Dr. Hans J. Kärcher Profile

Dr. Hans J. Kärcher

Retired Consultant

SPIE Involvement:

Author

Publications (54)

Proceedings Article | 13 December 2020 Presentation + Paper

The Atacama Large Aperture Submillimeter Telescope (AtLAST)

Pamela Klaassen, Tony Mroczkowski, Claudia Cicone, Evanthia Hatziminaoglou, Sabrina Sartori, Carlos De Breuck, Sean Bryan, Simon Dicker, Carlos Duran, Chris Groppi, Hans Kaercher, Ryohei Kawabe, Kotaro Kohno, James Geach

Proceedings Volume 11445, 114452F (2020) https://doi.org/10.1117/12.2561315

KEYWORDS: Submillimeter telescopes, Telescopes, Interferometers, Observatories, Multiplexing, Spectrometers, Cameras

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Proceedings Article | 11 July 2018 Paper

The MICADO first light imager for ELT: derotator design status and prototype results

Santiago Barboza, Jörg-Uwe Pott, Ralf-Rainer Rohloff, Friedrich Müller, Ralph Hofferbert, Norbert Münch, Lars Mohr, José Ramos, Monica Ebert, Martin Glück, Jörg Wagner, Hans Kärcher, Wolfram Schlossmacher, Maximilian Häberle

Proceedings Volume 10702, 107028T (2018) https://doi.org/10.1117/12.2311683

KEYWORDS: Finite element methods, Interfaces, Mathematical modeling, Computer aided design, Prototyping, Manufacturing, Systems modeling

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Proceedings Article | 5 June 2018 Paper

System design of large optical communication antennas

Hans Kärcher, Farroukh Peykar Negar

Proceedings Volume 10690, 106900S (2018) https://doi.org/10.1117/12.2311788

KEYWORDS: Mirrors, Telescopes, Solar telescopes, Optical design, Antennas, Optical instrument design, Sun

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Proceedings Article | 30 November 2017 Paper

Reflector and mirror systems for submillimeter and infrared telescopes: an overview of technology and costs

Hans Kärcher

Proceedings Volume 2104, 21048O (2017) https://doi.org/10.1117/12.2298744

KEYWORDS: Reflectors, Mirrors, Infrared telescopes, Space telescopes, Telescopes, Radio optics, Infrared radiation, Terahertz technology, Optics manufacturing, Reflector telescopes

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Proceedings Article | 9 August 2016 Paper

Design of a large image derotator for the E-ELT instrument MICADO

Santiago Barboza, Jörg-Uwe Pott, Ralf-Rainer Rohloff, Friedrich Müller, Jörg Wagner, Hans Kärcher

Proceedings Volume 9908, 99089H (2016) https://doi.org/10.1117/12.2231632

KEYWORDS: Interfaces, Finite element methods, Device simulation, Large telescopes, Adaptive optics, Mathematical modeling, Telescopes, Computer programming, Wavefront sensors, Magnetism

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Proceedings Article | 27 July 2016 Paper

SOFIA design history

Hans Kärcher, Edwin Erickson, Alfred Krabbe, Jörg Wagner

Proceedings Volume 9906, 99061V (2016) https://doi.org/10.1117/12.2232715

KEYWORDS: Telescopes, Optical instrument design, Observatories, Optical instrument design, Mirrors, Space telescopes, Spherical lenses, Actuators, Magnetism, Optical spheres, Silicon carbide

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Proceedings Article | 27 July 2016 Paper

Dynamic analysis of DATE5 based on the physically realistic environmental disturbances

Hairen Wang, Yuan Qian, Zheng Lou, Yingxi Zuo, Ji Yang, Hans Kaercher

Proceedings Volume 9906, 990629 (2016) https://doi.org/10.1117/12.2231610

KEYWORDS: Telescopes, Servomechanisms, Spectrum analysis, Domes, Reflectors, Finite element methods, 3D modeling, Aluminum, Stereolithography, Astronomy

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Proceedings Article | 27 July 2016 Paper

DKIST telescope mount factory testing overview and lessons learned

Paul Jeffers, Todd Trieloff, Hans Kärcher, Steffen Seubert, William McBride

Proceedings Volume 9906, 99061E (2016) https://doi.org/10.1117/12.2231329

KEYWORDS: Telescopes, Solar telescopes, Mirrors, Inspection, Safety, Control systems, Interfaces, Observatories, Space telescopes, Finite element methods

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Proceedings Article | 22 July 2014 Paper

Performance verification of the DKIST Mount and Coudé Laboratory

Oliver Dreyer, Alexei Ippa, Steffen Seubert, Hans Kärcher, Paul Jeffers, Giovanni Bonomi

Proceedings Volume 9145, 91452A (2014) https://doi.org/10.1117/12.2055739

KEYWORDS: Telescopes, Device simulation, Computer programming, Solar telescopes, Computer aided design, Optical instrument design, Mirrors, Finite element methods, Motion models, Large telescopes

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Proceedings Article | 22 July 2014 Paper

SOFIA pointing history

Hans Kärcher, Nans Kunz, Pasquale Temi, Alfred Krabbe, Jörg Wagner, Martin Süß

Proceedings Volume 9145, 91450S (2014) https://doi.org/10.1117/12.2055463

KEYWORDS: Telescopes, Optical instrument design, Space telescopes, Mirrors, Imaging systems, Observatories, Infrared telescopes, Control systems, Device simulation, Wind measurement

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Proceedings Article | 10 July 2014 Paper

Ideas for future large single dish radio telescopes

Hans Kärcher, Jacob W. Baars

Proceedings Volume 9145, 914503 (2014) https://doi.org/10.1117/12.2055456

KEYWORDS: Telescopes, Reflectors, Radio telescopes, Reflector telescopes, Optical instrument design, Space telescopes, Active optics, Structural design, Carbon, Large telescopes

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Proceedings Article | 27 September 2012 Paper

ATST telescope mount: machine tool or telescope

Paul Jeffers, Günter Stolz, Giovanni Bonomi, Oliver Dreyer, Hans Kärcher

Proceedings Volume 8444, 84443T (2012) https://doi.org/10.1117/12.923838

KEYWORDS: Telescopes, Computer programming, Optical instrument design, Space telescopes, Control systems, Solar telescopes, Manufacturing, Mechatronics, Computer aided design

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Proceedings Article | 26 September 2012 Paper

SOFIA in operation: telescope performance during the basic science flights

Hans Kärcher, Jörg Wagner, Alfred Krabbe, Ulrich Lampater, Thomas Keilig, Jürgen Wolf

Proceedings Volume 8444, 84442R (2012) https://doi.org/10.1117/12.925416

KEYWORDS: Telescopes, Space telescopes, Observatories, Infrared telescopes, Infrared radiation, Imaging systems, Mirrors, Infrared astronomy, Astronomy, Gyroscopes

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Proceedings Article | 17 September 2012 Paper

The azimuth axes mechanisms for the ATST telescope mount assembly

Hans Kärcher, Ulrich Weis, Oliver Dreyer, Paul Jeffers, Giovanni Bonomi

Proceedings Volume 8444, 84440A (2012) https://doi.org/10.1117/12.925399

KEYWORDS: Telescopes, Computer aided design, Optical instrument design, Large telescopes, Device simulation, Structural design, Manufacturing, Analytical research, Mechanics, Systems engineering

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Proceedings Article | 17 September 2012 Paper

Telescope positioning and drive system based on magnetic bearings, technical challenges and possible applications in optical stellar interferometry

Roland Lemke, Hans Kärcher, Lothar Noethe

Proceedings Volume 8444, 844440 (2012) https://doi.org/10.1117/12.924988

KEYWORDS: Telescopes, Magnetism, Spatial resolution, Control systems, Interferometry, Stellar interferometry, Stars, Interferometers, Optical instrument design, Sensors

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Proceedings Article | 17 September 2012 Paper

ATST telescope pier

Paul Jeffers, Eric Manuel, Oliver Dreyer, Hans Kärcher

Proceedings Volume 8444, 84440L (2012) https://doi.org/10.1117/12.923831

KEYWORDS: Telescopes, Optical instrument design, Head, Structural engineering, Solar telescopes, Mirrors, Interfaces, Space telescopes, Mechatronics, Composites

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Proceedings Article | 17 September 2012 Paper

Design concepts for the EST mount

Hans Kärcher, Martin Süss, David Fischer

Proceedings Volume 8444, 84440M (2012) https://doi.org/10.1117/12.925159

KEYWORDS: Telescopes, Mirrors, Structural design, Optical instrument design, Solar telescopes, Device simulation, Sun, Optical components, Computer aided design, Lenses

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Proceedings Article | 10 November 2011 Paper

Integration of a thermo-structural analysis with an optical model for PEPSI polarimeter

Igor Di Varano, Klaus Strassmeier, Ilya Ilyin, Manfred Woche, Hans Kaercher

Proceedings Volume 8336, 83360W (2011) https://doi.org/10.1117/12.914963

KEYWORDS: Polarimetry, Optical fibers, Spectrographs, Telescopes, Birefringence, Polarization, Collimators, Cameras, Thermography, Prisms

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Proceedings Article | 7 August 2010 Paper

Mechanical principles of large mirror supports

Hans Kärcher, Peter Eisenträger, Martin Süss

Proceedings Volume 7733, 77332O (2010) https://doi.org/10.1117/12.855935

KEYWORDS: Mirrors, Actuators, Computer aided design, Earthquakes, Mechatronics, Telescopes, Silicon carbide, Mechanics, Reflectors, Glasses

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Proceedings Article | 7 August 2010 Paper

SOFIA in operation: status of the telescope in-flight commissioning

Hans Kärcher, Alfred Krabbe, Jörg Wagner, Christian Engfer, Ulrich Lampater, Jürgen Wolf

Proceedings Volume 7733, 773338 (2010) https://doi.org/10.1117/12.856384

KEYWORDS: Telescopes, Space telescopes, Mirrors, Imaging systems, Observatories, Infrared astronomy, Control systems, Device simulation, Gyroscopes, Optical instrument design

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Proceedings Article | 7 August 2010 Paper

Opto-mechanical design of the Antarctic Telescope ICE-T

Klaus Strassmeier, Igor DiVarano, Manfred Woche, Hans Kaercher, Peter Eisenträger

Proceedings Volume 7733, 77334U (2010) https://doi.org/10.1117/12.856246

KEYWORDS: Telescopes, Charge-coupled devices, Space telescopes, Stars, Computer programming, Photometry, Magnetism, Planets, Glasses, Control systems

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Proceedings Article | 6 August 2010 Paper

Path length errors of VLBI antennas

Hans Kaercher, Eberhard Sust, Peter Emde, Jürgen Kühn

Proceedings Volume 7733, 77333S (2010) https://doi.org/10.1117/12.856030

KEYWORDS: Antennas, Reflectors, Metrology, Sensors, Control systems, Telescopes, Optical alignment, Polonium, Manufacturing, Adaptive optics

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Proceedings Article | 5 August 2010 Paper

SOFIA telescope modal survey test and test-model correlation

Paul Keas, Rick Brewster, Jorge Guerra, Ulrich Lampater, Hans Kärcher, Stefan Teufel, Jörg Wagner

Proceedings Volume 7738, 77380K (2010) https://doi.org/10.1117/12.856507

KEYWORDS: Telescopes, Finite element methods, Space telescopes, Sensors, Observatories, Control systems, Integrated modeling, Motion models, Motion measurement, Optical instrument design

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Proceedings Article | 4 August 2010 Paper

Thermal design and de-icing system for the Antarctic Telescope ICE-T

Klaus Strassmeier, Hans Kärcher, Jürgen Kühn, Igor DiVarano

Proceedings Volume 7733, 77331W (2010) https://doi.org/10.1117/12.855933

KEYWORDS: Telescopes, Space telescopes, Mirrors, Cladding, Optical instrument design, Infrared telescopes, Infrared radiation, Electronics, Cameras, Thermal effects

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Proceedings Article | 28 July 2010 Paper

NLST: the Indian National Large Solar Telescope

S. Hasan, D. Soltau, H. Kärcher, M. Süss, T. Berkefeld

Proceedings Volume 7733, 77330I (2010) https://doi.org/10.1117/12.856108

KEYWORDS: Telescopes, Adaptive optics, Solar telescopes, Mirrors, Optical instrument design, Domes, Optical design, Sun, Diffraction, Mechanical engineering

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Proceedings Article | 23 July 2008 Paper

Trajectory control of cable suspended FAST telescope focus cabin

Bruno Strah, Simon Kern, Francis Fomi, Markus Lazanowski, Hui Li, Jinghai Sun, Rendong Nan, Hans Kärcher, Rainer Nordmann

Proceedings Volume 7018, 70181O (2008) https://doi.org/10.1117/12.789178

KEYWORDS: Control systems, Telescopes, Mathematical modeling, Systems modeling, Receivers, Sensors, Device simulation, Feedback control, Reflectors, Finite element methods

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Proceedings Article | 10 July 2008 Paper

Proposed design concepts of the FAST focus cabin suspension

Hans Kärcher, Hui Li, Jinghai Sun, Rendong Nan, Markus Lazanowski, Simon Kern, Bruno Strah, Francis Fomi

Proceedings Volume 7012, 701239 (2008) https://doi.org/10.1117/12.791488

KEYWORDS: Telescopes, Receivers, Reflectors, Control systems, Radio telescopes, Reflector telescopes, Prototyping, Astronomy, Observatories, Lead

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Proceedings Article | 10 July 2008 Paper

Large telescopes and the art of bridge building

H. Kärcher

Proceedings Volume 7012, 70124K (2008) https://doi.org/10.1117/12.791486

KEYWORDS: Telescopes, Bridges, Optical instrument design, Mirrors, Large telescopes, Mechanics, Reflectors, Optical telescopes, Refractor telescopes, Structural engineering

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Proceedings Article | 10 July 2008 Paper

The SOFIA telescope: preparing for early science

Hans Kärcher, Alfred Krabbe, Thomas Wegmann

Proceedings Volume 7012, 70123T (2008) https://doi.org/10.1117/12.792151

KEYWORDS: Telescopes, Mirrors, Observatories, Space telescopes, Coating, Control systems design, Infrared astronomy, Astronomical telescopes, Infrared radiation, Imaging systems

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Proceedings Article | 10 July 2008 Paper

Working space analysis and optimization of the main positioning system of FAST cabin suspension

Hui Li, Rendong Nan, Hans Kärcher, Wenbai Zhu, Jinghai Sun, Markus Lazanowski, Simon Kern, Bruno Strah, Francis Fomi Wamba, Chengjin Jin

Proceedings Volume 7012, 70120T (2008) https://doi.org/10.1117/12.790537

KEYWORDS: Optimization (mathematics), Actuators, Finite element methods, Reflectors, Space telescopes, Space robots, Telescopes, Magnesium, Mechatronics, Receivers

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Proceedings Article | 9 July 2008 Paper

Simulation model of FAST focus cabin for pointing accuracy analysis

Jinghai Sun, Rendong Nan, Wenbai Zhu, Hans Kärcher, Hui Li

Proceedings Volume 7017, 70171L (2008) https://doi.org/10.1117/12.787804

KEYWORDS: Actuators, Control systems, Device simulation, Receivers, Spherical lenses, Systems modeling, Radio telescopes, Ranging, Laser systems engineering, Telescopes

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Proceedings Article | 11 July 2006 Paper

Why not exposed extreme large telescopes?

Hans Kärcher, Martin Süss

Proceedings Volume 6267, 62672G (2006) https://doi.org/10.1117/12.673295

KEYWORDS: Telescopes, Optical instrument design, Mirrors, Radio telescopes, Optical telescopes, Reflectors, Cladding, Large telescopes, Radio optics, Control systems

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Proceedings Article | 30 May 2006 Paper

The mechatronic approach to the design of large mirrors and telescopes

Hans Kaercher

Proceedings Volume 6148, 614802 (2006) https://doi.org/10.1117/12.674036

KEYWORDS: Mirrors, Telescopes, Optical instrument design, Control systems, Mechatronics, Large telescopes, Radio telescopes, Manufacturing, Optical telescopes, Device simulation

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Proceedings Article | 30 May 2006 Paper

Support systems for segmented mirrors – an overview

Hans Kaercher

Proceedings Volume 6148, 614809 (2006) https://doi.org/10.1117/12.674047

KEYWORDS: Mirrors, Radio telescopes, Telescopes, Sensors, Segmented mirrors, Actuators, Glasses, Ceramics, Large telescopes, Control systems

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Proceedings Article | 30 May 2006 Paper

Dynamic aspects of segmented mirror position control

Hans Kaercher

Proceedings Volume 6148, 614804 (2006) https://doi.org/10.1117/12.674038

KEYWORDS: Telescopes, Mirrors, Control systems, Device simulation, Sensors, Actuators, Control systems design, Optical telescopes, Optical instrument design, Image segmentation

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Proceedings Article | 29 September 2004 Paper

Iso-static mirror supports vs. homologue reflectors: a comparison

Hans Kaercher

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.553277

KEYWORDS: Mirrors, Reflectors, Telescopes, Radio telescopes, Space telescopes, Optical telescopes, Optical instrument design, Radio optics, Reflector telescopes, Receivers

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Proceedings Article | 29 September 2004 Paper

Azimuth axis design for huge telescopes: an update

Hans Kaercher

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.553287

KEYWORDS: Telescopes, Radio telescopes, Optical instrument design, Optical telescopes, Heat treatments, Large telescopes, Chemical elements, Radar, Antennas, Optical engineering

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Proceedings Article | 29 September 2004 Paper

Status report on the SOFIA pointing system

Alfred Krabbe, Hans Kaercher

Proceedings Volume 5495, (2004) https://doi.org/10.1117/12.553288

KEYWORDS: Telescopes, Space telescopes, Control systems, Observatories, Mirrors, Device simulation, Infrared astronomy, Optical instrument design, Astronomy, Imaging systems

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Proceedings Article | 28 September 2004 Paper

Design studies on large Cherenkov telescopes

Peter Emde, Werner Hofmann, Hans J. Karcher

Proceedings Volume 5489, (2004) https://doi.org/10.1117/12.553178

KEYWORDS: Atmospheric Cherenkov telescopes, Telescopes, Mirrors, Optical instrument design, Cameras, Radio telescopes, Imaging systems, Gamma radiation, Control systems design, Atmospheric particles

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Proceedings Article | 7 July 2004 Paper

Experience with wind-excited mirror vibrations

Hans Kaercher

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566268

KEYWORDS: Mirrors, Telescopes, Actuators, Control systems, Large telescopes, Observatories, Image quality, Optical instrument design, Spherical lenses, Image segmentation

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Proceedings Article | 7 July 2004 Paper

Experience with the design and construction of huge telescope pedestals

Hans Kaercher

Proceedings Volume 5382, (2004) https://doi.org/10.1117/12.566261

KEYWORDS: Telescopes, Radio telescopes, Optical instrument design, Space telescopes, Manufacturing, Large telescopes, Optical telescopes, Control systems, Mirrors, Design for manufacturability

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Proceedings Article | 12 December 2003 Paper

Design of the solar telescope GREGOR under dynamic wind loads

Peter Emde, Martin Suss, Peter Eisenträger, Ralk Moik, Hans Karcher

Proceedings Volume 5179, (2003) https://doi.org/10.1117/12.508179

KEYWORDS: Telescopes, Error analysis, Device simulation, Mirrors, Electroluminescence, Wavefronts, Spectrum analysis, Solar telescopes, Finite element methods, Optical instrument design

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Proceedings Article | 3 March 2003 Paper

Evolution of the SOFIA Telescope system design: lessons learned during design and fabrication

Hans Kaercher

Proceedings Volume 4857, (2003) https://doi.org/10.1117/12.458581

KEYWORDS: Telescopes, Space telescopes, Mirrors, Optical instrument design, Observatories, Spherical lenses, Composites, Zerodur, Wavefront sensors, Telescope design

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Proceedings Article | 3 March 2003 Paper

Airborne pointing and pointing improvement strategy for SOFIA

Martin Suess, Karl Wandner, Hans Kaercher, Peter Eisentraeger, Ulrich Schoenhoff

Proceedings Volume 4857, (2003) https://doi.org/10.1117/12.458586

KEYWORDS: Telescopes, Space telescopes, Control systems, Device simulation, Mirrors, Sensors, Spherical lenses, Optical instrument design, Gyroscopes, Actuators

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Proceedings Article | 3 March 2003 Paper

Concepts for a lightweight balloon telescope for solar observation

Hans Kaercher

Proceedings Volume 4857, (2003) https://doi.org/10.1117/12.458585

KEYWORDS: Telescopes, Space telescopes, Control systems, Sun, Composites, Local area networks, Wavefronts, Wavefront sensors, Optical instrument design, Control systems design

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Proceedings Article | 30 July 2002 Paper

Flexible body control of the airborne telescope SOFIA

Hans Kaercher

Proceedings Volume 4757, (2002) https://doi.org/10.1117/12.489811

KEYWORDS: Telescopes, Space telescopes, Device simulation, Optical instrument design, Mirrors, Control systems, Observatories, Acoustics, Spherical lenses, Vibration isolation

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Proceedings Article | 3 July 2000 Paper

Design of the Large Millimeter Telescope/Gran Telescopio Millimetrico (LMT/GTM)

Hans Kaercher, Jacob Baars

Proceedings Volume 4015, (2000) https://doi.org/10.1117/12.390407

KEYWORDS: Telescopes, Reflectors, Optical instrument design, Servomechanisms, Radio telescopes, Reflector telescopes, Control systems, Actuators, Antennas, Mechanics

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Proceedings Article | 20 June 2000 Paper

End-to-end simulation of the image stability for the airborne telescope SOFIA

Ulrich Schoenhoff, Peter Eisentraeger, Karl Wandner, Hans Kaercher, Rainer Nordmann

Proceedings Volume 4014, (2000) https://doi.org/10.1117/12.389115

KEYWORDS: Telescopes, Space telescopes, Device simulation, Gyroscopes, Motion models, Mirrors, Aerodynamics, Optical instrument design, Modeling, Ray tracing

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Proceedings Article | 20 June 2000 Paper

Airborne environment: a challenge for telescope design

Hans Kaercher

Proceedings Volume 4014, (2000) https://doi.org/10.1117/12.389104

KEYWORDS: Telescopes, Space telescopes, Optical instrument design, Observatories, Telescope design, Astronomical telescopes, Mirrors, Device simulation, Servomechanisms, Manufacturing

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Proceedings Article | 20 June 2000 Paper

Pointing control system of SOFIA

Karl Wandner, Hans Kaercher

Proceedings Volume 4014, (2000) https://doi.org/10.1117/12.389113

KEYWORDS: Telescopes, Imaging systems, Gyroscopes, Cameras, Mirrors, Control systems, Spherical lenses, Servomechanisms, Space telescopes, Actuators

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Proceedings Article | 9 June 1999 Paper

Enhanced pointing of telescopes by smart structure concepts based on modal observers

Hans Kaercher

Proceedings Volume 3668, (1999) https://doi.org/10.1117/12.350776

KEYWORDS: Telescopes, Sensors, Control systems, Space telescopes, Actuators, Optical instrument design, Mathematical modeling, Smart structures, Temperature metrology, Reflector telescopes

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Proceedings Article | 26 May 1998 Paper

Pointing control system for the Stratospheric Observatory for Infrared Astronomy (SOFIA)

Hans Kaercher, Peter Eisentraeger, Karl Wandner, Rainer Nordmann, Ulrich Schoenhoff

Proceedings Volume 3351, (1998) https://doi.org/10.1117/12.308840

KEYWORDS: Telescopes, Space telescopes, Device simulation, Control systems design, Sensors, Observatories, Data modeling, Control systems, Mirrors, Mathematical modeling

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Proceedings Article | 1 November 1990 Paper

SOFIA telescope mounting on a large segmented air bearing

Hans Kaercher, H. Lautner

Proceedings Volume 1340, (1990) https://doi.org/10.1117/12.23042

KEYWORDS: Telescopes, Optical instrument design, Space telescopes, Optical cryogenics, Observatories, Tolerancing, Control systems, Optical spheres, Spherical lenses, Optics manufacturing

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Proceedings Article | 1 August 1990 Paper

Dynamics and control performance of a very large telescopic structure

Harald Nicklas, Hans Kaercher, D. Maurer, B. Arras

Proceedings Volume 1271, (1990) https://doi.org/10.1117/12.20419

KEYWORDS: Telescopes, Adaptive optics, Control systems, Finite element methods, Mirrors, Optical instrument design, Optical mounts, Optical telescopes, Integrated optics, Atmospheric optics

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Showing 5 of 54 publications

Conference Committee Involvement (5)

3rd International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes

8 July 2007 | Chengdu, China

Optomechanical Technologies for Astronomy

24 May 2006 | Orlando, Florida , United States

Astronomical Structures and Mechanisms Technology

21 June 2004 | Glasgow, United Kingdom

Airborne Telescope Systems II

27 August 2002 | Waikoloa, Hawai'i, United States

Airborne Telescope Systems

27 March 2000 | Munich, Germany

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