@inproceedings{ProbstDoehringZeisingetal.2017, author = {Probst, Anne-Catherine and D{\"o}hring, Thorsten and Zeising, Sebastian and Salmaso, Bianca and Stollenwerk, Manfred and Proserpio, Laura}, title = {Challenges in metrology of mirror segments for X-ray telescopes}, series = {Proceedings of the 8th High Level Expert Meeting Asphere Metrology}, volume = {2017}, booktitle = {Proceedings of the 8th High Level Expert Meeting Asphere Metrology}, number = {8}, publisher = {UTOB e.V.}, address = {Braunschweig}, organization = {Hochschule Aschaffenburg}, pages = {4}, year = {2017}, abstract = {High angular resolution, large collecting area and reduced weight per unit area are required for astronomical X-ray telescopes of the next generation observatories. New technologies for processing X-ray mirrors are under development to fulfill these needs. One option is to realize a Wolter I type telescope constituted of several hundred nested thin and light-weight X-ray mirror segments. The individual mirror segments need to be coated with an about 100 nm thick film of a high-reflective material to enhance the reflectivity for X-rays. Thereby an accurate shape metrology of the segments is necessary to predict the angular resolution of the astronomical telescope as well as to control the development process of X-ray mirrors. We present the challenges in shape measurements of thin glasses used to control the coating process and first experimental results about the repeatability of the measurements.}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringProbstStehlikovaetal.2017, author = {D{\"o}hring, Thorsten and Probst, Anne-Catherine and Stehlikova, Veronika and Skala, Petr and Inneman, Adolf and Hudec, Rene}, title = {JEUMICO - Bayerisch-tschechische Kooperation zur Entwicklung von R{\"o}ntgenteleskopen}, series = {DGaO-Proceedings}, volume = {2017}, booktitle = {DGaO-Proceedings}, number = {2017}, publisher = {DGaO}, organization = {Hochschule Aschaffenburg}, issn = {1614-8436}, pages = {2}, year = {2017}, abstract = {Das Projekt JEUMICO wird vom Projekttr{\"a}ger BAYHOST im Rahmen eines Programms f{\"u}r bilaterale wissenschaftliche Projekte zwischen Tschechien und Bayern gef{\"o}rdert. Inhaltlich werden von der Hochschule Aschaffenburg und der Technischen Universit{\"a}t Prag hier gemeinsam R{\"o}ntgenoptiken f{\"u}r ein geplantes astronomisches Experiment an Bord einer NASA-H{\"o}henrakete entwickelt.}, subject = {R{\"o}ntgenstrahlung}, language = {de} } @inproceedings{HudecDoehringRemisova2017, author = {Hudec, Rene and D{\"o}hring, Thorsten and Remisova, Katerina}, title = {Lobster Eye Optics \& Biomimetics}, series = {DGaO-Proceedings}, volume = {2017}, booktitle = {DGaO-Proceedings}, number = {2017}, publisher = {DGaO}, organization = {Czech Academy of Sciences}, issn = {1614-8436}, pages = {2}, year = {2017}, abstract = {We present optic designs based on biomimetic, namely technical applications of animal eyes principles (here: Lobster Eyes) for the special application of wide field X-ray imaging. Thereby we show and discuss some experimental results and correlate them with simulations. Preliminary results of an ongoing study on other strange animal mirror eyes with potential scientific and technical applications are also discussed. Some of them are based on the principle of multilayer multi-mirror active optics arrangements. The Lobster Eye X-ray optics needs special reflective coatings for a better performance, which are currently developed within the Bavarian-Czech cooperation project JEUMICO.}, subject = {R{\"o}ntgenastronomie}, language = {en} } @inproceedings{SkalaDoehringHudec2017, author = {Skala, Petr and D{\"o}hring, Thorsten and Hudec, Rene}, title = {Colors of the universe - market study on optical filters for professional astronomy}, series = {DGaO-Proceedings}, volume = {2017}, booktitle = {DGaO-Proceedings}, number = {2017}, publisher = {DGaO}, organization = {Czech Technical University in Prague}, issn = {1614-8436}, pages = {2}, year = {2017}, abstract = {For astronomers, filters are essential observational tools and in many cases, it is hard for them to find the best supplier. We present list of filters manufacturers and their capabilities sorted and discussed.}, subject = {Markt{\"u}bersicht}, language = {en} } @article{HudecDoehring2017, author = {Hudec, Rene and D{\"o}hring, Thorsten}, title = {JEUMICO: Czech-Bavarian astronomical X-ray optics project}, series = {Contributions of the Astronomical Observatory Skalnat{\´e} Pleso}, volume = {2017}, journal = {Contributions of the Astronomical Observatory Skalnat{\´e} Pleso}, number = {47}, editor = {Slovak Academy of Sciences Astronomical Institute,}, pages = {170 -- 177}, year = {2017}, abstract = {Within the project JEUMICO, an acronym for Joint European Mirror Competence, the Aschaffenburg University of Applied Sciences and the Czech Technical University in Prague started a collaboration to develop mirrors for X-ray telescopes. Corresponding mirror segments use substrates of at silicon wafers which are coated with thin iridium � lms, as this material is promising high re ectivity in the X-ray range of interest. The sputtering parameters are optimized in the context of the expected re ectivity of the coated X-ray mirrors. In near future measurements of the assembled mirror modules optical performances are planned at an X-ray test facility.}, subject = {Iridium}, language = {en} } @inproceedings{Doehring2017, author = {D{\"o}hring, Thorsten}, title = {Critical discussion on the UV absorption properties of Earth's atmosphere}, series = {Proceedings of SPIE}, volume = {2017}, booktitle = {Proceedings of SPIE}, number = {10453}, publisher = {SPIE}, organization = {Hochschule Aschaffenburg}, doi = {10.1117/12.2271645}, pages = {104530I-1 -- 104530I-10}, year = {2017}, abstract = {Sun´s ultraviolet radiation is classified into UV-A, UV-B, and UV-C bands. Thereby UV-A passes through Earth´s atmosphere, while UV-B is partially absorbed by ozone. The limitations of the commonly accepted statement, that UV-C is always completely absorbed by Earth´s atmosphere, are discussed critically. Below 200 nm the solar spectrum is strongly absorbed by molecular oxygen. The stratospheric ozone layer has strong absorption between 200 nm and 300 nm. However, the "ozone hole" increases UV-B radiation just below 300 nm and may also open a transmitting atmospheric window for harmful UV-C at the overlap region between oxygen absorption and ozone absorption.}, subject = {Ozonloch}, language = {en} } @inproceedings{DoehringProbstEmmerichetal.2017, author = {D{\"o}hring, Thorsten and Probst, Anne-Catherine and Emmerich, Florian and Stollenwerk, Manfred and Stehlikova, Veronika and Friedrich, Peter and Damm, Christine}, title = {Development of iridium coated X-ray mirrors for astronomical applications}, series = {Proceedings of the International Society for Optics and Photonics (SPIE)}, volume = {2017}, booktitle = {Proceedings of the International Society for Optics and Photonics (SPIE)}, number = {10399}, publisher = {SPIE}, doi = {10.1117/12.2273988}, pages = {103991C-1 -- 103991C-8}, year = {2017}, abstract = {Future space-based X-ray observatories need to be very lightweight for launcher mass constraints. Therefore they will use a reduced mirror thickness, which results in the additional requirement of low coating stress to avoid deformation of the initial precisely shaped mirror substrates. Due to their excellent reflection properties iridium coatings are sometimes applied for grazing incidence mirrors in astronomical X-ray telescopes. At Aschaffenburg University of Applied Sciences the coating of thin iridium films by an RF-magnetron sputtering technique is under development. The work is embedded in collaborations with the Max-Planck-Institute for Extraterrestrial Physics in Germany, the Czech Technical University in Prague, the Osservatorio Astronomico di Brera in Italy, the German Leibniz Institute for Solid State and Materials Research in Dresden, and the French Institute Fresnel. Sputtering with different parameters leads to iridium films with different properties. The current work is focused on the microstructure of the iridium coatings to study the influence of the substrate and of the argon gas pressure on the thin film growing process. Correlations between coating density, surface micro-roughness, the crystalline structure of the iridium layers, and the expected reflectivity of the X-ray mirror as well as coating stress effects are presented and discussed. The final goal of the project is to integrate the produced prototype mirrors into an X-ray telescope module. On a longer timescale measurements of the mirror modules optical performance are planned at the X-ray test facility PANTER.}, subject = {Iridium}, language = {en} } @inproceedings{StehlikovaProserpioFriedrichetal.2017, author = {Stehlikova, Veronika and Proserpio, Laura and Friedrich, Peter and Madarasz, Emanuel and Breunig, Elias and Burwitz, Vadim and D{\"o}hring, Thorsten and Probst, Anne-Catherine}, title = {Indirect glass slumping of grazing incidence mirror segments for lightweight x-ray telescopes}, series = {Proceedings of the International Society for Optics and Photonics (SPIE)}, volume = {2017}, booktitle = {Proceedings of the International Society for Optics and Photonics (SPIE)}, number = {10399}, publisher = {SPIE}, organization = {Max-Planck Institut f{\"u}r extraterrestrische Physik}, doi = {10.1117/12.2272671}, pages = {103991Z-1 -- 103991Z-7}, year = {2017}, abstract = {The paper provides a description of recent progress in the development of lightweight, precision and highthroughput grazing-incidence mirrors for X-ray astronomy made of glass. In particular, the indirect slumping technology under investigation at the Max Planck Institute for Extraterrestrial Physics (MPE) is reviewed and recent activities are presented together with the research approach. The glass slumping technique foresees several steps: a thermal forming process using a suitable mould; a re ective layer application; the alignment and integration of mirror segments into a supporting structure; and the � nal veri� cation of prototype modules using X-rays. Each step is considered at MPE, with the involvement of partner institutes and universities. The last year of activities was mainly dedicated to the procurement of new moulds and to the application of Iridium coating. The main results will be presented.}, subject = {Iridium}, language = {en} } @inproceedings{StehlikovaProbstNentvichetal.2017, author = {Stehlikova, Veronika and Probst, Anne-Catherine and Nentvich, Ondrej and Urban, Martin and Inneman, Adolf and Sieger, Ladislav and Marsikova, Veronika and D{\"o}hring, Thorsten}, title = {Development of iridium coated silicon X-ray mirrors for Lobster Eye astronomical telescopes}, series = {Proceedings of EOSMOS 2017}, volume = {2017}, booktitle = {Proceedings of EOSMOS 2017}, number = {EOSMOS 2017}, publisher = {European Optical Society}, organization = {CVUT Prag}, pages = {1 -- 2}, year = {2017}, abstract = {In the field of X-ray astronomy different types of telescope optics based on grazing incidence mirrors can be used. This contribution presents a special design of a Lobster Eye wide-field telescope with mirrors based on flat silicon wafers and the task of coating such mirror substrates with reflective iridium layers.}, subject = {Iridium}, language = {en} } @article{ProbstStollenwerkEmmerichetal.2017, author = {Probst, Anne-Catherine and Stollenwerk, Manfred and Emmerich, Florian and B{\"u}ttner, Andre and Zeising, Sebastian and Stadtm{\"u}ller, Johannes and Riethm{\"u}ller, Franziska and Stehlikova, Veronika and Mingwu, Wen and Proserpio, Laura and Damm, Christine and Rellinghaus, Bernd and D{\"o}hring, Thorsten}, title = {Influence of sputtering pressure on the nanostructure and the X-ray reflectivity of iridium coatings}, series = {Surface and Coatings Technology}, volume = {2017}, journal = {Surface and Coatings Technology}, number = {343}, issn = {0257-8972}, pages = {101 -- 107}, year = {2017}, abstract = {Reflective mirror coatings made of iridium are used in X-ray telescopes of the Chandra X-ray Observatory (CXO) launched in 1999 by the National Aeronautics and Space Administration (NASA) to investigate astronomical sources at photon energies below 10. keV. These coatings were produced in a DC magnetron sputtering process and have so far proven their suitability for space-based applications. We are considering in the present paper the processing of thin iridium films for lightweight telescopes using the radio frequency magnetron sputtering technique with an oblique angle deposition. The coating development presented here is focused on the influence of total sputtering pressure on film properties as well as on its impact on the mirror's performance. Characterisation methods such as X-ray diffractometry, X-ray reflectometry, atomic force microscopy and transmission electron microscopy have been used. Correlations between morphology, density, surface micro-roughness, crystal structure of the iridium layer and the expected reflectivity of the X-ray mirror are described and discussed.}, subject = {Iridium}, language = {en} } @misc{DoehringProbullaKomziketal.2018, author = {D{\"o}hring, Thorsten and Probulla, Theodor and Komzik, Richard and Mann, Michael and Sivanic, Peter and Stollenwerk, Manfred}, title = {Slovak-Bavarian collaboration on the development of telescope instrumentation}, editor = {Hambalek, Lubomir}, organization = {Hochschule Aschaffenburg}, pages = {1}, year = {2018}, abstract = {Within the project SLOBATCO (Slovak-Bavarian Telescope Collaboration) the Astronomical Institute of the Slovak Academy of Sciences and Aschaffenburg University of Applied Sciences collaborate in the development and commissioning of the new {\O}1.3 m astronomical telescope and the corresponding scientific instrumentation. The project is funded by the Bavarian Academic Center for Central, Eastern and Southeastern Europe (BAYHOST). Technical work packages are targeting filter wheel software for the VIS camera, additional IR filters, and an upgrade of the mirror coating facility by additional sputtering equipment.}, subject = {Spiegelteleskop}, language = {en} } @article{ProbstBegouDoehringetal.2018, author = {Probst, Anne-Catherine and Begou, Thomas and D{\"o}hring, Thorsten and Zeising, Sebastian and Stollenwerk, Manfred and Stadtm{\"u}ller, Johannes and Emmerich, Florian and Lumeau, Julien}, title = {Coating stress analysis and compensation for iridium-based x-ray mirrors}, series = {Applied Optics}, volume = {2018}, journal = {Applied Optics}, number = {57 (29)}, editor = {Publishing OSA,}, pages = {8775 -- 8779}, year = {2018}, abstract = {Iridium-based coatings for mirrors of x-ray telescopes are studied. In particular, stress-induced deformation is characterized and shown to be compressive and equal to -1786  MPa. Two methods for stress compensation are then studied. One relies on the deposition of silica on the back surface of the substrate and a second one relies on the deposition of a chromium sublayer. Advantages and drawbacks of each of these techniques are presented.}, subject = {R{\"o}ntgenteleskop}, language = {en} } @misc{HudecPinaMarsikovaetal.2018, author = {Hudec, Rene and Pina, Ladislav and Marsikova, Veronika and Inneman, Adolf and D{\"o}hring, Thorsten}, title = {Kirkpatrick Baez X-ray Optics for Astrophysics: Recent Status}, editor = {Deutsche Gesellschaft f{\"u}r angewandte Optik,}, organization = {CVUT Prag}, pages = {1 -- 1}, year = {2018}, abstract = {X-ray optics in KB (Kirkpatrick Baez) arrangement represent promising alternative to Wolter optics in common use. We will present some new results including KB module developed and tested in X-rays within the EU AHEAD project.}, subject = {R{\"o}ntgenteleskop}, language = {en} } @misc{HudecPinaMarsikovaetal.2018, author = {Hudec, Rene and Pina, Ladislav and Marsikova, Veronika and Inneman, Adolf and D{\"o}hring, Thorsten}, title = {Lobster Eye X-ray Optics for Astrophysics: Recent Status}, editor = {Deutsche Gesellschaft f{\"u}r angewandte Optik,}, organization = {CVUT Prag}, pages = {1 -- 1}, year = {2018}, abstract = {X-ray optics in LE (Lobster Eye) arrangement represent important part of future X-ray wide field telescopes and monitors. We will present some new results in the design, development, tests and applications of LE X-ray optics with emphasis on astrophysics.}, subject = {R{\"o}ntgenteleskop}, language = {en} } @book{Doehring1993, author = {D{\"o}hring, Thorsten}, title = {Das laserinduzierte Plasma - eine R{\"o}ntgenlichtquelle}, publisher = {Technische Hochschule Aschaffenburg}, year = {1993}, abstract = {Dissertation}, subject = {Lasererzeugtes Plasma}, language = {de} } @misc{HartmannDoehringSchaefer2009, author = {Hartmann, Peter and D{\"o}hring, Thorsten and Sch{\"a}fer, Martin}, title = {Glass Ceramic ZERODUR® for Space Application}, series = {DGaO-Proceedings}, volume = {2009}, journal = {DGaO-Proceedings}, issn = {1614-8436}, year = {2009}, abstract = {Poster}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{KlingLucarelliHartmannetal.2009, author = {Kling, G{\"u}nther and Lucarelli, Stefano and Hartmann, Peter and Nattermann, Kurt and D{\"o}hring, Thorsten and Kuhr, Markus and Thomas, Peter}, title = {Double Ring Tests on ZERODUR K20 and Etched ZERODUR}, series = {Proceedings 11th European Conference on Spacecraft Structures, Materials and Mechanical Testing, 15-17 Sep 2009, Toulouse, France}, booktitle = {Proceedings 11th European Conference on Spacecraft Structures, Materials and Mechanical Testing, 15-17 Sep 2009, Toulouse, France}, year = {2009}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringJedamzikHartmann2007, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Hartmann, Peter}, title = {Mirrors for solar telescopes made from ZERODUR glass ceramic}, series = {Proceedings of SPIE}, volume = {6689}, booktitle = {Proceedings of SPIE}, number = {66890X}, year = {2007}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringJedamzik2007, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf}, title = {Manufacturing of lightweighted ZERODUR components at SCHOTT}, series = {Proceedings of SPIE}, volume = {6666}, booktitle = {Proceedings of SPIE}, number = {666602}, year = {2007}, subject = {Zerodur}, language = {en} } @inproceedings{HartmannNattermannDoehring2007, author = {Hartmann, Peter and Nattermann, Kurt and D{\"o}hring, Thorsten}, title = {Strength aspects for the design of ZERODUR glass ceramics structures}, series = {Proceedings of SPIE}, volume = {6666}, booktitle = {Proceedings of SPIE}, number = {666603}, year = {2007}, subject = {Zerodur}, language = {en} } @inproceedings{DoehringJedamzikHartmann2007, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Hartmann, Peter}, title = {ZERODUR mirror substrates for solar Telescopes}, series = {Modern Solar Facilities - Advanced Solar Science : Proceedings of a Workshop held at G{\"o}ttingen September 27-29, 2006}, booktitle = {Modern Solar Facilities - Advanced Solar Science : Proceedings of a Workshop held at G{\"o}ttingen September 27-29, 2006}, publisher = {Universit{\"a}tsverlag}, address = {G{\"o}ttingen}, pages = {77 -- 82}, year = {2007}, subject = {Zerodur}, language = {en} } @inproceedings{DoehringLoosenHartmann2006, author = {D{\"o}hring, Thorsten and Loosen, Klaus-Dieter and Hartmann, Peter}, title = {The technical challenge of large ELT filters}, series = {Proceedings of SPIE}, volume = {6273}, booktitle = {Proceedings of SPIE}, number = {62730U}, year = {2006}, subject = {Filter}, language = {en} } @inproceedings{DoehringHartmannJedamzik2006, author = {D{\"o}hring, Thorsten and Hartmann, Peter and Jedamzik, Ralf}, title = {Properties of Zerodur mirror blanks for extremely large telescopes}, series = {Proceedings of SPIE}, volume = {6148}, booktitle = {Proceedings of SPIE}, number = {61480G}, year = {2006}, subject = {Zerodur}, language = {en} } @inproceedings{DoehringHartmannJedamzik2005, author = {D{\"o}hring, Thorsten and Hartmann, Peter and Jedamzik, Ralf}, title = {Status of ZERODUR mirror blank production at SCHOTT}, series = {Proceedings of SPIE}, volume = {5869}, booktitle = {Proceedings of SPIE}, number = {586902}, year = {2005}, subject = {Zerodur}, language = {en} } @inproceedings{JedamzikDoehringMueller2005, author = {Jedamzik, Ralf and D{\"o}hring, Thorsten and M{\"u}ller, Rolf}, title = {Homogeneity of the coefficient of linear thermal expansion of ZERODUR}, series = {Proceedings of SPIE}, volume = {5868}, booktitle = {Proceedings of SPIE}, number = {58680S}, year = {2005}, subject = {Zerodur}, language = {en} } @inproceedings{HartmannNattermannDoehring2008, author = {Hartmann, Peter and Nattermann, Kurt and D{\"o}hring, Thorsten}, title = {ZERODUR glass ceramics: strength data for the design of structures with high mechanical stresses}, series = {Proceedings of SPIE}, volume = {7018}, booktitle = {Proceedings of SPIE}, number = {70180O}, year = {2008}, subject = {Glaskeramik}, language = {en} } @inproceedings{DoehringJedamzikThomasetal.2008, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Thomas, Armin and Hartmann, Peter}, title = {Forty years of ZERODUR mirror substrates for astronomy: review and outlook}, volume = {7018}, number = {70183B}, year = {2008}, subject = {Spiegelteleskop}, language = {en} } @article{DoehringSchreiber2008, author = {D{\"o}hring, Thorsten and Schreiber, Ulrich}, title = {Glaskeramik - Fundament f{\"u}r h{\"o}chste Pr{\"a}zision}, series = {Photonik}, journal = {Photonik}, number = {2}, issn = {1432-9778}, pages = {52 -- 55}, year = {2008}, subject = {Glaskeramik}, language = {de} } @misc{DoehringHudec2018, author = {D{\"o}hring, Thorsten and Hudec, Rene}, title = {Optics development for X-ray astronomy - a review on four joint Bavarian-Czech projects}, organization = {Hochschule Aschaffenburg}, pages = {1 -- 1}, year = {2018}, abstract = {In the years 2016 to 2018 the Bavarian-Czech Academic Agency (BTHA) funded in summary four bilateral projects between Aschaffenburg University and CVUT Prague: JEUMICO, TRILAMICO, JODEXRA, and AXROCO. The effective combination of equipment, manpower, and know-how of both partners resulted in the development of stress-compensated iridium coatings for astronomical X-ray mirrors. The findings have been published at scientific conferences and in joint papers. This poster gives a review on the social , political and educational aspects of the collaborations in form of a photo documentation.}, subject = {R{\"o}ntgenspiegel}, language = {en} } @misc{DoehringGoeslingPribullaetal.2019, author = {D{\"o}hring, Thorsten and G{\"o}sling, Lukas and Pribulla, Theodor and Komzik, Richard}, title = {Segmented infrared filters for the 1.3m telescope in the Slovak Tatra Mountains}, organization = {TH Aschaffenburg}, pages = {1}, year = {2019}, abstract = {Since 2015, the Astronomical Institute of the Slovak Academy of Sciences (AI SAS) is operating a modern EU-funded reflecting telescope with a 130 cm primary mirror, located in the Skalnat{\´e} Pleso Observatory in the Tatra Mountains at an altitude of 1783 m. In 2018, the funding agency BAYHOST granted the proposed project SLOBATCO to Aschaffenburg University of Applied Sciences. The cooperation project pursues the development of astronomical NIR filters, which are designed for the atmospheric transmission windows in the infrared spectral range. In order to avoid a complex cryogenic filter wheel for the NIR CCD camera operated at low temperatures, the observations should be realized through a segmented filter using precise shifts of the image field. The bi-national cooperation project and the specification of the infrared filter combination are presented in this poster contribution.}, subject = {Spiegelteleskop}, language = {en} } @incollection{Doehring2019, author = {D{\"o}hring, Thorsten}, title = {Hochschule Aschaffenburg}, series = {Deutsche Raumfahrtakteure : Bundesl{\"a}nder - Organisation - Raumfahrt - raumfahrtbasierte Anwendungen}, booktitle = {Deutsche Raumfahrtakteure : Bundesl{\"a}nder - Organisation - Raumfahrt - raumfahrtbasierte Anwendungen}, publisher = {Deutsches Zentrum f{\"u}r Luft- und Raumfahrt e. V. (DLR)}, address = {K{\"o}ln}, pages = {87 -- 87}, year = {2019}, abstract = {Die Hochschule Aschaffenburg zeichnet sich durch wirtschaftsnahe, {\"u}berwiegend interdisziplin{\"a}re und innovative Studieng{\"a}nge aus. Enge Kooperationen mit Unternehmen sowie Partnerschaften mit ausl{\"a}ndischen Hochschulen garantieren den Studierenden, dass sie praxisrelevantes Wissen erwerben, welches f{\"u}r eine erfolgreiche Arbeit in einer zunehmend globalen Arbeitswelt erforderlich ist. Professorinnen und Professoren der Fakult{\"a}t Ingenieurwissenschaften sind mit ihren Forschungsteams {\"u}ber internationale Kooperationen an mehreren Raumfahrtprojekten beteiligt. Es werden Spiegelschichten f{\"u}r R{\"o}ntgensatelliten entwickelt, Katalysatoren f{\"u}r Raketentriebwerke beschichtet und die Auswirkungen kosmischer Strahlung auf das Herz-Kreislauf-System und auf Gehirnzellen untersucht. Die Ergebnisse werden in wissenschaftlichen Publikationen und auf Fachkonferenzen pr{\"a}sentiert. Studierende sind {\"u}ber Spezialvorlesungen und Abschlussarbeiten zu Raumfahrtthemen hierbei mit eingebunden.}, subject = {Raumfahrttechnik}, language = {de} } @incollection{DoehringKrausseSchneiderStoermann2018, author = {D{\"o}hring, Thorsten and Krauße, Sylvana and Schneider-St{\"o}rmann, Ludger}, title = {Der Studiengang Internationales Technisches Vertriebsmanagement an der Hochschule Aschaffenburg - Ausbildung von Vertriebsingenieuren f{\"u}r einen globalen Markt}, series = {Internationalisierung der Curricula in den MINT-F{\"a}chern}, booktitle = {Internationalisierung der Curricula in den MINT-F{\"a}chern}, publisher = {wbv Media}, address = {Bielefeld}, doi = {10.3278/6004649w}, pages = {161 -- 170}, year = {2018}, abstract = {Die Wettbewerbsf{\"a}higkeit der Exportnation Deutschland erfordert hervorragend ausgebildete Vertriebsingenieure. Dieses Ausbildungsziel verfolgt der Studiengang „Internationales Technisches Vertriebsmanagement" an der Hochschule Aschaffenburg. Als Besonderheit komplettiert ein f{\"u}r alle Studierende verpflichtender Auslandsaufenthalt die international ausgerichtete Ausbildung. Neben Lehrveranstaltungen in englischer Sprache gibt es eine internationale Projektwoche als Maßnahme zur "Internationalisation at Home". Der Studiengang ist {\"u}ber die „Academic Association of Sales Engineering" international vernetzt.}, language = {de} } @inproceedings{DoehringHartmann2005, author = {D{\"o}hring, Thorsten and Hartmann, Peter}, title = {Large Lenses and Filters for ELTs : Challenges and Opportunities for SCHOTT}, series = {Instrumentation for Extremely Large Telescopes : Proceedings of a Workshop held at Ringberg Castle ; 25-29 July 2005}, booktitle = {Instrumentation for Extremely Large Telescopes : Proceedings of a Workshop held at Ringberg Castle ; 25-29 July 2005}, publisher = {MPIA}, address = {Heidelberg}, pages = {33 -- 37}, year = {2005}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{HartmannDoehring2005, author = {Hartmann, Peter and D{\"o}hring, Thorsten}, title = {Mirror blank production for ELTs}, series = {Instrumentation for Extremely Large Telescopes : a Workshop held at Ringberg Castle, Bavaria, 25-29 July 2005 ; proceedings}, booktitle = {Instrumentation for Extremely Large Telescopes : a Workshop held at Ringberg Castle, Bavaria, 25-29 July 2005 ; proceedings}, publisher = {Max-Planck-Institut f{\"u}r Astronomie}, address = {Heidelberg}, year = {2005}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringJedamzikWittmer2004, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Wittmer, Volker}, title = {Production of the 4.1-m Zerodur mirror blank for the VISTA Telescope}, series = {Proceedings of SPIE}, volume = {5494}, booktitle = {Proceedings of SPIE}, pages = {340 -- 349}, year = {2004}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringHartmannJedamzik2004, author = {D{\"o}hring, Thorsten and Hartmann, Peter and Jedamzik, Ralf}, title = {ZERODUR mirror blanks for ELTs: technology and production capacity at SCHOTT}, series = {Proceedings of SPIE}, volume = {5382}, booktitle = {Proceedings of SPIE}, pages = {285 -- 295}, year = {2004}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringJedamzikHartmann2004, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Hartmann, Peter}, title = {Forming mandrels for x-ray telescopes made of modified Zerodur}, series = {Proceedings of SPIE}, volume = {5168}, booktitle = {Proceedings of SPIE}, pages = {148 -- 156}, year = {2004}, subject = {Zerodur}, language = {en} } @inproceedings{GhigoCitterioMazzolenietal.2004, author = {Ghigo, Mauro and Citterio, Oberto and Mazzoleni, Francesco and Pareschi, Giovanni and Aschenbach, Bernd and Br{\"a}uninger, Heinrich W. and Friedrich, Peter and Hasinger, G{\"u}nther and D{\"o}hring, Thorsten and Esemann, Hauke and Jedamzik, Ralf and H{\"o}lzel, Eva and Parodi, Giancarlo}, title = {The manufacturing of the XEUS x-ray glass segmented mirrors: status of the investigation and last results}, series = {Proceedings of SPIE}, volume = {5168}, booktitle = {Proceedings of SPIE}, pages = {180 -- 195}, year = {2004}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringJedamzikThomas2003, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Thomas, Armin}, title = {Zerodur mandrels for the next generation of x-ray telescopes}, series = {Proceedings of SPIE}, volume = {4851}, booktitle = {Proceedings of SPIE}, pages = {647 -- 655}, year = {2003}, subject = {R{\"o}ntgenteleskop}, language = {en} } @inproceedings{DoehringHartmannMorian2003, author = {D{\"o}hring, Thorsten and Hartmann, Peter and Morian, Hans F.}, title = {Optical glasses and glass ceramics for large optical systems}, series = {Proceedings of SPIE}, volume = {4842}, booktitle = {Proceedings of SPIE}, pages = {56 -- 66}, year = {2003}, subject = {Zerodur}, language = {en} } @article{DoehringMorian2000, author = {D{\"o}hring, Thorsten and Morian, Hans F.}, title = {An eye on the sky}, series = {GLASS - Monthly Journal of the European Glass Industry}, volume = {2000}, journal = {GLASS - Monthly Journal of the European Glass Industry}, number = {77}, pages = {370 -- 371}, year = {2000}, subject = {Glas}, language = {en} } @inproceedings{AltmannEgleHafneretal.2000, author = {Altmann, J{\"u}rgen and Egle, Wilhelm J. and Hafner, Wolfgang and Derst, Gerhard and Matthes, Axel and D{\"o}hring, Thorsten}, title = {Fabrication of a demonstration mandrel for ESA's XEUS mirror development program}, series = {Proceedings of SPIE}, volume = {4012}, booktitle = {Proceedings of SPIE}, pages = {559 -- 566}, year = {2000}, subject = {R{\"o}ntgenteleskop}, language = {en} } @inproceedings{FriedrichBraeuningerBurkertetal.1998, author = {Friedrich, Peter and Br{\"a}uninger, Heinrich W. and Burkert, Wolfgang and D{\"o}hring, Thorsten and Egger, Roland and Hasinger, G{\"u}nther and Oppitz, Andreas and Predehl, Peter and Tr{\"u}mper, Joachim Ernst}, title = {X-ray tests and calibrations of the ABRIXAS mirror systems}, series = {Proceedings of SPIE}, volume = {3444}, booktitle = {Proceedings of SPIE}, pages = {369 -- 379}, year = {1998}, subject = {Spiegelteleskop}, language = {en} } @article{DoehringAschenbachBraeuningeretal.1998, author = {D{\"o}hring, Thorsten and Aschenbach, Bernd and Br{\"a}uninger, Heinrich W. and Briel, Ulrich G. and Burkert, Wolfgang and Egger, Roland and Hasinger, G{\"u}nther and Hippmann, Horst and Kendziorra, Eckhard and Oppitz, Andreas and Pfeffermann, Elmar and Predehl, Peter and Str{\"u}der, Lothar and Tr{\"u}mper, Joachim Ernst}, title = {X-ray qualification of the ABRIXAS telescope}, series = {Astronomical Notes - Astronomische Nachrichten}, volume = {319}, journal = {Astronomical Notes - Astronomische Nachrichten}, number = {1-2}, pages = {140 -- 140}, year = {1998}, subject = {Spiegelteleskop}, language = {en} } @article{DoehringAschenbachBraeuningeretal.1997, author = {D{\"o}hring, Thorsten and Aschenbach, Bernd and Br{\"a}uninger, Heinrich W. and Burkert, Wolfgang and Egger, Roland and Oppitz, Andreas}, title = {Charakterisierung von R{\"o}ntgensatelliten}, series = {Hf-Report: Hochfrequenztechnik, Optoelektronik, Mikrowellentechnik, Kommunikationstechnik}, volume = {11}, journal = {Hf-Report: Hochfrequenztechnik, Optoelektronik, Mikrowellentechnik, Kommunikationstechnik}, number = {4}, pages = {30 -- 34}, year = {1997}, subject = {R{\"o}ntgenstrahlung}, language = {de} } @article{DoehringSchreiber2009, author = {D{\"o}hring, Thorsten and Schreiber, Ulrich}, title = {Glass ceramics - foundation for highest precision}, series = {Photonik international}, volume = {2009}, journal = {Photonik international}, number = {1}, pages = {17 -- 19}, year = {2009}, subject = {Glaskeramik}, language = {de} } @inproceedings{JedamzikDoehringJohannsson2009, author = {Jedamzik, Ralf and D{\"o}hring, Thorsten and Johannsson, Thoralf}, title = {CTE characterization of ZERODUR® for the ELT century}, series = {Proceedings of SPIE}, volume = {7425}, booktitle = {Proceedings of SPIE}, number = {742504}, year = {2009}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringHartmannLentes2009, author = {D{\"o}hring, Thorsten and Hartmann, Peter and Lentes, Frank-Thomas}, title = {Heritage of ZERODUR® glass ceramic for space applications}, series = {Proceedings of SPIE}, volume = {7425}, booktitle = {Proceedings of SPIE}, number = {74250L}, year = {2009}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{HartmannNattermannDoehring2009, author = {Hartmann, Peter and Nattermann, Kurt and D{\"o}hring, Thorsten}, title = {ZERODUR® glass ceramics for high stress applications}, series = {Proceedings of SPIE}, volume = {7425}, booktitle = {Proceedings of SPIE}, number = {74250M}, year = {2009}, subject = {Spiegelteleskop}, language = {en} } @inproceedings{DoehringJedamzikWesterhoff2009, author = {D{\"o}hring, Thorsten and Jedamzik, Ralf and Westerhoff, Thomas}, title = {Four decades of ZERODUR mirror substrates for astronomy}, series = {Proceedings of SPIE}, volume = {7281}, booktitle = {Proceedings of SPIE}, number = {728103}, year = {2009}, subject = {Spiegelteleskop}, language = {en} }