Changes between Version 344 and Version 345 of AstroTechTalk
- Timestamp:
- 20 Feb 2018, 08:32:25 (6 years ago)
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AstroTechTalk
v344 v345 28 28 || 09.02.2018[[BR]](10hrs, HdA) || || || 29 29 || '''16.02.2018[[BR]](10hrs, HdA)''' || '''Robert Harris (ZAH-LSW)''' || '''Astrophotonics'''[[BR]][[BR]]The field of Astrophotonics bridges the gap between the small mass-produced devices manufactured for the telecommunications industry and large one-off astronomical instruments. [[BR]][[BR]]In this talk Robert Harris will summarise the developments in the field, the technologies that made this possible and some of the successes. He will examine where these technologies could be of use and some of the future devices which could be manufactured.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2018S1/2018-02-16_AP.pdf Slides: English][[BR]]Questions: German, English || 30 || 23.02.2018[[BR]](10hrs, HdA) || Ernest Michael (Universidad de Chile) || Heterodyne Wavefrontsensor||30 || '''23.02.2018[[BR]](10hrs, HdA)''' || '''Ernest A. Michael (RAIG, University of Chile)''' || '''Fiber-based Heterodyne Infrared Interferometer: Towards a small proof-of-principle Prototype at 1.55 µm '''[[BR]] [[BR]]Ernest Michael presents the concept for a comparatively inexpensive near-infrared heterodyne interferometer based on commercial 1.55µm fiber components. First lab results were obtained for the telescope to single-mode fiber coupling control, LO phase-stabilization between both telescopes, and the heterodyne correlation receiver system. He also discusses the applicability of this concept for long-baseline, high telescope number systems and mid-infrared wavelengths.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2018S1/2018-02-23_HeterodyneInterferometer.pdf Slides: English][[BR]]Questions: German, English || 31 31 || 02.03.2018[[BR]](10hrs, HdA) || Gabriele Rodeghiero || The MICADO Calibration Assembly (MCA) || 32 32 || '''09.03.2018[[BR]](11hrs, MPIA Hoersaal)''' || '''Joerg Wagner (ISD, University of Stuttgart)''' || '''J.G.F. Bohnenberger: [[BR]]Astronomer, Geodesist and Inventor of the Gyroscope'''[[BR]][[BR]]Johann Gottlieb Friedrich Bohnenberger (1765-1831) was a professor of physics, mathematics, and astronomy at the University of Tuebingen, the scientific head surveying officer of the early Kingdom of Wuerttemberg, and an important German astronomer of the 19th century. He made both major contributions to introducing modern geodesy in Germany and invented various physical instruments. The "Machine of Bohnenberger" is considered the first gyro with cardanic suspension and forms the precursor of Foucault’s Gyroscope of 1852. This presentation discusses this apparatus as well as the life and the scientific work of J.G.F. Bohnenberger.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2018S1/2018-03-09_Bohnenberger.pdf Slides: English][[BR]]Questions: German, English ||
