Dr. Udo Beckmann Profile

Dr. Udo Beckmann

Physicist at Max-Planck-Institut für Radioastronomie

SPIE Involvement:

Author

Publications (39)

Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

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

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

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

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

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Proceedings Article | 9 July 2018 Paper

Paper

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

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

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

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

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

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

Proceedings Article | 4 August 2016 Paper

Paper

Data reduction for the MATISSE instrument

F. Millour, P. Berio, M. Heininger, K.-H. Hofmann, D. Schertl, G. Weigelt, F. Guitton, W. Jaffe, U. Beckmann, R. Petrov, F. Allouche, S. Robbe-Dubois, S. Lagarde, A. Soulain, A. Meilland, A. Matter, P. Cruzalèbes, B. Lopez

Proceedings Volume 9907, 990723 (2016) https://doi.org/10.1117/12.2232283

KEYWORDS: Modulation, Calibration, Sensors, Visibility, Interferometry, Telescopes, Distortion, Space telescopes, Atmospheric optics, Colorimetry

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Proceedings Article | 4 August 2016 Paper

Paper

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

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

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

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

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Proceedings Article | 4 August 2016 Paper

Paper

MATISSE: alignment, integration, and test phase first results

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

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

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

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

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

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

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

Proceedings Article | 27 July 2016 Paper

Paper

Further performance evaluation of 5.3 µm cut-off Hawaii-2RG detectors

Derek Ives, Udo Beckmann, Domingo Alvarez, Gert Finger, Christoph Geimer, Matthias Heininger, Leander Mehrgan, Simon Tulloch

Proceedings Volume 9915, 99152C (2016) https://doi.org/10.1117/12.2232888

KEYWORDS: Sensors, Infrared sensors, Nondestructive evaluation, Cryogenics, Infrared detectors, Signal detection, Infrared sensors, Clocks, Signal processing, Detection and tracking algorithms, Image sensors

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ESO has now delivered or tested in-house, four new 5.3 μm cut-off H2RG detectors, for various projects, such as MATISSE for the VLTI and the upgrade project for CRIRES, the cryogenic high-resolution infrared echelle spectrograph for the VLT. The specified instruments have required the implementation of some of the more unusual read out options for these detectors, which may have already been used by other groups, for example, the line-reset-read and line-read-reset modes rather than the standard global reset mode. The detectors are also offered with both output speed options, that is, the standard slow, low noise readout and the faster, higher noise readout, where > 10 frames/s are possible. In the process of building these detector systems and implementing these new options we have delved deeper into some of the lesser known features of these detectors and tried to characterize them more fully. It is important that these characteristics are well understood before delivery of the next generation of detectors for the ELTs where high speed and windowing options are required. We obtain very good performance at 2 Mpixel/s pixel speeds with less than 40 e- rms read noise, in all other aspects such as linearity, noise versus number of non-destructive reads and cross talk then the performance of the outputs is the same as slow speed operation. However, the high speed output stages are quite complex to operate, they need to be very well tuned and are prone to oscillation, if not set correctly. We will report on the best bias options to optimize their performance. Some stability issues are also seen with the slow outputs and this is also reported. Likewise we have observed differences between global reset and line reset for the detectors, manifested in a significant increase in detector full well for the line reset option, this also will be reported on. We have also determined that there may be signal induced by the detector readout clocking process for certain detector material or ROIC revision, at a significant level such that this may be the probable limiting factor of why Fowler sampling reaches a minimum noise value of approximately 3 e- rms for a small number of reads and then increases with further non-destructive reads.

Proceedings Article | 24 July 2014 Paper

Paper

MATISSE status report and science forecast

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

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

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

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Proceedings Article | 24 July 2014 Paper

Paper

A low-noise HAWAII detector system and new cold optics for the CLASSIC/CLIMB beam combiner instrument of the CHARA array

Udo Beckmann, Claus Connot, Matthias Heininger, Karl-Heinz Hofmann, Eddy Nußbaum, Dieter Schertl, Walter Solscheid, Theo ten Brummelaar, Nils Turner, Gerd Weigelt

Proceedings Volume 9146, 91461W (2014) https://doi.org/10.1117/12.2055850

KEYWORDS: Sensors, Electronics, Staring arrays, Analog electronics, Digital filtering, Prisms, Signal processing, Radio astronomy, Signal detection, Electrons

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Proceedings Article | 24 July 2014 Paper

Paper

Performance of the LINC NIRVANA fringe and flexure tracker at delivery

Matthew Horrobin, Andreas Eckart, Udo Beckmann, Claus Connot, Jens Dierkes, Bettina Lindhorst, Edmund Nußbaum, Steffen Rost, Semir Smajić, Christian Straubmeier, Imke Wank, Thomas Bertram, Jörg-Uwe Pott

Proceedings Volume 9146, 91462G (2014) https://doi.org/10.1117/12.2055724

KEYWORDS: Sensors, Sensor performance, Head, Computer programming, Telescopes, Interfaces, Control systems, Optical filters, Electronics, K band

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Proceedings Article | 23 July 2014 Paper

Paper

AQUARIUS: the next generation mid-IR detector for ground-based astronomy, an update.

Derek Ives, Gert Finger, Gerd Jakob, Udo Beckmann

Proceedings Volume 9154, 91541J (2014) https://doi.org/10.1117/12.2055837

KEYWORDS: Sensors, Telescopes, Mid-IR, Astronomy, Quantum efficiency, Mirrors, Manufacturing, Multiplexers, Doping, Data analysis

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ESO has already published data from a preliminary laboratory analysis on the new mid-IR detector, AQUARIUS, at the previous SPIE conference of 2012, held in Amsterdam². This data analysis indicated that this new mid-IR Si:As IBC detector, from Raytheon Vision Systems, was an excellent astronomical detector when compared to previous generations of this detector type, specifically in terms of stability, read noise and cosmetic quality. Since that time, the detector has been deployed into the VISIR¹ instrument at the VLT, with very mixed performance results, especially when used with the telescope secondary mirror, to chop between two areas of sky to do background subtraction and at the same time when many frames are co-added to improve the signal to noise performance. This is the typical mode of operation for a mid-IR instrument on a ground based telescope. Preliminary astronomical data analysis indicated that the new detector was a factor of two to three times less sensitive in terms of its signal to noise per unit time performance when directly compared to the old DRS detector that AQUARIUS was designed to replace. To determine the reason for this loss of sensitivity, the instrument was removed from the telescope and not offered to the ESO user community. A detector testing campaign was then initiated in our laboratory to determine the reasons for this loss of sensitivity, assuming that it was an issue with the new detector itself. This paper reports on our latest laboratory measurements to determine the reasons for this loss of sensitivity. We specifically report on indirect measurements made to measure the quantum efficiency of the detector, which can be difficult to measure directly. We also report on a little known source of noise, called Excess Low Frequency Noise (ELFN). Detailed analysis and testing has confirmed that this ELFN is the reason for the loss of instrument sensitivity. This has been proven by a re-commissioning phase at the telescope with the instrument and the detector. A new set of observing parameters and observational regime have been developed to help to mitigate the ELFN. We outline a possible explanation for the source of the EFLN, learnt from a literature search and discussion with the manufacturer.

Proceedings Article | 21 July 2014 Paper

Paper

Status of the ARGOS project

Sebastian Rabien, Lothar Barl, Udo Beckmann, Marco Bonaglia, José Luis Borelli, Joar Brynnel, Peter Buschkamp, Lorenzo Busoni, Julian Christou, Claus Connot, Richard Davies, Matthias Deysenroth, Simone Esposito, Wolfgang Gässler, Hans Gemperlein, Michael Hart, Martin Kulas, Michael Lefebvre, Michael Lehmitz, Tommaso Mazzoni, Edmund Nussbaum, Gilles Orban de Xivry, Diethard Peter, Andreas Quirrenbach, Walfried Raab, Gustavo Rahmer, Jesper Storm, Julian Ziegleder

Proceedings Volume 9148, 91481B (2014) https://doi.org/10.1117/12.2055932

KEYWORDS: Wavefront sensors, Sensors, Telescopes, Laser guide stars, Mirrors, Adaptive optics, Calibration, Stars, Laser systems engineering, Imaging spectroscopy

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SPIE Journal Paper | 6 February 2013

LINC-NIRVANA for the large binocular telescope: setting up the world’s largest near infrared binoculars for astronomy

Ralph Hofferbert, Harald Baumeister, Thomas Bertram, Jürgen Berwein, Peter Bizenberger, Armin Böhm, Michael Böhm, José Luis Borelli, Matthieu Brangier, Florian Briegel, Albert Conrad, Fulvio De Bonis, Roman Follert, Thomas Herbst, Armin Huber, Frank Kittmann, Martin Kürster, Werner Laun, Ulrich Mall, Daniel Meschke, Lars Mohr, Vianak Naranjo, Aleksei Pavlov, Jorg-Uwe Pott, Hans-Walter Rix, Ralf-Rainer Rohloff, Eva Schinnerer, Clemens Storz, Jan Trowitzsch, Zhaojun Yan, Xianyu Zhang, Andreas Eckart, Matthew Horrobin, Steffen Rost, Christian Straubmeier, Imke Wank, Jens Zuther, Udo Beckmann, Claus Connot, Matthias Heininger, Karl-Heinz Hofmann, Tim Kroner, Edmund Nussbaum, Dieter Schertl, Gerd Weigelt, Maria Bergomi, Alessandro Brunelli, Marco Dima, Jacopo Farinato, Demetrio Magrin, Luca Marafatto, Roberto Ragazzoni, Valentina Viotto, Carmelo Arcidiacono, Giovanni Bregoli, Paolo Ciliegi, Giuseppe Cosentino, Emiliano Diolaiti, Italo Foppiani, Matteo Lombini, Laura Schreiber, Francesco D'Alessio, Gianluca Li Causi, Dario Lorenzetti, Fabrizio Vitali, Mario Bertero, Patrizia Boccacci, Andrea La Camera

OE, Vol. 52, Issue 08, 081602, (February 2013) https://doi.org/10.1117/12.10.1117/1.OE.52.8.081602

KEYWORDS: Telescopes, Sensors, Mirrors, Interferometry, Near infrared, Adaptive optics, Interfaces, Cameras, Optical engineering, Astronomy

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Proceedings Article | 24 October 2012 Paper

Paper

LINC-NIRVANA for the LBT: setting up the world's largest NIR binoculars for astronomy

Ralph Hofferbert, Harald Baumeister, Thomas Bertram, Jürgen Berwein, Peter Bizenberger, Armin Böhm, Michael Böhm, José Luis Borelli, Matthieu Brangier, Florian Briegel, Albert Conrad, Fulvio De Bonis, Roman Follert, Tom Herbst, Armin Huber, Frank Kittmann, Martin Kürster, Werner Laun, Ulrich Mall, Daniel Meschke, Lars Mohr, Vianak Naranjo, Aleksei Pavlov, Jörg-Uwe Pott, Hans-Walter Rix, Ralf-Rainer Rohloff, Eva Schinnerer, Clemens Storz, Jan Trowitzsch, Zhaojun Yan, Xianyu Zhang, Andreas Eckart, Matthew Horrobin, Steffen Rost, Christian Straubmeier, Imke Wank, Jens Zuther, Udo Beckmann, Claus Connot, Matthias Heininger, Karl-Heinz Hofmann, Tim Kröner, Eddy Nussbaum, Dieter Schertl, Gerd Weigelt, Maria Bergomi, Alessandro Brunelli, Marco Dima, Jacopo Farinato, Demetrio Magrin, Luca Marafatto, Roberto Ragazzoni, Valentina Viotto, Carmelo Arcidiacono, Giovanni Bregoli, Paolo Ciliegi, Guiseppe Cosentino, Emiliano Diolaiti, Italo Foppiani, Matteo Lombini, Laura Schreiber, Francesco D'Alessio, Gianluca Li Causi, Dario Lorenzetti, Fabrizio Vitali, Mario Bertero, Patrizia Boccacci, Andrea La Camera

Proceedings Volume 8511, 85110A (2012) https://doi.org/10.1117/12.928284

KEYWORDS: Telescopes, Mirrors, Sensors, Interferometry, Cameras, Adaptive optics, Near infrared, Stars, Imaging systems, Interfaces

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Proceedings Article | 13 September 2012 Paper

Paper

Status of the ARGOS ground layer adaptive optics system

Wolfgang Gässler, Sebastian Rabien, Simone Esposito, Michael Lloyd-Hart, Lothar Barl, Udo Beckmann, Thomas Bluemchen, Marco Bonaglia, José Luis Borelli, Guido Brusa, Joar Brynnel, Peter Buschkamp, Lorenzo Busoni, Luca Carbonaro, Claus Connot, Richard Davies, Matthias Deysenroth, Olivier Durney, Richard Green, Hans Gemperlein, Victor Gasho, Marcus Haug, Pete Hubbard, Sebastian Ihle, Martin Kulas, Reinhard Lederer, Jason Lewis, Christina Loose, Michael Lehmitz, Jamison Noenickx, Edmund Nussbaum, Gilles Orban de Xivry, Diethard Peter, Andreas Quirrenbach, Matt Rademacher, Walfried Raab, Jesper Storm, Christian Schwab, Vidhya Vaitheeswaran, Julian Ziegleder

Proceedings Volume 8447, 844702 (2012) https://doi.org/10.1117/12.926167

KEYWORDS: Telescopes, Wavefront sensors, Mirrors, Sensors, Adaptive optics, Laser systems engineering, Calibration, Laser guide stars, Stars, Optical fabrication

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Proceedings Article | 12 September 2012 Paper

Paper

LINC-NIRVANA: optical elements of the fringe and flexure tracker

Jens Zuther, Andreas Eckart, Thomas Bertram, Matthew Horrobin, Bettina Lindhorst, Uwe Lindhorst, Jörg-Uwe Pott, Christoph Rauch, Steffen Rost, Semir Smajic, Christian Straubmeier, Imke Wank, Udo Beckmann, Rainer Lenzen, Evangelia Tremou

Proceedings Volume 8445, 844536 (2012) https://doi.org/10.1117/12.926017

KEYWORDS: Sensors, Telescopes, Zemax, Optical components, Mirrors, Optical simulations, Interferometry, Point spread functions, Beam splitters, Optical tracking

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Proceedings Article | 12 September 2012 Paper

Paper

MATISSE: concept, specifications, and performances

S. Lagarde, S. Robbe-Dubois, R. Petrov, B. Lopez, W. Jaffe, L. Venema, Ph. Berio, P. Antonelli, U. Beckmann, F. Bettonvil, U. Graser, R. Navarro, A. Matter

Proceedings Volume 8445, 84452J (2012) https://doi.org/10.1117/12.926285

KEYWORDS: Fourier transforms, Sensors, L band, Visibility, Spatial filters, Signal to noise ratio, Modulation, Photons, Interferometry, Photometry

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Proceedings Article | 16 September 2011 Paper

Paper

Status report on the Large Binocular Telescope's ARGOS ground-layer AO system

M. Hart, S. Rabien, L. Busoni, L. Barl, U. Beckmann, M. Bonaglia, Y. Boose, J. Borelli, T. Bluemchen, L. Carbonaro, C. Connot, M. Deysenroth, R. Davies, O. Durney, M. Elberich, T. Ertl, S. Esposito, W. Gaessler, V. Gasho, H. Gemperlein, P. Hubbard, S. Kanneganti, M. Kulas, K. Newman, J. Noenickx, G. Orban de Xivry, D. Peter, A. Quirrenbach, M. Rademacher, C. Schwab, J. Storm, V. Vaitheeswaran, G. Weigelt, J. Ziegleder

Proceedings Volume 8149, 81490J (2011) https://doi.org/10.1117/12.893916

KEYWORDS: Telescopes, Adaptive optics, Mirrors, Sensors, Stars, Control systems, Cameras, Wavefronts, Beam splitters, Wavefront sensors

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Proceedings Article | 28 July 2010 Open Access

Open Access

Paper

ARGOS: the laser guide star system for the LBT

S. Rabien, N. Ageorges, L. Barl, U. Beckmann, T. Blümchen, M. Bonaglia, J. Borelli, J. Brynnel, L. Busoni, L. Carbonaro, R. Davies, M. Deysenroth, O. Durney, M. Elberich, S. Esposito, V. Gasho, W. Gässler, H. Gemperlein, R. Genzel, R. Green, M. Haug, M. Hart, P. Hubbard, S. Kanneganti, E. Masciadri, J. Noenickx, G. Orban de Xivry, D. Peter, A. Quirrenbach, M. Rademacher, H. Rix, P. Salinari, C. Schwab, J. Storm, L. Strüder, M. Thiel, G. Weigelt, J. Ziegleder

Proceedings Volume 7736, 77360E (2010) https://doi.org/10.1117/12.857210

KEYWORDS: Adaptive optics, Mirrors, Stars, Laser systems engineering, Wavefront sensors, Sensors, Laser guide stars, Telescopes, Calibration, Turbulence

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Proceedings Article | 22 July 2010 Paper

Paper

OVMS: the optical path difference and vibration monitoring system for the LBT and its interferometers

M. Kürster, T. Bertram, J. L. Borelli, M. Brix, W. Gässler, T. Herbst, V. Naranjo, J.-U. Pott, J. Trowitzsch, T. Connors, P. Hinz, T. McMahon, D. Ashby, J. Brynnel, N. Cushing, T. Edgin, J. Esguerra, R. Green, J. Kraus, J. Little, U. Beckmann, G. Weigelt

Proceedings Volume 7734, 77342Y (2010) https://doi.org/10.1117/12.856693

KEYWORDS: Telescopes, Adaptive optics, Interferometers, Mirrors, Control systems, Data archive systems, Observatories, Data acquisition, Interferometry, Distributed computing

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Proceedings Article | 28 July 2008 Paper

Paper

System overview of the VLTI Spectro-Imager

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

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

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

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Proceedings Article | 28 July 2008 Paper

Paper

VSI: the VLTI spectro-imager

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

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

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

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

Proceedings Article | 28 July 2008 Paper

Paper

The LINC-NIRVANA fringe and flexure tracking system

Thomas Bertram, Andreas Eckart, Bettina Lindhorst, Steffen Rost, Christian Straubmeier, Evangelia Tremou, Yeping Wang, Imke Wank, Gunther Witzel, Udo Beckmann, Mario Brix, Sebastian Egner, Tom Herbst

Proceedings Volume 7013, 701327 (2008) https://doi.org/10.1117/12.788686

KEYWORDS: Sensors, Point spread functions, Mirrors, Interferometers, Interferometry, Adaptive optics, Cameras, Telescopes, Actuators, Staring arrays

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Proceedings Article | 10 July 2008 Paper

Paper

Vibration measurements at the Large Binocular Telescope (LBT)

M. Brix, V. Naranjo, U. Beckmann, R. Bertram, T. Bertram, J. Brynnel, S. Egner, W. Gaessler, T. Herbst, M. Kuerster, R. Rohloff, S. Rost, J. Schmidt

Proceedings Volume 7012, 70122J (2008) https://doi.org/10.1117/12.787533

KEYWORDS: Telescopes, Mirrors, Actuators, Computer programming, Electroluminescence, Optical components, Sensors, Signal processing, Control systems, Vibrometry

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Proceedings Article | 25 October 2004 Paper

Paper

LINC-NIRVANA: how to get a 23-m wavefront nearly flat

Wolfgang Gaessler, Roberto Ragazzoni, Thomas Herbst, David Andersen, Carmelo Arcidiacono, Harald Baumeister, Udo Beckmann, Jan Behrend, Thomas Bertram, Peter Bizenberger, Hermann Bohnhardt, F. Briegel, Emiliano Diolaiti, Thomas Driebe, A. Eckhardt, Sebastian Egner, Jacopo Farinato, Matthias Heininger, M. Kürster, Werner Laun, Sebastiano Ligori, Vianak Naranjo, Edmund Nussbaum, Hans-Walter Rix, Ralf-Rainer Rohloff, Piero Salinari, Roberto Soci, Clemens Storz, Christian Straubmeier, Elise Vernet-Viard, Gerd Weigelt, Robert Weiss, Wenli Xu

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.551908

KEYWORDS: Stars, Telescopes, Sensors, Wavefront sensors, Adaptive optics, Mirrors, Actuators, Wavefronts, Interferometry, Turbulence

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Proceedings Article | 25 October 2004 Paper

Paper

LINC-NIRVANA: the single arm MCAO experiment

Sebastian Egner, Wolfgang Gaessler, Tom Herbst, Roberto Ragazzoni, Remko Stuik, D. Andersen, C. Arcidiacono, H. Baumeister, U. Beckmann, J. Behrend, T. Bertram, P. Bizenberger, H. Boehnhardt, E. Diolaiti, T. Driebe, A. Eckhardt, J. Farinato, M. Kuerster, W. Laun, S. Ligori, Vianak Naranjo, E. Nußbaum, H.-W. Rix, R.-R. Rohloff, Piero Salinari, R. Soci, C. Straubmeier, E. Vernet-Viard, Gerd Weigelt, R. Weiss, W. Xu

Proceedings Volume 5490, (2004) https://doi.org/10.1117/12.550046

KEYWORDS: Actuators, Telescopes, Mirrors, Adaptive optics, Deformable mirrors, Temperature metrology, Stars, Cameras, Interferometers, Wavefront sensors

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Proceedings Article | 20 October 2004 Paper

Paper

The fringe and flexure tracking detector of the LBT LINC-NIRVANA beam-combiner instrument

Udo Beckmann, Jan Behrend, Hermann Bohnhardt, Claus Connot, Thomas Driebe, Matthias Heininger, Thomas Herbst, Karl-Heinz Hofmann, Edmund Nussbaum, Dieter Schertl, Walter Solscheid, Christian Straubmeier, Gerd Weigelt

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551195

KEYWORDS: Sensors, Electronics, Signal processing, Clocks, Stars, Atmospheric optics, Signal detection, Video, Image processing, Analog electronics

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Proceedings Article | 20 October 2004 Paper

Paper

The VLTI focal instrument Amber: results of the first phase of the alignment, integration, and verification in Paranal

Sylvie Robbe-Dubois, Romain Petrov, Stephane Lagarde, Pierre Antonelli, Yves Bresson, Alain Roussel, Denis Mourard, Fabien Malbet, Florentin Millour, Gerard Zins, Alain Delboulbe, Gilles Duvert, Laurence Gluck, Pierre Kern, Etienne LeCoarer, Karine Rousselet-Perraut, Eric Tatulli, Udo Beckmann, Matthias Heininger, Gerd Weigelt, Franco Lisi, Paolo Stefanini, Matteo Accardo, Carla Gil, Martin Vannier, Nicholas Haddad, Nico Housen, Mario Kiekebusch, Pedro Mardones, Florence Puech, Fredrik Rantakyro, Andrea Richichi, Markus Schoeller

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.550323

KEYWORDS: Stellar interferometry, Astronomy, Optical instrument design, Telescopes, Stars, Visibility

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Proceedings Article | 20 October 2004 Paper

Paper

The LINC-NIRVANA fringe and flexure tracking system: differential piston simulation and detection

Thomas Bertram, David Andersen, Carmelo Arcidiacono, Christian Straubmeier, Andreas Eckart, Udo Beckmann, Thomas Herbst

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551312

KEYWORDS: Point spread functions, Interferometry, Detection and tracking algorithms, Stars, Computer simulations, Algorithm development, Interferometers, Adaptive optics, Device simulation, Atmospheric corrections

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Proceedings Article | 20 October 2004 Paper

Paper

AMBER integration and laboratory performances

Karine Rousselet-Perraut, Etienne LeCoarer, Carla Gil, Pierre Kern, Brahim Arezki, Alain Delboulbe, Gilles Duvert, Laurence Gluck, Yves Magnard, Fabien Malbet, Florentin Millour, Eric Tatulli, Gerard Zins, Matteo Accardo, Pierre Antonelli, Udo Beckmann, Jan Behrend, Yves Bresson, Simone Busoni, Stephane Lagarde, Franco Lisi, Romain Petrov, Sylvie Robbe-Dubois, Alain Roussel

Proceedings Volume 5491, (2004) https://doi.org/10.1117/12.551284

KEYWORDS: Spectral resolution, K band, Polarizers, Visibility, Spatial filters, Calibration, Telescopes, Interferometry, Single mode fibers, Sensors

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Proceedings Article | 30 September 2004 Paper

Paper

The LINC-NIRVANA cryogenic interferometric camera

Peter Bizenberger, Dave Andersen, Harald Baumeister, Udo Beckmann, Emiliano Diolaiti, Tom Herbst, Werner Laun, Lars Mohr, Vianak Naranjo, Christian Straubmeier

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.551400

KEYWORDS: Sensors, Cryogenics, Telescopes, Interferometry, Cameras, Mirrors, Point spread functions, Tolerancing, Collimators, Adaptive optics

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Proceedings Article | 7 July 2004 Paper

Paper

LINC-NIRVANA: first attempt of an instrument for a 23-m-class telescope

Wolfgang Gassler, Thomas Herbst, Roberto Ragazzoni, David Andersen, Carmelo Arcidiacono, Harald Baumeister, Udo Beckmann, Thomas Bertram, Peter Bizenberger, Hermann Bohnhardt, Emiliano Diolaiti, Andreas Eckart, Jacopo Farinato, Sebastiano Ligori, Hans-Walter Rix, Ralf-Rainer Rohloff, Piero Salinari, Roberto Soci, Christian Straubmeier, Elise Vernet-Viard, Gerd Weigelt, Robert Weiss, Wenli Xu

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566389

KEYWORDS: Telescopes, Sensors, Adaptive optics, Wavefront sensors, Stars, Collimators, Mirrors, Cameras, Optical instrument design, Deformable mirrors

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Proceedings Article | 21 February 2003 Paper

Paper

Near-infrared IOTA interferometry of the symbiotic star CH Cyg

Karl-Heinz Hofmann, Udo Beckmann, Jean-Philippe Berger, Thomas Bloecker, Michael Brewer, Marc Lacasse, Victor Malanushenko, Rafael Millan-Gabet, John Monnier, Keiichi Ohnaka, Ettore Pedretti, Dieter Schertl, F. Peter Schloerb, Michael Scholz, Wesley Traub, Gerd Weigelt, Boris Yudin

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458904

KEYWORDS: Visibility, Stars, K band, Interferometry, Electromagnetic coupling, Linear filtering, Astronomy, Interferometers, Radium, Physics

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Proceedings Article | 21 February 2003 Paper

Paper

JHK-band spectro-interferometry of T Cep with the IOTA interferometer

Gerd Weigelt, Udo Beckmann, Jean-Philippe Berger, Thomas Bloecker, Michael Brewer, Karl-Heinz Hofmann, Marc Lacasse, Victor Malanushenko, Rafael Millan-Gabet, John Monnier, Keiichi Ohnaka, Ettore Pedretti, Dieter Schertl, F. Peter Schloerb, Michael Scholz, Wesley Traub, Boris Yudin

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458659

KEYWORDS: Visibility, K band, Stars, Interferometers, Radium, Linear filtering, Astronomy, Prisms, Temperature metrology, Spatial frequencies

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Proceedings Article | 21 February 2003 Paper

Paper

Using the near-infrared VLTI instrument AMBER

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

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

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

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Proceedings Article | 21 February 2003 Paper

Paper

IOTA observation of the circumstellar envelope of R CrB

Keiichi Ohnaka, Udo Beckmann, Jean-Philippe Berger, Michael Brewer, Karl-Heinz Hofmann, Marc Lacasse, Victor Malanushenko, Rafael Millan-Gabet, John Monnier, Ettore Pedretti, Dieter Schertl, F. Peter Schloerb, Victor Shenavrin, Wesley Traub, Gerd Weigelt, Boris Yudin

Proceedings Volume 4838, (2003) https://doi.org/10.1117/12.458931

KEYWORDS: Visibility, Stars, K band, Interferometry, Surface conduction electron emitter displays, Clouds, Infrared telescopes, Astronomy, Infrared radiation, Optical telescopes

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Proceedings Article | 5 July 2000 Paper

Paper

GI2T/REGAIN spectro-interferometry with a new infrared beam combiner

Gerd Weigelt, Denis Mourard, Lyu Abe, Udo Beckmann, Olivier Chesneau, C. Hillemanns, Karl-Heinz Hofmann, Sam Ragland, Dieter Schertl, Michael Scholz, Philippe Stee, Nathalie Thureau, Farrokh Vakili

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390261

KEYWORDS: Stars, Calcium, Visibility, K band, Infrared radiation, Interferometers, Temperature metrology, Digital signal processing, Carbon monoxide, Signal processing

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Proceedings Article | 5 July 2000 Paper

Paper

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

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

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

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

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Proceedings Article | 5 July 2000 Paper

Paper

AMBER: optical design and expected performance

Sylvie Robbe-Dubois, Pierre Antonelli, Udo Beckmann, Yves Bresson, Sandro Gennari, Stephane Lagarde, Franco Lisi, Fabien Malbet, Gregoire Martinot-Lagarde, Yves Rabbia, Sylvestre Rebattu, Francois Reynaud, Karine Perraut-Rousselet, Romain Petrov

Proceedings Volume 4006, (2000) https://doi.org/10.1117/12.390212

KEYWORDS: Spectrographs, Interferometry, Wavefronts, Calibration, Telescopes, Sensors, Spatial filters, Tolerancing, K band, Visibility

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Proceedings Article | 5 July 2000 Paper

Paper

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

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

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

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

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Showing 5 of 39 publications

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