Ms. Wenli Xu Profile

Wenli Xu

Optical System Engineering at Wenli Xu Optical System Engg

SPIE Involvement:

Author

Publications (31)

Proceedings Article | 8 July 2018 Paper

4MOST: status of the high resolution spectrograph

W. Seifert, W. Xu, P. Buschkamp, C. Feiz, A. ElHaddad, A. Saviauk, A. Quirrenbach, H. Mandel

Proc. SPIE. 10702, Ground-based and Airborne Instrumentation for Astronomy VII

KEYWORDS: Optical components, Telescopes, Spectrographs, Cameras, Sensors, Collimators, Space telescopes, Optical benches, Optics manufacturing, Camera shutters

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Proceedings Article | 17 November 2016 Paper

CARMENES: an overview six months after first light

A. Quirrenbach, P. Amado, J. Caballero, R. Mundt, A. Reiners, I. Ribas, W. Seifert, M. Abril, J. Aceituno, F. Alonso-Floriano, H. Anwand-Heerwart, M. Azzaro, F. Bauer, D. Barrado, S. Becerril, V. J. Bejar, D. Benitez, Z. Berdinas, M. Brinkmöller, M. Cardenas, E. Casal, A. Claret, J. Colomé, M. Cortes-Contreras, S. Czesla, M. Doellinger, S. Dreizler, C. Feiz, M. Fernandez, I. Ferro, B. Fuhrmeister, D. Galadi, I. Gallardo, M. Gálvez-Ortiz, A. Garcia-Piquer, R. Garrido, L. Gesa, V. Gómez Galera, J. González Hernández, R. Gonzalez Peinado, U. Grözinger, J. Guàrdia, E. Guenther, E. de Guindos, H.-J. Hagen, A. Hatzes, P. Hauschildt, J. Helmling, T. Henning, D. Hermann, R. Hernández Arabi, L. Hernández Castaño, F. Hernández Hernando, E. Herrero, A. Huber, K. Huber, P. Huke, S. Jeffers, E. de Juan, A. Kaminski, M. Kehr, M. Kim, R. Klein, J. Klüter, M. Kürster, M. Lafarga, L. Lara, A. Lamert, W. Laun, R. Launhardt, U. Lemke, R. Lenzen, M. Llamas, M. Lopez del Fresno, M. López-Puertas, J. López-Santiago, J. Lopez Salas, H. Magan Madinabeitia, U. Mall, H. Mandel, L. Mancini, J. Marin Molina, D. Maroto Fernández, E. Martín, S. Martín-Ruiz, C. Marvin, R. Mathar, E. Mirabet, D. Montes, J. Morales, R. Morales Muñoz, E. Nagel, V. Naranjo, G. Nowak, E. Palle, J. Panduro, V. Passegger, A. Pavlov, S. Pedraz, E. Perez, D. Pérez-Medialdea, M. Perger, M. Pluto, A. Ramón , R. Rebolo, P. Redondo, S. Reffert, S. Reinhart, P. Rhode, H.-W. Rix, F. Rodler, E. Rodríguez, C. Rodríguez López, R. Rohloff, A. Rosich, M Sanchez Carrasco, J. Sanz-Forcada, P. Sarkis, L. Sarmiento, S. Schäfer, J. Schiller, C. Schmidt, J. H. M. M. Schmitt, P. Schöfer, A. Schweitzer, D. Shulyak, E. Solano, O. Stahl, C. Storz, H. Tabernero, M. Tala, L. Tal-Or, R.-G. Ulbrich, G. Veredas, J. I. Vico Linares, F. Vilardell, K. Wagner, J. Winkler, M.-R. Zapatero Osorio, M. Zechmeister, M. Ammler-von Eiff, G. Anglada-Escudé, C. del Burgo, M. Garcia-Vargas, A. Klutsch, J.-L. Lizon, M. Lopez-Morales, A. Ofir, A. Pérez-Calpena, M. A. C. Perryman, E. Sánchez-Blanco , J. B. P. Strachan, J. Stürmer, J. Suárez, T. Trifonov, S. Tulloch, W. Xu

Proc. SPIE. 9908, Ground-based and Airborne Instrumentation for Astronomy VI

KEYWORDS: Observatories, Telescopes, Spectrographs, Fabry–Perot interferometers, Stars, Calibration, Lamps, Control systems, Data archive systems, Planets

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Proceedings Article | 9 August 2016 Paper

4MOST: the high-resolution spectrograph

W. Seifert, W. Xu, P. Buschkamp, C. Feiz, A. Saviauk, S. Barden, A. Quirrenbach, H. Mandel

Proc. SPIE. 9908, Ground-based and Airborne Instrumentation for Astronomy VI

KEYWORDS: Optical components, Telescopes, Spectrographs, Cameras, Sensors, Interfaces, Collimators, Head, Space telescopes, Optical benches

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Proceedings Article | 9 August 2016 Paper

CARMENES: the VIS channel spectrograph in operation

W. Seifert, W. Xu, O. Stahl, H. J. Hagen, M. Sánchez Carrasco, G. Veredas, J. Caballero, J. Guardia, J. Helmling, L. Hernandez, A. Pérez-Calpena, S. Tulloch, A. Kaminski, M. Zechmeister, A. Quirrenbach, P. Amado, I. Ribas, A. Reiners, H. Mandel

Proc. SPIE. 9908, Ground-based and Airborne Instrumentation for Astronomy VI

KEYWORDS: Optical fibers, Observatories, Telescopes, Spectrographs, Visible radiation, Fabry–Perot interferometers, Cameras, Sensors, Calibration, Spectral resolution

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Proceedings Article | 7 August 2014 Paper

MUSE field splitter unit: fan-shaped separator for 24 integral field units

Florence Laurent, Edgard Renault, Heiko Anwand, Didier Boudon, Patrick Caillier, Johan Kosmalski, Magali Loupias, Harald Nicklas, Walter Seifert, Yves Salaun, Wenli Xu

Proc. SPIE. 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation

KEYWORDS: Telescopes, Mirrors, Spectrographs, Manufacturing, Image quality, Relays, Vignetting, Optical alignment, Tolerancing, Optics manufacturing

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MUSE (Multi Unit Spectroscopic Explorer) is a second generation Very Large Telescope (VLT) integral field spectrograph developed for the European Southern Observatory (ESO). It combines a 1’ x 1’ field of view sampled at 0.2 arcsec for its Wide Field Mode (WFM) and a 7.5"x7.5" field of view for its Narrow Field Mode (NFM). Both modes will operate with the improved spatial resolution provided by GALACSI (Ground Atmospheric Layer Adaptive Optics for Spectroscopic Imaging), that will use the VLT deformable secondary mirror and 4 Laser Guide Stars (LGS) foreseen in 2015. MUSE operates in the visible wavelength range (0.465-0.93 μm). A consortium of seven institutes is currently commissioning MUSE in the Very Large Telescope for the Preliminary Acceptance in Chile, scheduled for September, 2014. MUSE is composed of several subsystems which are under the responsibility of each institute. The Fore Optics derotates and anamorphoses the image at the focal plane. A Splitting and Relay Optics feed the 24 identical Integral Field Units (IFU), that are mounted within a large monolithic instrument mechanical structure. Each IFU incorporates an image slicer, a fully refractive spectrograph with VPH-grating and a detector system connected to a global vacuum and cryogenic system. During 2012 and 2013, all MUSE subsystems were integrated, aligned and tested to the P.I. institute at Lyon. After successful PAE in September 2013, MUSE instrument was shipped to the Very Large Telescope in Chile where it was aligned and tested in ESO integration hall at Paranal. After, MUSE was directly transferred in monolithic way onto VLT telescope where the first light was achieved. This paper describes the MUSE main optical component: the Field Splitter Unit. It splits the VLT image into 24 subfields and provides the first separation of the beam for the 24 Integral Field Units. This talk depicts its manufacturing at Winlight Optics and its alignment into MUSE instrument. The success of the MUSE alignment is demonstrated by the excellent results obtained onto MUSE positioning, image quality and throughput onto the sky. MUSE commissioning at the VLT is planned for September, 2014.

Proceedings Article | 4 August 2014 Paper

TOAD: a numerical model for the 4MOST instrument

Roland Winkler, Dionne Haynes, Olga Bellido-Tirado, Wenli Xu, Roger Haynes

Proc. SPIE. 9150, Modeling, Systems Engineering, and Project Management for Astronomy VI

KEYWORDS: Target detection, Point spread functions, Telescopes, Spectrographs, Sensors, Image sensors, Electroluminescent displays, Atmospheric modeling, Systems modeling, Device simulation

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Proceedings Article | 24 July 2014 Paper

The 4MOST instrument concept overview

Roger Haynes, Samuel Barden, Roelof de Jong, Olivier Schnurr, Olga Bellido, Jakob Walcher, Dionne Haynes, Roland Winkler, Svend-Marian Bauer, Frank Dionies, Allar Saviauk, Cristina Chiappini, Axel Schwope, Joar Brynnel, Matthias Steinmetz, Richard McMahon, Sofia Feltzing, Patrick Francois, Scott Trager, Ian Parry, Mike Irwin, Nicholas Walton, David King, David Sun, Eduaro Gonzalez-Solares, Ian Tosh, Gavin Dalton, Kevin Middleton, Piercarlo Bonifacio, Pascal Jagourel, Shan Mignot, Mathieu Cohen, Jean-Philippe Amans, Frederic Royer, Paola Sartoretti, Johan Pragt, Gerrit Gerlofsma, Ronald Roelfsema, Ramon Navarro, Guido Thimm, Walter Seifert, Norbert Christlieb, Holger Mandel, Trifon Trifonov, Wenli Xu, Florian Lang-Bardl, Bernard Muschielok, Jörg Schlichter, Hans-Joachim Hess, Frank Grupp, Hans Boehringer, Thomas Boller, Tom Dwelly, Ralf Bender, Piero Rosati, Olaf Iwert, Gert Finger, Jean-Louis Lizon L'Allemand, Will Saunders, Andrew Sheinis, Gabriella Frost, Tony Farrell, Lewis Waller, Eric Depagne, Florence Laurent, Patrick Caillier, Johan Kosmalski, Johan Richard, Roland Bacon, Wolfgang Ansorge

Proc. SPIE. 9147, Ground-based and Airborne Instrumentation for Astronomy V

KEYWORDS: Telescopes, Spectrographs, Optical design, Metrology, Sensors, Calibration, Ions, Control systems, Neodymium, Optical instrument design

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Proceedings Article | 5 October 2012 Paper

CARMENES. I: instrument and survey overview

Andreas Quirrenbach, Pedro Amado, Walter Seifert, Miguel Sánchez Carrasco, Holger Mandel, Jose Caballero, Reinhard Mundt, Ignasi Ribas, Ansgar Reiners, Miguel Abril, Jesus Aceituno, Javier Alonso-Floriano, Matthias Ammler-von Eiff, Guillem Anglada-Escude, Regina Antona Jiménez, Heiko Anwand-Heerwart, David Barrado y Navascués, Santiago Becerril, Victor Bejar, Daniel Benitez, Concepcion Cardenas, Antonio Claret, Josep Colome, Miriam Cortés-Contreras, Stefan Czesla, Carlos del Burgo, Michaela Doellinger, R. Dorda, Stefan Dreizler, Carmen Feiz, Matilde Fernandez, David Galadi, Rafael Garrido, Jonay González Hernández, Josep Guardia, Eike Guenther, Enrique de Guindos, Juan Gutiérrez-Soto, Hans Hagen, Artie Hatzes, Peter Hauschildt, Jens Helmling, Thomas Henning, Enrique Herrero, Armin Huber, Klaus Huber, Sandra Jeffers, Viki Joergens, Enrique de Juan, M. Kehr, Alexis Klutsch, Martin Kürster, S. Lalitha, Werner Laun, Ulrike Lemke, Rainer Lenzen, Jean-Louis Lizon, Mauro López del Fresno, Mercedes López-Morales, Javier López-Santiago, Ulrich Mall, Eduardo Martin, Susana Martín-Ruiz, Eduard Mirabet, David Montes, Juan Carlos Morales, Rafael Morales Muñoz, Andres Moya, Vianak Naranjo, Raquel Oreiro, David Pérez Medialdea, Michael Pluto, Ovidio Rabaza, Alejandro Ramon, Rafael Rebolo, Sabine Reffert, Petra Rhode, Hans-Walter Rix, Florian Rodler, Eloy Rodríguez, Cristina Rodríguez López, Emilio Rodríguez Pérez, A. Rodriguez Trinidad, Ralf-Reiner Rohloff, Ernesto Sánchez-Blanco, Jorge Sanz-Forcada, Sebastian Schäfer, Jörg Schiller, Christof Schmidt, Jürgen Schmitt, Enrique Solano, Otmar Stahl, Clemens Storz, Julian Stürmer, Juan Carlos Suarez, Ulrich Thiele, Rainer Ulbrich, Manuela Vidal-Dasilva, Karl Wagner, Johannes Winkler, Wenli Xu, Maria Rosa Zapatero Osorio, Mathias Zechmeister

Proc. SPIE. 8446, Ground-based and Airborne Instrumentation for Astronomy IV

KEYWORDS: Optical fibers, Near infrared, Telescopes, Spectrographs, Stars, Sensors, Calibration, Lamps, Exoplanets, Planets

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Proceedings Article | 24 September 2012 Paper

Performance of the main instrument structure and the optical relay system of MUSE

Harald Nicklas, Heiko Anwand, Andreas Fleischmann, Christof Köhler, Wenli Xu, Walter Seifert, Florence Laurent

Proc. SPIE. 8446, Ground-based and Airborne Instrumentation for Astronomy IV

KEYWORDS: Telescopes, Mirrors, Spectrographs, Imaging systems, Lenses, Relays, Aluminum, Integrated optics, Device simulation, Channel projecting optics

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Proceedings Article | 24 September 2012 Paper

CARMENES. II: optical and opto-mechanical design

W. Seifert, M. A. Sánchez Carrasco, W. Xu, M. C. Cárdenas, E. Sánchez-Blanco, S. Becerril, C. Feiz, A. Ramón, S. Dreizler, P. Rohde, A. Quirrenbach, P. J. Amado, I. Ribas, A. Reiners, H. Mandel, J. A. Caballero

Proc. SPIE. 8446, Ground-based and Airborne Instrumentation for Astronomy IV

KEYWORDS: Optomechanical design, Near infrared, Telescopes, Mirrors, Spectrographs, Cameras, Sensors, Calibration, Collimators, Optical benches

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Proceedings Article | 24 September 2012 Paper

MUSE optical alignment procedure

Florence Laurent, Edgard Renault, Magali Loupias, Johan Kosmalski, Heiko Anwand, Roland Bacon, Didier Boudon, Patrick Caillier, Eric Daguisé, Jean-Pierre Dubois, Christophe Dupuy, Andreas Kelz, Jean-Louis Lizon, Harald Nicklas, Laurent Parès, Alban Remillieux, Walter Seifert, Hervé Valentin, Wenli Xu

Proc. SPIE. 8446, Ground-based and Airborne Instrumentation for Astronomy IV

KEYWORDS: Telescopes, Mirrors, Spectrographs, Sensors, Calibration, Copper, Interfaces, Image quality, Relays, Optical alignment

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Proceedings Article | 22 September 2011 Paper

Optical design of the VLT/MUSE instrument

Johan Kosmalski, Laurent Parès, Walter Seifert, Wenli Xu, Jean-Christophe Olaya, Bernard Delabre

Proc. SPIE. 8167, Optical Design and Engineering IV

KEYWORDS: Mirrors, Spectrographs, Optical design, Prisms, Metrology, Surface plasmons, Reflection, Copper, Relays, Charge-coupled devices

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Proceedings Article | 22 September 2011 Paper

MUSE splitting and relay optics: a fan-shaped bridge for 24 spectrographs

Wenli Xu, Harald Nicklas, Walter Seifert, Magali Loupias, Florence Laurent, Heiko Anwand

Proc. SPIE. 8167, Optical Design and Engineering IV

KEYWORDS: Mirrors, Spectrographs, Adaptive optics, 3D modeling, Relays, Bridges, Optical alignment, Tolerancing, Prototyping, Channel projecting optics

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Proceedings Article | 20 July 2010 Paper

Analyzing the MUSE opto-mechanics serving as an optical bench in 3D space

Christof Köhler, Harald Nicklas, Wenli Xu

Proc. SPIE. 7735, Ground-based and Airborne Instrumentation for Astronomy III

KEYWORDS: Optomechanical design, Optical components, Zemax, Telescopes, Mirrors, Spectrographs, Earthquakes, Relays, Finite element methods, Aluminum

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Proceedings Article | 15 July 2010 Paper

CARMENES: Calar Alto high-resolution search for M dwarfs with exo-earths with a near-infrared Echelle spectrograph

A. Quirrenbach, P. Amado, H. Mandel, J. Caballero, R. Mundt, I. Ribas, A. Reiners, M. Abril, J. Aceituno, C. Afonso, D. Barrado y Navascues, J. Bean, V. J. Béjar, S. Becerril, A. Böhm, M. Cárdenas, A. Claret, J. Colomé, L. Costillo, S. Dreizler, M. Fernández, X. Francisco, D. Galadí, R. Garrido, J. González Hernández, J. Guàrdia, E. Guenther, F. Gutiérrez-Soto, V. Joergens, A. Hatzes, J. Helmling, T. Henning, E. Herrero, M. Kürster, W. Laun, R. Lenzen, U. Mall, E. Martin, S. Martín-Ruiz, E. Mirabet, D. Montes, J. Morales, R. Morales Muñoz, A. Moya, V. Naranjo, O. Rabaza, A. Ramón, R. Rebolo, S. Reffert, F. Rodler, E. Rodríguez, A. Rodríguez Trinidad, R. Rohloff, M. Sánchez Carrasco, C. Schmidt, W. Seifert, J. Setiawan, E. Solano, O. Stahl, C. Storz, J. Suárez, U. Thiele, K. Wagner, G. Wiedemann, M. Zapatero Osorio, C. del Burgo, E. Sánchez-Blanco, W. Xu

Proc. SPIE. 7735, Ground-based and Airborne Instrumentation for Astronomy III

KEYWORDS: Optical fibers, Telescopes, Spectrographs, Stars, Sensors, Calibration, Lamps, Exoplanets, Spectral resolution, Planets

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Proceedings Article | 11 July 2008 Paper

MUSE: feeding and mounting 24 spectrographs

Harald Nicklas, Walter Seifert, Wenli Xu, Denni Hofmann, Christof Köhler, Magali Loupias

Proc. SPIE. 7014, Ground-based and Airborne Instrumentation for Astronomy II

KEYWORDS: Telescopes, Mirrors, Spectrographs, Aerospace engineering, Lenses, Earthquakes, Space telescopes, Relays, Optical mounts, Channel projecting optics

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Proceedings Article | 27 June 2006 Paper

LINC-NIRVANA: optical design of an interferometric imaging camera

P. Bizenberger, E. Diolaiti, S. Egner, T. Herbst, R. Ragazzoni, D. Reymann, W. Xu

Proc. SPIE. 6269, Ground-based and Airborne Instrumentation for Astronomy

KEYWORDS: Diffraction, Point spread functions, Telescopes, Mirrors, Optical design, Cameras, Interfaces, Interferometry, Collimators, Optical alignment

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Proceedings Article | 25 October 2004 Paper

LINC-NIRVANA: mechanical challanges of the MCAO wavefront sensor

Roberto Soci, Roberto Ragazzoni, Thomas Herbst, Jacopo Farinato, Wolfgang Gaessler, Harald Baumeister, Ralf-Rainer Rohloff, Emiliano Diolaiti, Wenli Xu, David Andersen, Sebastian Egner, Carmelo Arcidiacono, Matteo Lombini, Monica Ebert, Armin Boehm, Norbert Muench, Marco Xompero

Proc. SPIE. 5490, Advancements in Adaptive Optics

KEYWORDS: Optical components, Telescopes, Mirrors, Stars, Cameras, Sensors, Wavefront sensors, Adaptive optics, Finite element methods, Selenium

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Proceedings Article | 25 October 2004 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

Proc. SPIE. 5490, Advancements in Adaptive Optics

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

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Proceedings Article | 25 October 2004 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

Proc. SPIE. 5490, Advancements in Adaptive Optics

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

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Proceedings Article | 30 September 2004 Paper

LUCIFER status report, summer 2004

Holger Mandel, Immo Appenzeller, Walter Seifert, Harald Baumeister, Peter Bizenberger, Ralf-Juergen Dettmar, Hans Gemperlein, Bernhard Grimm, Tom Herbst, Reiner Hofmann, Marcus Jutte, Werner Laun, Michael Lehmitz, Sebastiano Ligori, Rainer Lenzen, Kai Polsterer, Ralf-Rainer Rohloff, Andreas Schuetze, Andreas Seltmann, Peter Weiser, Harald Weisz, Wenli Xu

Proc. SPIE. 5492, Ground-based Instrumentation for Astronomy

KEYWORDS: Near infrared, Optical filters, Mirrors, Spectrographs, Cameras, Sensors, Manufacturing, Control systems, Java, Molybdenum

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Proceedings Article | 7 July 2004 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

Proc. SPIE. 5382, Second Backaskog Workshop on Extremely Large Telescopes

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

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Proceedings Article | 7 July 2004 Paper

Layer-Oriented on paper, laboratory, and soon on the sky

Jacopo Farinato, Roberto Ragazzoni, Carmelo Arcidiacono, Bagnara Paolo, Andrea Baruffolo, Harald Baumeister, Raffaella Bisson, Hermann Bohnhardt, Angela Brindisi, Joar Brynnel, Massimo Cecconi, Julien Coyne, Bernhard Delabre, Emiliano Diolaiti, Rob Donaldson, Enrico Fedrigo, Francis Franza, Wolfgang Gassler, Adriano Ghedina, Thomas Herbst, Norbert Hubin, Stephan Kellner, Johann Kolb, Jean-Louis Lizon, Matteo Lombini, Enrico Marchetti, Gianluigi Meneghini, Lars Mohr, Roland Reiss, Ralf-Rainer Rohloff, Roberto Soci, Elise Vernet, Robert Weiss, Marco Xompero, Wenli Xu

Proc. SPIE. 5382, Second Backaskog Workshop on Extremely Large Telescopes

KEYWORDS: Telescopes, Mirrors, Stars, Sensors, Interferometry, Wavefront sensors, Wavefronts, Adaptive optics, Deformable mirrors, Prototyping

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Proceedings Article | 24 December 2003 Paper

Layer-oriented MCAO projects and experiments: an update

Roberto Ragazzoni, Roberto Soci, Carmelo Arcidiacono, Andrea Baruffolo, Harald Baumeister, Raffaella Bisson, Hermann Bohnhardt, Angela Brindisi, Julien Coyne, Emiliano Diolaiti, Jacopo Farinato, Wolfgang Gassler, Tom Herbst, Matteo Lombini, Gianluigi Meneghini, Lars Mohr, Ralf-Rainer Rohloff, Elise Vernet-Viard, Robert Weiss, Marco Xompero, Wenli Xu

Proc. SPIE. 5169, Astronomical Adaptive Optics Systems and Applications

KEYWORDS: Telescopes, Astronomy, Stars, Interferometers, Sensors, Interferometry, Wavefront sensors, Adaptive optics, Astronomical telescopes, Prototyping

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Proceedings Article | 7 March 2003 Paper

LUCIFER: a multimode NIR instrument for the LBT

Walter Seifert, Immo Appenzeller, Harald Baumeister, Peter Bizenberger, Dominik Bomans, Ralf-Juergen Dettmar, Bernard Grimm, Tom Herbst, Reiner Hofmann, Marcus Juette, Werner Laun, Michael Lehmitz, Roland Lemke, Rainer Lenzen, Holger Mandel, K. Polsterer, Ralf-Rainer Rohloff, A. Schuetze, Andreas Seltmann, Niranjan Thatte, Peter Weiser, Wenli Xu

Proc. SPIE. 4841, Instrument Design and Performance for Optical/Infrared Ground-based Telescopes

KEYWORDS: Near infrared, Telescopes, Mirrors, Electronics, Cameras, Sensors, Imaging spectroscopy, Control systems, Molybdenum, Spectroscopes

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Proceedings Article | 7 February 2003 Paper

Visible MCAO channel for NIRVANA at the LBT

Roberto Ragazzoni, Tom Herbst, Wolfgang Gaessler, David Andersen, Carmelo Arcidiacono, Andrea Baruffolo, Harald Baumeister, Peter Bizenberger, Emiliano Diolaiti, Simone Esposito, Jacopo Farinato, Hans Rix, Ralf-Rainer Rohloff, Armando Riccardi, Piero Salinari, Roberto Soci, Elise Vernet-Viard, Wenli Xu

Proc. SPIE. 4839, Adaptive Optical System Technologies II

KEYWORDS: Telescopes, Mirrors, Stars, Cameras, Sensors, Interferometry, Wavefront sensors, Deformable mirrors, Atmospheric corrections, Space telescopes

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Proceedings Article | 7 February 2003 Paper

Phase screens for astronomical multiconjugate adaptive optics: application to MAPS

David Butler, Enrico Marchetti, Jochen Bahr, Wenli Xu, Stefan Hippler, Markus Kasper, Rodolphe Conan

Proc. SPIE. 4839, Adaptive Optical System Technologies II

KEYWORDS: Monochromatic aberrations, Telescopes, Refractive index, Mirrors, Optical design, Glasses, Wavefronts, Adaptive optics, Turbulence, Atmospheric optics

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Proceedings Article | 30 January 2003 Paper

Optical glasses with high NIR transmission

Wenli Xu, Walter Seifert

Proc. SPIE. 4842, Specialized Optical Developments in Astronomy

KEYWORDS: Near infrared, Refractive index, Optical design, Lenses, Cameras, Glasses, Zinc, Colorimetry, Infrared radiation, Infrared materials

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Proceedings Article | 16 August 2000 Paper

Commissioning of the FORS instruments at the ESO VLT

Walter Seifert, Immo Appenzeller, Walter Fuertig, Otmar Stahl, Eckhardt Sutorius, Wenli Xu, Wolfgang Gaessler, Reinhold Haefner, Hans-Joachim Hess, Wolfgang Hummel, Karl-Heinz Mantel, Wolfgang Meisl, Bernard Muschielok, Karl Tarantik, Harald Nicklas, Gero Rupprecht, Claudio Cumani, Thomas Szeifert, Jason Spyromilio

Proc. SPIE. 4008, Optical and IR Telescope Instrumentation and Detectors

KEYWORDS: Telescopes, Stars, Polarization, Sensors, Calibration, Imaging spectroscopy, Image quality, Charge-coupled devices, Astronomical imaging, Spectroscopes

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Proceedings Article | 16 August 2000 Paper

Low-resolution spectrograph for LAMOST

Yongtian Zhu, Wenli Xu

Proc. SPIE. 4008, Optical and IR Telescope Instrumentation and Detectors

KEYWORDS: Optical fibers, Telescopes, Spectrographs, Optical design, Cameras, Reflectivity, Collimators, Charge-coupled devices, Lawrencium, Diffraction gratings

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Proceedings Article | 16 August 2000 Paper

LUCIFER: a NIR spectrograph and imager for the LBT

Holger Mandel, Immo Appenzeller, Dominik Bomans, Frank Eisenhauer, Bernard Grimm, Thomas Herbst, Reiner Hofmann, Michael Lehmitz, Roland Lemke, Matthew Lehnert, Rainer Lenzen, Thomas Luks, Ralf Mohr, Walter Seifert, Niranjan Thatte, Peter Weiser, Wenli Xu

Proc. SPIE. 4008, Optical and IR Telescope Instrumentation and Detectors

KEYWORDS: Optical fibers, Diffraction, Telescopes, Mirrors, Electronics, Cameras, Sensors, Imaging spectroscopy, Control systems, Spectroscopes

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