Hippler, G. Perrin

Proceedings Volume 6268, 626811 (2006) https://doi.org/10.1117/12.671431

KEYWORDS: Stars, Telescopes, Wavefront sensors, Interferometry, Infrared radiation, Metrology, Infrared sensors, Infrared telescopes, Adaptive optics, Infrared imaging

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Proceedings Article | 14 June 2006 Paper

Paper

Remapping the pupil

S. Lacour, G. Perrin

Proceedings Volume 6265, 62652I (2006) https://doi.org/10.1117/12.672791

KEYWORDS: Visibility, High dynamic range imaging, Space telescopes, Telescopes, Spatial filters, Optical transfer functions, Image restoration, Interferometry, Apodization, Error analysis

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Proceedings Article | 15 September 2005 Paper

Paper

Single-mode filtering and pupil remapping

G. Perrin, S. Lacour

Proceedings Volume 5905, 590519 (2005) https://doi.org/10.1117/12.617917

KEYWORDS: Visibility, Imaging systems, Single mode fibers, Calibration, Telescopes, Spatial frequencies, Colorimetry, Sensors, Modulation transfer functions, High dynamic range imaging

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Proceedings Article | 20 October 2004 Paper

Paper

Multiple-beam combination for faint objects

Erez Ribak, Sylvestre Lacour, Guy Perrin

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.580224

KEYWORDS: Sensors, Fringe analysis, Colorimetry, Collimation, Space telescopes, Telescopes, Interferometry, Fiber couplers, Glasses, Lenses

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Proceedings Article | 20 October 2004 Paper

Paper

Preliminary result of the analysis of T Sagittarrii data and modeling

Uwe Graser, Bruno Lopez, Guy Perrin, Anne Dutrey, Nicole Berruyer, Gilles Niccolini, Olivier Chesneau, Jean-Luc Menut

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551525

KEYWORDS: Stars, Data modeling, Visibility, Monte Carlo methods, Radiative transfer, 3D modeling, Diffusion, Photons, Interferometry, Modeling

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Proceedings Article | 20 October 2004 Paper

Paper

Aperture masking interferometry and single-mode fibers

Guy Perrin, Sylvestre Lacour, Eric Thiebault, Julien Woillez, Francois Assemat

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551746

KEYWORDS: Visibility, Single mode fibers, Interferometry, Optical fibers, Adaptive optics, Telescopes, Calibration, Wavefronts, Turbulence, Phase measurement

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Proceedings Article | 20 October 2004 Paper

Paper

'OHANA phase I: adaptive optics and single mode fiber coupling

Katherine Roth, John White, Jean Guerin, Francois Reynaud, Christopher Neyman, Olivier Lai, Julien Woillez, Peter Wizinowich, Guy Perrin, David Le Mignant

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551326

KEYWORDS: Adaptive optics, Telescopes, Single mode fibers, Gemini Observatory, Interferometry, Keck Observatory, Phase interferometry, Interferometers, Multimode fibers, Observatories

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Proceedings Article | 20 October 2004 Paper

Paper

K band fibers for the 'OHANA project

Guy Perrin, Jean Guerin, Gwenael Maze, Julien Woillez, Takayuki Kotani

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551272

KEYWORDS: Optical fibers, Polarization, K band, Single mode fibers, Visibility, Glasses, Temperature metrology, Interferometers, Telescopes, Refractive index

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Proceedings Article | 20 October 2004 Paper

Paper

Tomography of active galactic nuclei broad line region: a science case for next-generation extremely long baseline optical interferometry

Julien Woillez, Guy Perrin, Olivier Lai, Hélène Sol

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551268

KEYWORDS: Interferometry, Interferometers, Tomography, Motion measurement, Spatial resolution, Active galactic nuclei, 3D modeling, Astronomical imaging, Bromine, Optical tomography

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Proceedings Article | 20 October 2004 Paper

Paper

'OHANA

Andrew Adamson, Katherine Roth, Christ Ftaclas, Jun Nishikawa, Julien Woillez, Pierre Lena, Takayuki Kotani, Olivier Guyon, Stephen Ridgway, Jean Guerin, Alan Tokunaga, Peter Wizinowich, Olivier Lai, Guy Perrin, Francois Reynaud, Sebastien Vergnole

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551585

KEYWORDS: Optical fibers, Telescopes, Interferometers, Single mode fibers, K band, Interferometry, Gemini Observatory, Space telescopes, Dispersion, Glasses

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Proceedings Article | 21 February 2003 Paper

Paper

Catalog of reference stars for long baseline stellar interferometry

Guy Perrin, Gilles Chagnon, Pascal Borde, Vincent Coude du Foresto

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.457191

KEYWORDS: Stars, Visibility, Calibration, Interferometers, K band, Interferometry, Stellar interferometry, Scanning probe microscopy, Infrared radiation, Atmospheric modeling

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Proceedings Article | 21 February 2003 Paper

Paper

Optical delay for OHANA

Julien Woillez, Jean Guerin, Olivier Lai, Guy Perrin, Stephen Ridgway

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459141

KEYWORDS: Polarization, Interferometry, Mirrors, Reflection, Optical fibers, Space telescopes, Telescopes, Silver, Wavefronts, Phase shifts

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Proceedings Article | 21 February 2003 Paper

Paper

OHANA phase II: a prototype demonstrator of fiber-linked interferometry between very large telescopes

Julien Woillez, Andrew Adamson, Stephen Ridgway, Jun Nishikawa, Olivier Guyon, Jean Guerin, Pierre Lena, Francois Reynaud, Peter Wizinowich, Olivier Lai, Francois Rigaut, Alan Tokunaga, Guy Perrin

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459382

KEYWORDS: Telescopes, Interferometers, Astronomy, Single mode fibers, Space telescopes, Prototyping, Interferometry, Astronomical imaging, Gemini Observatory, Large telescopes

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Proceedings Article | 21 February 2003 Paper

Paper

Injection into singlemode fibers for OHANA

Julien Woillez, Bernard Brient, Jean Guerin, Francois Reynaud, Guy Perrin, Olivier Lai, Claude Collin, Denis Ziegler, Jean Cretenet, Jean-Michel Reess, Christophe Berthod, Claude Marlot, Sylvain Pau

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459362

KEYWORDS: Adaptive optics, Telescopes, Single mode fibers, Interferometry, K band, Multimode fibers, Infrared telescopes, Astronomical telescopes, Head, Infrared detectors

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Proceedings Article | 21 February 2003 Paper

Paper

Ten-micron instrument MIDI: getting ready for observations on the VLTI

Jeroen de Jong, Bill Cotton, L. B. F. M. Waters, Eric Bakker, Frank Przygodda, Christoph Leinert, Clemens Storz, Peter Schuller, Sebastiano Ligori, Richard Mathar, Guy Perrin, Uwe Graser, Werner Laun, Jeffrey Meisner, Walter Jaffe, Bruno Lopez, Udo Neumann, Karl Wagner, Annelie Glazenborg-Kluttig, Olivier Chesneau

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.457027

KEYWORDS: Interferometry, Sensors, Visibility, Telescopes, Cameras, Modulation, Astatine, Mirrors, Optical filters, Spectral resolution

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Proceedings Article | 21 February 2003 Paper

Paper

MIDI scientific and technical observing modes

Olivier Chesneau, Jan-Willem Pel, Jeroen de Jong, Eric Bakker, Walter Jaffe, Uwe Graser, Annelie Glazenborg-Kluttig, Frank Przygodda, Guy Perrin, Jeffrey Meisner, Christoph Leinert, Bill Cotton, Isabelle Percheron

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459955

KEYWORDS: Calibration, Telescopes, Sensors, Visibility, Interferometers, Interferometry, Data archive systems, Observatories, Astronomy, Photometry

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Proceedings Article | 21 February 2003 Paper

Paper

Mid-infrared interferometry on the Chajnantor plateau: the ALIRA project

Pierre Lena, Jean Schneider, Guy Perrin, Anne Dutrey, Vincent Coude du Foresto

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459944

KEYWORDS: Interferometry, Mid-IR, Astronomical imaging, Astronomy, Heterodyning, Exoplanets

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Proceedings Article | 21 February 2003 Paper

Paper

Extragalactic astronomy with the OHANA array

Helene Sol, Olivier Guyon, Guy Perrin, Julien Woillez, Olivier Lai

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458072

KEYWORDS: Visibility, Interferometry, Interferometers, Distance measurement, Telescopes, Active galactic nuclei, Spatial resolution, Near infrared, Extragalactic astronomy, Astronomical imaging

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Proceedings Article | 21 February 2003 Paper

Paper

FLUOR fibered beam combiner at the CHARA array

Stephen Ridgway, Harold McAlister, Antoine Merand, Cyrille Baudouin, Vincent Coude du Foresto, Guy Perrin, Theo ten Brummelaar, Pascal Borde, Antonin Remond

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459942

KEYWORDS: Visibility, K band, Calibration, Telescopes, Interferometry, Infrared radiation, Stars, Interferometers, Mirrors, Spatial resolution

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Proceedings Article | 21 February 2003 Paper

Paper

OHANA: representative science objectives

Catherine Dougados, Julien Woillez, Helene Sol, Steve Warren, Eugene Magnier, Stephen Ridgway, Denis Mourard, Olivier Guyon, Guy Perrin, Jean-Philippe Berger, Vincent Coude du Foresto, Francois Menard, Olivier Lai, Fabien Malbet, Regis Lachaume

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459376

KEYWORDS: Stars, Interferometers, Telescopes, Visibility, Interferometry, K band, Signal to noise ratio, Light, Data modeling, Planets

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In this poster, we examine the science potential of an 800 meter interferometer such as the OHANA Array. The working assumptions are a K = 12 limiting magnitude, a 0.5 milliarcsecond resolution at K band, and a small (diffraction limit of individual telescope) field of view. The science cases described herein are by no means exhaustive and perhaps not even the ones that will eventually be carried out, but serve to illustrate the potential of the array. We expect that operation of the array will be proposal driven, so the actual science will come from the Mauna Kea communities. Our philosophy is that any measurement that can be made at a dedicated interferometer facility should not be a strong driver for OHANA. Therefore the science areas discussed in the poster focus on very high angular resolution measurements of faint sources. In some cases, science which can be addressed with simpler or dedicated facilities at an exploratory level can be carried to a significant new capability with OHANA. A limitng magnitude of 12 was obtained by simple computations, but first tests on the sky with the injection module (See adjacent poster on Phase I) will help narrow down this figure. At such sensitivity, Cepheid pulsations can be studied in considerable detail for a wide range of stellar parameters, leading to enhanced confidence in the accuracy of their use for distance measurement with minimal extrapolation or inferrence. The disk/star interaction zone in young stellar objects can be resolved with unprecedented detail for a range of masses and ages, providing direct information about the jet formation region, accretion rates and disk conditions. The broad line region of active galactic nuclei can be studied in a large number of sources of differing characteristics, testing specific models for AGN nuclear structure. For OHANA Phase III, a dual-star phase tracking capability is planned. With the resulting increased sensitivity, direct brown dwarf diameter measurement will provide a strong check on evolution models. Microlensing events could be resolved and provide unique new information about the lensing and the lensed objects.

Proceedings Article | 21 February 2003 Paper

Paper

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

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

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

OHANA Phase III: scientific operation of an 800-meter Mauna Kea interferometer

Alan Tokunaga, Stephen Ridgway, Guy Perrin, Andrew Adamson, Gregory Fahlman, Peter Wizinowich, Pierre Lena, Francois Rigaut, Jun Nishikawa, Olivier Lai

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459740

KEYWORDS: Telescopes, Observatories, Interferometry, Astronomy, Data modeling, Astronomical imaging, Interferometers, Infrared telescopes, Infrared radiation, Astronomical telescopes

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Once the proof of concept of the OHANA Array has been demonstrated, the Phase II capabilities can be put into regular science operation, and the OHANA facility can be upgraded to extend interferometric operation to include all of the telescopes of the OHANA Consortium member observatories. This will constitute the Phase III of OHANA. The technical developments required will be relatively straight-forward. Longer fiber sets will be procured (fiber losses are not a limiting factor at the OHANA scale). An enhanced delay line capability will be needed in order to exploit longer baselines with good sky coverage and ample super-synthesis (several compact, multi-pass long optical delay concepts are under investigation). The scheduling and operation modes of an instrument such as OHANA present interesting opportunities and complications. We envision a place for both collaborative consortium science, based on mutual allocation of facility access, and PI-driven access, based on telescope access exchange between consortium members. The most potentially successful mode of operation would imply a community driven model, open to proposals from the different time allocation comittees. This poster looks at possible methods of allocation and operation, inspired by the UKIRT infrared survey (UKIDSS), the European VLBI, and the very interesting possibility of a Mauna Kea telescope time exchange scheme. The issue of data property is of course intimately tied with the proposal/operation system, and means of data availability and distribution are discussed, along with data interpretation tools, which may be modeled on existing systems such as the ISC at Caltech or the JMMC in France. when weighed against the UV coverage, the potential science and the uniqueness of this project, all these issues are worth an in depth study. Discussions are starting as to an OHANA Operation Committee, the goal of which would be to discuss, define and eventually carry out operational modes. The goal, of course, is for the Operation Committee to handle the details of multi-telescope scheduling in a way that will be transparent to the scientist who merely seeks the observational results.

Proceedings Article | 21 February 2003 Paper

Paper

High angular resolution in 2010-2020: a comparison between possible post-VLT/VLTI instruments

Pierre Kern, Michel Tallon, Guy Perrin, Marc Ferrari, Gerard Rousset, Olivier Lardiere, Sophie Gillet, Fabien Malbet, Laurent Koechlin, Anne-Marie Lagrange, Denis Mourard, Pierre Riaud, Antoine Labeyrie, Luc Arnold

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458939

KEYWORDS: Space telescopes, Adaptive optics, Telescopes, Interferometry, Spatial resolution, Interferometers, Point spread functions, Aerospace engineering, Imaging arrays, Synthetic apertures

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Proceedings Article | 21 February 2003 Paper

Paper

Recent science results from the two-telescope IOTA

Marc Lacasse, Sam Ragland, Ettore Pedretti, Rafael Millan-Gabet, William Danchi, Peter Tuthill, F. Peter Schloerb, Wesley Traub, John Monnier, Vincent Coude du Foresto, Guy Perrin, Nathaniel Carleton

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459687

KEYWORDS: Visibility, Stars, Data modeling, Calibration, Content addressable memory, Infrared radiation, Atmospheric modeling, X-rays, Carbon, Interferometers

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Proceedings Article | 21 February 2003 Paper

Paper

10-um wavefront spatial filtering: first results with chalcogenide fibers

Christophe Daussy, Pascal Borde, Anne Amy-Klein, Pierre-Yvan Raynal, Alain Leger, Guy Perrin, Chi Nguyen, Gwenael Maze

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.459756

KEYWORDS: Optical fibers, Single mode fibers, Cladding, Wavefronts, Chalcogenides, Mid-IR, Interferometry, Spatial filters, Optical filters, Prototyping

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Proceedings Article | 21 February 2003 Paper

Paper

Interferometric observations of evolved stars in the L-band

Gilles Chagnon, Guy Perrin, Marc Lacasse, Bertrand Mennesson, Vincent Coude du Foresto

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458060

KEYWORDS: Stars, L band, Interferometry, Infrared radiation, Telescopes, Calibration, Interferometers, Thermography, Infrared telescopes, Data acquisition

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Proceedings Article | 21 February 2003 Paper

Paper

Jean-Marie Mariotti Center for Interferometry

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

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

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Proceedings Article | 5 July 2000 Paper

Paper

10-um interferometry on the VLTI with the MIDI instrument: a preview

Christoph Leinert, Vincent Coude du Foresto, Pierre Lena, Walter Jaffe, Rainer Lenzen, Johannes de Haas, Bruno Lopez, Sebastiano Ligori, Thomas Herbst, Guy Perrin, Annelie Glazenborg-Kluttig, Irene Porro, Reinhard Mundt, Oskar von der Luehe, Jan-Willem Pel, Laurens Waters, Rudolf le Poole, Uwe Graser

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390236

KEYWORDS: Interferometry, Telescopes, Sensors, Visibility, Interferometers, Cameras, Mid-IR, Astatine, Optical filters, Modulation

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Proceedings Article | 5 July 2000 Paper

Paper

Astrophysical potentials of the MIDI VLTI instrument

Bringfried Stecklum, Hans Zinnecker, Markus Feldt, Patrick de Laverny, Anne Dutrey, Thomas Henning, Uwe Graser, Laurens Waters, Bruno Lopez, Guy Perrin, Thomas Herbst, Farrokh Vakili, Christoph Leinert, Reinhard Mundt, Jeffrey Meisner, Daniel Rouan, Huub Roettgering

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390246

KEYWORDS: Visibility, Stars, Planets, Spatial frequencies, Telescopes, Astatine, Interferometry, Error analysis, Exoplanets, Active galactic nuclei

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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

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

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

MIDI: controlling a two 8-m telescope Michelson interferometer for the thermal infrared

William Cotton, Richard Mathar, Guy Perrin, Clemens Storz, Stefan Hippler, Walter Jaffe, Karl Wagner, Markus Feldt

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390276

KEYWORDS: Control systems, Sensors, Infrared telescopes, Data archive systems, Data processing, Telescopes, Interferometry, Human-machine interfaces, Visibility, Infrared radiation

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Proceedings Article | 5 July 2000 Paper

Paper

Spatial filtering with single-mode fibers for 10-um interferometry

Marc Ollivier, Vincent Coude du Foresto, Guy Perrin

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390180

KEYWORDS: Waveguides, Spatial filters, Single mode fibers, Interferometry, Wavefronts, Signal attenuation, Optical fibers, Glasses, Mid-IR, Nulling interferometry

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Proceedings Article | 5 July 2000 Paper

Paper

Fibered large interferometer on top of Mauna Kea: OHANA, the optical Hawaiian array for nanoradian astronomy

Guy Perrin, Pierre Lena, Olivier Lai, Vincent Coude du Foresto

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390272

KEYWORDS: Telescopes, Interferometers, Single mode fibers, Adaptive optics, Visibility, Astronomy, Interferometry, K band, Spectral resolution, Astronomical imaging

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Proceedings Article | 24 July 1998 Paper

Paper

FLUOR fibered instrument at the IOTA interferometer

Bertrand Mennesson, Cyril Ruilier, Vincent Coude du Foresto, Marc Lacasse, Wesley Traub, Guy Perrin

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317153

KEYWORDS: Visibility, Interferometers, Infrared radiation, Telescopes, Interferometry, Stars, Polarization, Waveguides, Calibration, Glasses

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Proceedings Article | 24 July 1998 Paper

Paper

Interferometric connection of large telescopes at Mauna Kea

Guy Perrin, Jean-Marie Mariotti, Pierre Lena, Vincent Coude du Foresto

Proceedings Volume 3350, (1998) https://doi.org/10.1117/12.317146

KEYWORDS: Telescopes, Optical fibers, Interferometers, Large telescopes, Adaptive optics, Interferometry, Single mode fibers, Infrared telescopes, Atmospheric optics, Astronomy

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Proceedings Article | 14 June 1995 Paper

Paper

Multistage fiber optic delay line for astronomical interferometry

Pierre Lena, Jean-Marie Mariotti, Guy Perrin, Vincent Coude du Foresto, Peiqian Zhao

Proceedings Volume 2476, (1995) https://doi.org/10.1117/12.211844

KEYWORDS: Fiber optics, Dispersion, Polarization, Optical switching, Interferometry, Refractive index, Waveguides, Astronomical interferometry, Signal attenuation, Optical fibers

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Proceedings Article | 14 June 1995 Paper

Paper

Fibered recombination unit for the Infrared-Optical Telescope Array

Vincent Coude du Foresto, James Benson, Jean-Marie Mariotti, Stephen Ridgway, Guy Perrin

Proceedings Volume 2476, (1995) https://doi.org/10.1117/12.211845

KEYWORDS: Interferometers, Telescopes, Visibility, Sensors, Infrared telescopes, Observatories, Single mode fibers, Interferometry, Mirrors, Infrared radiation

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Proceedings Article | 14 June 1995 Paper

Paper

Minimizing fiber dispersion effects in double Fourier stellar interferometers

Vincent Coude du Foresto, Maxime Boccas, Guy Perrin

Proceedings Volume 2476, (1995) https://doi.org/10.1117/12.211842

KEYWORDS: Dispersion, Interferometers, Waveguides, Modulation, Glasses, K band, Single mode fibers, Interferometry, Visibility, Phase shift keying

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Conference Committee Involvement (1)

New Frontiers in Stellar Interferometry

21 June 2004 | Glasgow, United Kingdom

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