| 28 | 28 | || '''25.09.2015''' || '''Markus Feldt''' || '''SPHERE - Lessons learned''' [[BR]] [[BR]]This talk discusses some of the project-related findings, which emerged during design, construction and commissioning of the SPHERE instrument.[[BR]]Rather than presenting the usual summary of successfully accomplished milestones, the focus is more on failures during project execution. But also correctly implemented things help to learn for the future... [[BR]][[BR]]Mainly the MPIA contributions will be handled (data reduction software, ADCs, detector positioning unit) extended by some analyses of the overall project execution. Markus Feldt will very briefly also address the loss of the competition phase during the pre-SPHERE period. [[BR]][[BR]]For sure, some of the findings are not new and some of the failures were repeated from other projects. For some of the undesirable developments there are no easy solutions - often the opinions of how to tackle a problem are controversial. This makes the communication of possible root causes of nasty errors even more important and helps to find corrective actions and countermeasures. [[BR]][[BR]]Presentation: German [[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/WikiStart/2015-09-25_SPHERE_Lessonslearned.pdf Slides: German][[BR]]Questions: German, English || |
| 29 | 29 | || '''02.10.2015''' || '''Kai Noeske''' || '''The history of light in the universe[[BR]][[BR]]'''Nearly all visible light is created in the outer layer of stars. Therefore, the visible light of the universe explains the history of a star and when it was born.[[BR]][[BR]]We will learn how the birth of stars is connected with large structures of matter and the galaxies. The understanding of the history and the birth of stars plays a key role in understanding the universe and its evolution. This knowledge explains the assembly of structure in dark matter, tells us about physics behind the birth of stars and gas in galaxies and helps to understand the creation of heavy chemical elements, which finally lead to the generation of earth like planets and the live on it.[[BR]][[BR]]As of late, the history of stars can be observed with large telescopes from ground and space up to more than 12 billion years into the past and in short even to a 100 million years after the big bang. These observations are accompanied by enormous computer simulations to understand the physics in the stars and in the Galaxies better and better. [[BR]][[BR]]Presentation: German [[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2015S2/2015-10-02_Geschichte_des_Lichts.pdf Slides: German][[BR]]Questions: German, English || |
