Mr. Hans-Joachim Hess Profile

Hans-Joachim Hess

at Univ-Sternwarte München

SPIE Involvement:

Author

Publications (26)

Proceedings Article | 29 August 2022 Poster + Paper

The MICADO main selection mechanism: final design

F. Lang-Bardl, A. Monna, F. Grupp, R. Bender, S. Annadevara, C. Goessl, H. J. Hess, R. Katterloher, H. Kravcar, F. Kummer, J. Schlichter, M. Wegner, V. Ziel

Proceedings Volume 12184, 1218434 (2022) https://doi.org/10.1117/12.2629043

KEYWORDS: Imaging systems, Switches, Optical components, Image resolution, Optical mounts, Spectroscopy, Sensors, Cryogenics, Interfaces, Cameras

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Proceedings Article | 29 August 2022 Poster

PLC based realization of the cryogenic and cold mechanism control system for MICADO

Hans-Joachim Hess, Hanna Kellerman, Sriprasanna Srivalli Annadevara, Helmut Kravcar, Felix Kummer, Jörg Schlichter, Anna Monna, Florian Lang-Bardl, Ralf Bender

Proceedings Volume 12184, 121843J (2022) https://doi.org/10.1117/12.2630287

KEYWORDS: Photonic integrated circuits, Control systems, Cryogenics, Control systems design, Telecommunications, Spectroscopes, Sensors, Safety, Near infrared spectroscopy, Imaging spectroscopy

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Proceedings Article | 30 July 2018 Open Access

The MICADO first light imager for the ELT: overview, operation, simulation

R. Davies, J. Alves, Y. Clénet, F. Lang-Bardl, H. Nicklas, J.-U. Pott, R. Ragazzoni, E. Tolstoy, P. Amico, H. Anwand-Heerwart, S. Barboza, L. Barl, P. Baudoz, R. Bender, N. Bezawada, P. Bizenberger, W. Boland, P. Bonifacio, B. Borgo, T. Buey, F. Chapron, F. Chemla, M. Cohen, O. Czoske, V. Déo, K. Disseau, S. Dreizler, O. Dupuis, M. Fabricius, R. Falomo, P. Fedou, N. Förster Schreiber, V. Garrel, N. Geis, H. Gemperlein, E. Gendron, R. Genzel, S. Gillessen, M. Glück, F. Grupp, M. Hartl, M. Häuser, H.-J. Hess, R. Hofferbert, U. Hopp, V. Hörmann, Z. Hubert, E. Huby, J.-M. Huet, V. Hutterer, D. Ives, A. Janssen, W. Jellema, W. Kausch, F. Kerber, H. Kravcar, B. Le Ruyet, K. Leschinski, C. Mandla, M. Manhart, D. Massari, S. Mei, F. Merlin, L. Mohr, A. Monna, N. Muench, F. Müller, G. Musters, R. Navarro, U. Neumann, N. Neumayer, J. Niebsch, M. Plattner, N. Przybilla, S. Rabien, R. Ramlau, J. Ramos, S. Ramsay, P. Rhode, A. Richter, J. Richter, H.-W. Rix, G. Rodeghiero, R.-R. Rohloff, M. Rosensteiner, G. Rousset, J. Schlichter, J. Schubert, A. Sevin, R. Stuik, E. Sturm, J. Thomas, N. Tromp, G. Verdoes-Kleijn, F. Vidal, R. Wagner, M. Wegner, W. Zeilinger, J. Ziegleder, B. Ziegler, G. Zins

Proceedings Volume 10702, 107021S (2018) https://doi.org/10.1117/12.2311483

KEYWORDS: Adaptive optics, Distortion, Planets

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Proceedings Article | 27 July 2018 Paper

MICADO instrument control approach in context of ESO ELT standards

Marco Haeuser, Joerg Schlichter, Hans-Joachim Hess, Helmut Kravcar, Josef Richter, Michael Wegner

Proceedings Volume 10702, 107028Z (2018) https://doi.org/10.1117/12.2312048

KEYWORDS: Control systems, Photonic integrated circuits, Sensors, Cryogenics, Detector arrays, Telecommunications, Imaging systems, Adaptive optics, Calibration, Control systems design

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MICADO will equip the ELT with a first light capability for diffraction limited imaging at near-infrared wave- lengths. The instrument’s observing modes focus on various flavours of imaging, including astrometric, high contrast, and time resolved. There is also a single object spectroscopic mode optimised for wavelength coverage at moderately high resolution.1 Due to ESO’s technology standards evolution from VLT to ELT, MICADO will manifest the combined, PLC based soft- and hardware control. The evolution of ESO’s technology design guidelines is on the one hand triggered by the ongoing developments in modern days industry and consumer tech- nology. On the other hand, ELT’s sheer dimensions request increasingly complex and smart solutions onwards controlling and monitoring such huge instruments. ESO’s control concept is based on a two layer approach: PLCs are responsible for low-level hardware control (in a real-time fashion, if necessary), while software running on a Linux workstation implements the astronomic business logic of the control system. Development is eased by the fact that ESO delivers libraries for the control of many standard hardware components. A very interesting feature of this approach is the possibility to run C++ code natively inside a PLC real-time environment. This will be used for the control of complex mechanisms like the MICADO Atmoshperic Dispersion Corrector (ADC). This contribution provides an overview of the key functionality of the instrument focusing on the mechanisms inside the cryostat, and an overview of the cryogenic control. Because of hardware and cryogenic safety reasons, the cryostat control PLC system will be designed as a closed PLC based control system. Hence commands will only be accepted from a human machine interface located next to the cryostat itself. All cryostat parameters and according sensor readings will be published via OpcUA, allowing for full remote cryostat monitoring. In contrast, the instrument control PLC system will interact with the higher level software using the advantages of the industrial OpcUA communication standard and will therefore allow for remote control. Further configuration and commissioning of those mechanisms is made conveniently accessible via this approach. All this is based on ESO’s concept for Line replaceable Units (LRU), which utilizes Beckhoff PLC units to ensure maintainability, availability.

Proceedings Article | 11 July 2018 Paper

USM Test Cryostat for the MICADO project: first steps in stabilizing and testing the cryostat

A. Monna, F. Lang-Bardl, F. Grupp, R. Bender, M. Haeuser, H. J. Hess, U. Hopp, H. Kravcar, J. Richter, J. Schlichter, H. Gebler

Proceedings Volume 10702, 1070295 (2018) https://doi.org/10.1117/12.2312492

KEYWORDS: Cryogenics, Optical testing

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Proceedings Article | 11 July 2018 Paper

The MICADO Main Selection Mechanism (MSM): an operational mode selector for the MICADO instrument

F. Lang-Bardl, A. Monna, F. Grupp, R. Bender, M. Haeuser, H.-J. Hess, U. Hopp, H. Kravcar, J. Richter, J. Schlichter

Proceedings Volume 10702, 107028Y (2018) https://doi.org/10.1117/12.2311959

KEYWORDS: Interfaces, Cryogenics, Switches, Optical components, Imaging systems, Thermal modeling, Actuators, Spectroscopy, Mirrors, Image resolution

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MICADO, the Multi AO Imaging Camera for Deep Observations, is one of the first light instruments for the ELT, currently under construction by the European Southern Observatory (ESO) on Cerro Armazones in Chile. It is built by a huge consortium with partners from the Netherlands, Austria, France, Italy, Finland and Germany under the lead of the Max-Planck-Institute for extraterrestrial Physics in Garching. The instrument will operate in the NIR wavelength range, thus is developed as a cryogenic instrument to work under vacuum conditions. It can be used as an imaging camera in a high and low resolution mode, a spectrometer and also as a coronagraph. For calibration purposes a so called ”pupil imager” mode will also be implemented. To switch between the operational modes MICADO will use the MSM to insert different optical modules to the fixed components of the High Resolution Imager (HRI) inside the cryostat. All moving parts have to operate under vacuum and at cryogenic temperatures. The MSM consists of a rotating platform, where the optical modules are mounted on. To lower the friction inside the mechanism we decided to use several small bearings to support the platform instead of a central big one. The small bearings are placed in a way, that the movement of the platform is limited to a rotation. Some of the bearings will be preloaded by springs to take also CTE differences or temperature gradients during the cool down and warm up phases into account. The mechanism will be driven by a cryogenic Phytron stepper motor with an integrated planetary gear box. Switches will be used to limit the rotation of the platform to the necessary range. Because of the challenging requirements on repositioning of the optical modules inside the science beam, we will use an indent mechanism. We are still investigating if the indent mechanism has to be actively driven or can be implemented as a passive version. The necessary optics to switch between the operational modes are designed as individual pre-aligned modules, each with a defined mechanical and thermal interface to the rotating platform. The Low Resolution Imager (LRI) consists of two flat mirrors, blocking some of the fixed components of the HRI. The spectrometer will use two reflective gratings, one acting as the main and one as a cross disperser. The cross disperser separates the overlaying orders on the focal plane array. The pupil viewer consists like the LRI module of two flat mirrors and an additional lens imaging the pupil to the focal plane. In this paper we will present the current mechanical design and first results of the structural and thermal FEM analyses we performed. We will also highlight first ideas on integration and alignment. A second paper (A. Monna et al., same proceedings) concentrates on the cryogenic setups we perform inside a cryostat to proof proper functionality of the chosen components and designs.

Proceedings Article | 9 August 2016 Open Access

MICADO: first light imager for the E-ELT

R. Davies, J. Schubert, M. Hartl, J. Alves, Y. Clénet, F. Lang-Bardl, H. Nicklas, J.-U. Pott, R. Ragazzoni, E. Tolstoy, T. Agocs, H. Anwand-Heerwart, S. Barboza, P. Baudoz, R. Bender, P. Bizenberger, A. Boccaletti, W. Boland, P. Bonifacio, F. Briegel, T. Buey, F. Chapron, M. Cohen, O. Czoske, S. Dreizler, R. Falomo, P. Feautrier, N. Förster Schreiber, E. Gendron, R. Genzel, M. Glück, D. Gratadour, R. Greimel, F. Grupp, M. Häuser, M. Haug, J. Hennawi, H. J. Hess, V. Hörmann, R. Hofferbert, U. Hopp, Z. Hubert, D. Ives, W. Kausch, F. Kerber, H. Kravcar, K. Kuijken, M. Leitzinger, K. Leschinski, D. Massari, S. Mei, F. Merlin, L. Mohr, A. Monna, F. Müller, R. Navarro, M. Plattner, N. Przybilla, R. Ramlau, S. Ramsay, T. Ratzka, P. Rhode, J. Richter, H.-W. Rix, G. Rodeghiero, R.-R. Rohloff, G. Rousset, R. Ruddenklau, V. Schaffenroth, J. Schlichter, A. Sevin, R. Stuik, E. Sturm, J. Thomas, N. Tromp, M. Turatto, G. Verdoes-Kleijn, F. Vidal, R. Wagner, M. Wegner, W. Zeilinger, B. Ziegler, G. Zins

Proceedings Volume 9908, 99081Z (2016) https://doi.org/10.1117/12.2233047

KEYWORDS: Adaptive optics, Cameras, Adaptive optics, Cameras, Stars, Mirrors, Galactic astronomy, Imaging spectroscopy, Interfaces, Spectroscopy, Zoom lenses, Sensors

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Proceedings Article | 9 August 2016 Paper

The Wendelstein three channel imager (3KK): alignment, commissioning, and first results

F. Lang-Bardl, R. Bender, C. Goessl, F. Grupp, H.-J. Hess, J. Kaminski, K. Hodapp, U. Hopp, S. Jacobson, H. Kravcar, A. Monna, W. Mitsch, J. Schlichter, M. Wegner

Proceedings Volume 9908, 990844 (2016) https://doi.org/10.1117/12.2232039

KEYWORDS: Imaging systems, Cameras, Optical filters, Near infrared, Observatories, Beam splitters, Telescopes, Channel projecting optics, Sensors, Image quality

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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

Proceedings Volume 9147, 91476I (2014) https://doi.org/10.1117/12.2057253

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

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Proceedings Article | 24 July 2014 Paper

4MOST: 4-metre Multi-Object Spectroscopic Telescope

Roelof de Jong, Sam Barden, Olga Bellido-Tirado, Joar Brynnel, Cristina Chiappini, Éric Depagne, Roger Haynes, Diana Johl, Daniel Phillips, Olivier Schnurr, Axel Schwope, Jakob Walcher, Svend Bauer, Gabriele Cescutti, Maria-Rosa Cioni, Frank Dionies, Harry Enke, Dionne Haynes, Andreas Kelz, Francisco Kitaura, Georg Lamer, Ivan Minchev, Volker Müller, Sebastián Nuza, Jean-Christophe Olaya, Tilmann Piffl, Emil Popow, Allar Saviauk, Matthias Steinmetz, Uğur Ural, Monica Valentini, Roland Winkler, Lutz Wisotzki, Wolfgang Ansorge, Manda Banerji, Eduardo Gonzalez Solares, Mike Irwin, Robert Kennicutt, David King, Richard McMahon, Sergey Koposov, Ian Parry, Xiaowei Sun, Nicholas Walton, Gert Finger, Olaf Iwert, Mirko Krumpe, Jean-Louis Lizon, Vincenzo Mainieri, Jean-Philippe Amans, Piercarlo Bonifacio, Matthieu Cohen, Patrick François, Pascal Jagourel, Shan Mignot, Frédéric Royer, Paola Sartoretti, Ralf Bender, Hans-Joachim Hess, Florian Lang-Bardl, Bernard Muschielok, Jörg Schlichter, Hans Böhringer, Thomas Boller, Angela Bongiorno, Marcella Brusa, Tom Dwelly, Andrea Merloni, Kirpal Nandra, Mara Salvato, Johannes Pragt, Ramón Navarro, Gerrit Gerlofsma, Ronald Roelfsema, Gavin Dalton, Kevin Middleton, Ian Tosh, Corrado Boeche, Elisabetta Caffau, Norbert Christlieb, Eva Grebel, Camilla Hansen, Andreas Koch, Hans-G. Ludwig, Holger Mandel, Andreas Quirrenbach, Luca Sbordone, Walter Seifert, Guido Thimm, Amina Helmi, Scott trager, Thomas Bensby, Sofia Feltzing, Gregory Ruchti, Bengt Edvardsson, Andreas Korn, Karin Lind, Wilfried Boland, Matthew Colless, Gabriella Frost, James Gilbert, Peter Gillingham, Jon Lawrence, Neville Legg, Will Saunders, Andrew Sheinis, Simon Driver, Aaron Robotham, Roland Bacon, Patrick Caillier, Johan Kosmalski, Florence Laurent, Johan Richard

Proceedings Volume 9147, 91470M (2014) https://doi.org/10.1117/12.2055826

KEYWORDS: Galactic astronomy, Spectrographs, Telescopes, Stars, Spine, Spectroscopy, Spectroscopes, X-rays, Observatories, Calibration

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Proceedings Article | 24 July 2014 Paper

Presenting a high accuracy Theta-Phi-style fiber-positioner prototype with a 15-mm pitch

Marco Haeuser, Florian Lang-Bardl, Josef Richter, Hans-Joachim Hess, Adrian Degwert, Adolf Karasz, Ralf Kosyra, Ulrich Hopp, Ralf Bender

Proceedings Volume 9147, 91476V (2014) https://doi.org/10.1117/12.2056300

KEYWORDS: Electromagnetic coupling, Electronics, Prototyping, Control systems, Metrology, Calibration, Motion controllers, Electroluminescent displays, Observatories, Microcontrollers

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Proceedings Article | 8 July 2014 Paper

MOONS: the Multi-Object Optical and Near-infrared Spectrograph for the VLT

M. Cirasuolo, J. Afonso, M. Carollo, H. Flores, R. Maiolino, E. Oliva, S. Paltani, Leonardo Vanzi, Christopher Evans, M. Abreu, David Atkinson, C. Babusiaux, Steven Beard, F. Bauer, M. Bellazzini, Ralf Bender, P. Best, N. Bezawada, P. Bonifacio, A. Bragaglia, I. Bryson, D. Busher, A. Cabral, K. Caputi, M. Centrone, F. Chemla, A. Cimatti, M-R. Cioni, G. Clementini, J. Coelho, D. Crnojevic, E. Daddi, J. Dunlop, S. Eales, S. Feltzing, A. Ferguson, M. Fisher, A. Fontana, J. Fynbo, B. Garilli, G. Gilmore, A. Glauser, I. Guinouard, F. Hammer, P. Hastings, A. Hess, R. Ivison, P. Jagourel, M. Jarvis, L. Kaper, G. Kauffman, A. Kitching, A. Lawrence, D. Lee, B. Lemasle, G. Licausi, S. Lilly, D. Lorenzetti, D. Lunney, F. Mannucci, R. McLure, D. Minniti, D. Montgomery, B. Muschielok, K. Nandra, R. Navarro, P. Norberg, S. Oliver, L. Origlia, N. Padilla, J. Peacock, F. Pedichini, J. Peng, L. Pentericci, J. Pragt, M. Puech, S. Randich, P. Rees, A. Renzini, N. Ryde, M. Rodrigues, I. Roseboom, F. Royer, R. Saglia, A. Sanchez, R. Schiavon, H. Schnetler, D. Sobral, R. Speziali, D. Sun, R. Stuik, A. Taylor, W. Taylor, S. Todd, E. Tolstoy, M. Torres, M. Tosi, E. Vanzella, L. Venema, F. Vitali, M. Wegner, M. Wells, V. Wild, G. Wright, G. Zamorani, M. Zoccali

Proceedings Volume 9147, 91470N (2014) https://doi.org/10.1117/12.2056012

KEYWORDS: Galactic astronomy, Spectrographs, Stars, Spectral resolution, Spectroscopy, Astronomical imaging, Sensors, Cameras, Control systems, Astronomy

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Proceedings Article | 5 October 2012 Paper

4MOST: 4-metre multi-object spectroscopic telescope

Roelof de Jong, Olga Bellido-Tirado, Cristina Chiappini, Éric Depagne, Roger Haynes, Diana Johl, Olivier Schnurr, Axel Schwope, Jakob Walcher, Frank Dionies, Dionne Haynes, Andreas Kelz, Francisco Kitaura, Georg Lamer, Ivan Minchev, Volker Müller, Sebastián Nuza, Jean-Christophe Olaya, Tilmann Piffl, Emil Popow, Matthias Steinmetz, Ugur Ural, Mary Williams, Roland Winkler, Lutz Wisotzki, Wolfgang Ansorge, Manda Banerji, Eduardo Gonzalez Solares, Mike Irwin, Robert Kennicutt, Dave King, Richard McMahon, Sergey Koposov, Ian Parry, David Sun, Nicholas Walton, Gert Finger, Olaf Iwert, Mirko Krumpe, Jean-Louis Lizon, Mainieri Vincenzo, Jean-Philippe Amans, Piercarlo Bonifacio, Mathieu Cohen, Patrick Francois, Pascal Jagourel, Shan Mignot, Frédéric Royer, Paola Sartoretti, Ralf Bender, Frank Grupp, Hans-Joachim Hess, Florian Lang-Bardl, Bernard Muschielok, Hans Böhringer, Thomas Boller, Angela Bongiorno, Marcella Brusa, Tom Dwelly, Andrea Merloni, Kirpal Nandra, Mara Salvato, Johannes Pragt, Ramón Navarro, Gerrit Gerlofsma, Ronald Roelfsema, Gavin Dalton, Kevin Middleton, Ian Tosh, Corrado Boeche, Elisabetta Caffau, Norbert Christlieb, Eva Grebel, Camilla Hansen, Andreas Koch, Hans-G. Ludwig, Andreas Quirrenbach, Luca Sbordone, Walter Seifert, Guido Thimm, Trifon Trifonov, Amina Helmi, Scott Trager, Sofia Feltzing, Andreas Korn, Wilfried Boland

Proceedings Volume 8446, 84460T (2012) https://doi.org/10.1117/12.926239

KEYWORDS: Spectrographs, Telescopes, Stars, Space telescopes, Calibration, Actuators, Optical instrument design, Spectral resolution, Spectroscopy, Galactic astronomy

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Proceedings Article | 24 September 2012 Open Access

Status of the KMOS multi-object near-infrared integral field spectrograph

Ray Sharples, Ralf Bender, Alex Agudo Berbel, Richard Bennett, Naidu Bezawada, Michele Cirasuolo, Paul Clark, George Davidson, Richard Davies, Roger Davies, Marc Dubbeldam, Alasdair Fairley, Gert Finger, Reinhard Genzel, Reinhold Haefner, Achim Hess, Ian Lewis, David Montgomery, John Murray, Bernard Muschielok, Natascha Förster-Schreiber, Jeff Pirard, Suzanne Ramsay, Phil Rees, Josef Richter, David Robertson, Ian Robson, Stephen Rolt, Roberto Saglia, Jörg Schlichter, Mathias Tecza, Stephen Todd, Michael Wegner, Erich Wiezorrek

Proceedings Volume 8446, 84460K (2012) https://doi.org/10.1117/12.926021

KEYWORDS: Spectrographs, Sensors, Mirrors, Calibration, Spectral resolution, Image quality, Astronomical imaging, Electronics, Off axis mirrors, Lamps

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Proceedings Article | 24 September 2012 Paper

MOONS: a multi-object optical and near-infrared spectrograph for the VLT

M. Cirasuolo, J. Afonso, R. Bender, P. Bonifacio, C. Evans, L. Kaper, Ernesto Oliva, Leonardo Vanzi, Manuel Abreu, Eli Atad-Ettedgui, Carine Babusiaux, Franz Bauer, Philip Best, Naidu Bezawada, Ian Bryson, Alexandre Cabral, Karina Caputi, Mauro Centrone, Fanny Chemla, Andrea Cimatti, Maria-Rosa Cioni, Gisella Clementini, João Coelho, Emanuele Daddi, James Dunlop, Sofia Feltzing, Annette Ferguson, Hector Flores, Adriano Fontana, Johan Fynbo, Bianca Garilli, Adrian Glauser, Isabelle Guinouard, Jean-François Hammer, Peter Hastings, Hans-Joachim Hess, Rob Ivison, Pascal Jagourel, Matt Jarvis, G. Kauffman, A. Lawrence, D. Lee, G. Li Causi, S. Lilly, D. Lorenzetti, R. Maiolino, F. Mannucci, R. McLure, D. Minniti, D. Montgomery, B. Muschielok, K. Nandra, R. Navarro, P. Norberg, L. Origlia, N. Padilla, J. Peacock, F. Pedicini, L. Pentericci, J. Pragt, M. Puech, S. Randich, A. Renzini, N. Ryde, M. Rodrigues, F. Royer, R. Saglia, A. Sánchez, H. Schnetler, D. Sobral, R. Speziali, S. Todd, E. Tolstoy, M. Torres, L. Venema, F. Vitali, M. Wegner, M. Wells, V. Wild, G. Wright

Proceedings Volume 8446, 84460S (2012) https://doi.org/10.1117/12.925871

KEYWORDS: Galactic astronomy, Spectrographs, Spectral resolution, Spectroscopy, Stars, Astronomical imaging, Astronomy, Near infrared spectroscopy, Spine, Optical fibers

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Proceedings Article | 24 September 2012 Paper

A fibre positioner solution for the 4MOST instrument

Florian Lang-Bardl, Ralf Bender, Frank Grupp, Marco Häuser, Hans-Joachim Hess, Veronika Junk, Ralf Kosyra, Bernard Muschielok, Josef Richter, Jörg Schlichter, Christoph Schwab

Proceedings Volume 8446, 844661 (2012) https://doi.org/10.1117/12.925969

KEYWORDS: Staring arrays, Telescopes, Electronics, Spectrographs, Control systems, Mirrors, Microcontrollers, Metrology, Astronomical imaging, Optical instrument design

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Proceedings Article | 15 July 2010 Paper

Implementation of the control electronics for KMOS instrument

Hans-Joachim Hess, Ivica Ilijevski, Helmut Kravcar, Josef Richter, Josef Rühfel, Christoph Schwab

Proceedings Volume 7735, 77352Q (2010) https://doi.org/10.1117/12.857988

KEYWORDS: Control systems, Electronics, Switches, Sensors, Calibration, Power supplies, Control systems design, Cryogenics, Local area networks, Optical filters

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Proceedings Article | 15 July 2010 Open Access

MICADO: the E-ELT adaptive optics imaging camera

Richard Davies, N. Ageorges, L. Barl, L. Bedin, R. Bender, P. Bernardi, F. Chapron, Y. Clenet, A. Deep, E. Deul, M. Drost, F. Eisenhauer, R. Falomo, G. Fiorentino, N. Förster Schreiber, E. Gendron, R. Genzel, D. Gratadour, L. Greggio, F. Grupp, E. Held, T. Herbst, H.-J. Hess, Z. Hubert, K. Jahnke, K. Kuijken, D. Lutz, D. Magrin, B. Muschielok, R. Navarro, E. Noyola, T. Paumard, G. Piotto, R. Ragazzoni, A. Renzini, G. Rousset, H.-W. Rix, R. Saglia, L. Tacconi, M. Thiel, E. Tolstoy, S. Trippe, N. Tromp, E. Valentijn, G. Verdoes Kleijn, M. Wegner

Proceedings Volume 7735, 77352A (2010) https://doi.org/10.1117/12.856379

KEYWORDS: Adaptive optics, Calibration, Stars, Sensors, Mirrors, Point spread functions, Optical filters, Imaging spectroscopy, Cameras, Galactic astronomy

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Proceedings Article | 15 July 2010 Open Access

Recent progress on the KMOS multi-object integral-field spectrograph for ESO VLT

Ray Sharples, Ralf Bender, Alex Agudo Berbel, Richard Bennett, Naidu Bezawada, Nicolas Bouché, David Bramall, Mark Casali, Michele Cirasuolo, Paul Clark, Mark Cliffe, Richard Davies, Roger Davies, Niv Drory, Marc Dubbeldam, Alasdair Fairley, Gert Finger, Reinhard Genzel, Reinhold Haefner, Achim Hess, Paul Jeffers, Ian Lewis, David Montgomery, John Murray, Bernard Muschielok, Natascha Förster Schreiber, Jean Pirard, Suzie Ramsay-Howat, Philip Rees, Josef Richter, David Robertson, Ian Robson, Stephen Rolt, Roberto Saglia, Joerg Schlichter, Mathias Tecza, Stephen Todd, Michael Wegner, Erich Wiezorrek

Proceedings Volume 7735, 773515 (2010) https://doi.org/10.1117/12.856125

KEYWORDS: Spectrographs, Sensors, Astronomical imaging, Spectroscopy, Mirrors, Electronics, Off axis mirrors, Manufacturing, Infrared spectroscopy, Observatories

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Proceedings Article | 28 June 2006 Open Access

Design of the KMOS multi-object integral-field spectrograph

Ray Sharples, Ralf Bender, Richard Bennett, Keith Burch, Paul Carter, Mark Casali, Paul Clark, Robert Content, Richard Davies, Roger Davies, Marc Dubbeldam, Gert Finger, Reinhard Genzel, Reinhold Haefner, Achim Hess, Markus Kissler-Patig, Ken Laidlaw, Matt Lehnert, Ian Lewis, Alan Moorwood, Bernard Muschielok, Natascha Förster-Schreiber, Jeff Pirard, Suzanne Ramsay Howat, Phil Rees, Josef Richter, David Robertson, Ian Robson, Roberto Saglia, Matthias Tecza, Naranjan Thatte, Stephen Todd, Michael Wegner

Proceedings Volume 6269, 62691C (2006) https://doi.org/10.1117/12.669781

KEYWORDS: Spectrographs, Mirrors, Astronomical imaging, Spectroscopy, Galactic astronomy, Calibration, Sensors, Astronomy, Infrared spectroscopy, Prototyping

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Proceedings Article | 15 June 2006 Paper

The OmegaCAM 16K x 16K CCD detector system for the ESO VLT Survey Telescope (VST)

Olaf Iwert, D. Baade, A. Balestra, A. Baruffolo, A. Bortolussi, F. Christen, C. Cumani, S. Deiries, M. Downing, C. Geimer, G. Hess, J. Hess, K. Kuijken, J. Lizon, B. Muschielok, H. Nicklas, R. Reiss, J. Reyes, A. Silber, J. Thillerup, E. Valentijn

Proceedings Volume 6276, 62760A (2006) https://doi.org/10.1117/12.671599

KEYWORDS: Charge-coupled devices, Sensors, Head, Cooling systems, CCD image sensors, Telescopes, Camera shutters, Space telescopes, Control systems, Interfaces

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A 16K x 16K, 1 degree x 1 degree field, detector system was developed by ESO for the OmegaCAM instrument for use on the purpose built ESO VLT Survey Telescope (VST). The focal plane consists of an 8 x 4 mosaic of 2K x 4K 15um pixel e2v CCDs and four 2K x 4K CCDs on the periphery for the opto-mechanical control of the telescope. The VST is a single instrument telescope. This placed stringent reliability requirements on the OmegaCAM detector system such as 10 years lifetime and maximum downtime of 1.5 %. Mounting at Cassegrain focus required a highly autonomous self-contained cooling system that could deliver 65 W of cooling power. Interface space for the detector head was severely limited by the way the instrument encloses the CCD cryostat. The detector system features several novel ideas tailored to meet these requirements and described in this paper: Key design drivers of the detector head were the easily separable but precisely aligned connections to the optical field flattener on the top and the cooling system at the bottom. Material selection, surface treatment, specialized coatings and in-situ plasma cleaning were crucial to prevent contamination of the detectors. Inside the cryostat, cryogenic and electrical connections were disentangled to keep the configuration modular, integration friendly and the detectors in a safe condition during all mounting steps. A compact unit for logging up to 125 Pt100 temperature sensors and associated thermal control loops was developed (ESO's new housekeeping unit PULPO 2), together with several new modular Pt100 packaging and mounting concepts. The electrical grouping of CCDs based on process parameters and test results is explained. Three ESO standardized FIERA CCD controllers in different configurations are used. Their synchronization mechanism for read-out is discussed in connection with the CCD grouping scheme, the shutter, and the integrated guiding and image analysis facility with four independent 2K x 4K CCDs. An illustration of the data chain performance from CCD output to storage on hard-disk gives an impression of the challenge to shift 512 MB of data within 45 seconds via the standardized hierarchical ESO data acquisition network. Finally the safety and emergency features of the overall system are presented.

Proceedings Article | 30 September 2004 Paper

OmegaCAM: wide-field imaging with fine spatial resolution

Konrad Kuijken, Ralf Bender, Enrico Cappellaro, Bernard Muschielok, Andrea Baruffolo, Enrico Cascone, H.-J. Hess, Olaf Iwert, Harald Nicklas, Klaus Reif, Edwin Valentijn, Dietrich Baade, K. Begeman, Alessandro Bortolussi, Danny Boxhoorn, F. Christen, Erik Deul, Laura Greggio, Reiner Harke, Reinhold Haefner, Ulrich Hopp, Ivica Ilijevski, Guenther Klink, Helmut Kravcar, Carlo Magagna, Wolfgang Mitsch, Philip Mueller, Henning Poschmann, Roeland Rengelink, Walter Wellem

Proceedings Volume 5492, (2004) https://doi.org/10.1117/12.550892

KEYWORDS: Charge-coupled devices, Telescopes, Sensors, Calibration, Camera shutters, Optical filters, Observatories, Image analysis, Astronomy, Cameras

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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

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395405

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

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Proceedings Article | 16 August 2000 Paper

Masking techniques at the focal plane of the FORS instruments

Harald Schink, Harald Nicklas, Reiner Harke, Reinhold Haefner, Hans-Joachim Hess, Wolfgang Hummel, Karl-Heinz Mantel, Wolfgang Meisl, Bernard Muschielok, Karl Tarantik, Walter Seifert

Proceedings Volume 4008, (2000) https://doi.org/10.1117/12.395470

KEYWORDS: Polarimetry, Spectroscopes, Molybdenum, Imaging spectroscopy, Sensors, Telescopes, Observatories, Manufacturing, Astronomical imaging, Spatial resolution

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Proceedings Article | 9 July 1998 Paper

Image motion and flexure compensation of the FORS spectrographs

Harald Nicklas, Hermann Boehnhardt, Walter Fuertig, Reiner Harke, Hans-Joachim Hess, Peter Juergens, Bernard Muschielok, Walter Seifert, Otmar Stahl, Karl Tarantik

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316810

KEYWORDS: Telescopes, Spectrographs, Device simulation, Collimators, Cameras, Molybdenum, Sensors, Optical instrument design, Motion models, Motion measurement

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Proceedings Article | 9 July 1998 Paper

Testing FORS: the first focal reducer for the ESO VLT

Thomas Szeifert, Immo Appenzeller, Walter Fuertig, Walter Seifert, Otmar Stahl, Hermann Boehnhardt, W. Gaebler, Reinhold Haefner, Hans-Joachim Hess, Karl-Heinz Mantel, Wolfgang Meisl, Bernard Muschielok, Karl Tarantik, Reiner Harke, Peter Juergens, Harald Nicklas, Gero Rupprecht

Proceedings Volume 3355, (1998) https://doi.org/10.1117/12.316782

KEYWORDS: Telescopes, Device simulation, Stars, Imaging spectroscopy, Spectroscopes, Collimators, Optical filters, Polarimetry, Calibration, Optical fabrication

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