Institut für Geodäsie und Geoinformation (IGG): Browsing Institut für Geodäsie und Geoinformation (IGG) by Author "Nothnagel, Axel"
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Estimation of Focal Length Variations of a 100-m Radio Telescope's Main Reflector by Laser Scanner Measurements
Holst, Christoph; Zeimetz, Philipp; Nothnagel, Axel; Schauerte, Wolfgang; Kuhlmann, Heiner (2012-08)Due to gravitation, the main reflector of a radio telescope underlies a deformation which causes a change in focal length depending on the variations of the elevation angle of the telescope. In order to estimate these ... -
Improved area-based deformation analysis of a radio telescope’s main reflector based on terrestrial laser scanning
Holst, Christoph; Nothnagel, Axel; Blome, Martin; Becker, Philip; Eichborn, Malwin; Kuhlmann, Heiner (2015-03-14)The main reflectors of radio telescopes deform due to gravitation when changing their elevation angle. This can be analyzed by scanning the paraboloid surface with a terrestrial laser scanner and by determining focal length ... -
Proceedings of the 20th Meeting of the European VLBI Group for Geodesy and Astronomy: March 29-30, 2011
Walter, Alef; Bernhart, Simone; Nothnagel, Axel (2011)On March 29 and 30, 2011, the European VLBI Group for Geodesy and Astronomy (EVGA) held its 20th meeting on the invitation of the Max Planck Institute for Radio Astronomy, Bonn, Germany. Starting 31 years ago on the ... -
Proceedings of the First International Workshop on VLBI Observations of Near-field Targets, October 5-6, 2016
Nothnagel, Axel; Jaron, Frédéric (2017)Diese Veröffentlichung erscheint anlässlich des First International Workshop on VLBI Observations of Near-field Targets, der am 4 - 5. Oktober 2016 im Institut für Geodäsie und Geoinformation stattfand. First International ...