Changes between Version 274 and Version 275 of AstroTechTalk
- Timestamp:
- 20 Mar 2017, 12:56:04 (7 years ago)
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AstroTechTalk
v274 v275 37 37 || '''17.03.2017 (11hrs, MPIA)''' || '''Wilma Trick''' || '''The Secret Life of the Galaxies'''[[BR]][[BR]]During dark nights the Milky Way is observable as a wide band of stars and dust in the sky. The Milky Way is our home galaxy hosting also our solar system, but is only one of one hundred billion galaxies in the whole universe. There are spiral galaxies, huge elliptic galaxies, cloud-like dwarf galaxies, and galaxies dancing around each other before they finally merge into one. [[BR]][[BR]]Where do all these galaxies come from?[[BR]]And why do they look as they look?[[BR]][[BR]]In the past decades astro physicists have act as space detectives and have collected evidence for a better understanding of galaxy formation and evolution. One of the prime witnesses: The motion of stars. This led for instance to the discovery of super massive black holes and the mysterious dark matter of which we actually know only very little, apart from its omnipresent existence and its necessity for the formation of galaxies. [[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2017S1/2017-03-17_geheimesLeben.pdf Slides: German][[BR]]Questions: German, English || 38 38 || '''24.03.2017[[BR]](11hrs, MPIA)''' || '''Robert Harris (ZAH, LSW)''' || '''Photonic Reformatting'''[[BR]][[BR]]As astronomical telescopes grow in size the instruments behind them also grow. As the individual components become bigger, they become more difficult to manufacture, increasing the cost and making them more fragile (meaning unless you’ve got a particularly careful PhD student the cost of having spares also goes up). This has lead to many instruments using techniques such as image slicing to reduce the size of individual components and make the point spread function from the telescope manageable. [[BR]][[BR]]Astrophotonics is a field that aims to combat the problems of size, cost and complexity. The idea is to take devices and technologies developed for the field of photonics and make use of them in astronomy. In this talk Robert Harris will describe his past, current and future work in a subfield of astrophotonics, photonic reformatting. This is akin to image slicing, but occurs within the fibre, meaning the devices are fully integrated. He will discuss both theoretical and practical aspects of his work and draw conclusions as to where he feels the field will go next.[[BR]][[BR]]Presentation: English[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2017S1/2017-03-24_Reformatting.pdf Slides: English][[BR]]Questions: German, English || 39 || 31.03.2017 (10hrs, HdA) || Damien Gratadour (Observatoire de Paris) || !GreenFlash, an AO-Realtime-Computer Prototype for the EELT||39 || '''31.03.2017 (10hrs, HdA)''' || '''Damien Gratadour (Observatoire de Paris)''' || '''Green Flash : Energy efficient real-time computing for ELTs'''[[BR]][[BR]]Controlling sophisticated AO systems on the future ELTs is a challenge which is yet to be resolved. As the ELTs are adaptive telescopes, this is critical to all ELT instrumentation. Green Flash is an international EU funded joint industrial and academic project intended to study and exploit future and emerging computing technologies for ELT scale AO real-time control. This includes the hard real-time data pipeline, the soft real-time supervisor module as well as a real-time capable ELT-scale simulation to test and verify proposed solutions. [[BR]][[BR]]To date, we have initiated in-depth studies on GPUs, MICs and FPGAs. Moreover, beyond computing capabilities, it is critical for these future AO RTC to address the data flow challenges both in terms of the large rate of streaming data from sensors and in terms of heterogeneous data streams in the system. A strong emphasis is thus made in the project around interconnect strategies using dedicated hardware, middleware and software. With this R&D program we aim at feeding the E-ELT AO systems preliminary design studies, led by the selected first-light instruments consortia, with technological validations supporting the designs of their RTC modules. [[BR]][[BR]]The culmination of the project will be an on-sky demonstration of a chosen solution. However, all proposed solutions will include a detailed study of capabilities and scalability. Here we review the project goals and the results from the studies at the mid-point of this three year endeavor and we describe the downselection process that will lead to the design of a full featured prototype to be eventually implemented in the lab and tested with the real-time simulator.[[BR]][[BR]]Presentation: English[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2017S1/2017-03-31_GreenFlash.pdf Slides: English][[BR]]Questions: German, English || 40 40 || 07.04.2017 || || || 41 41 || 14.04.2017 || -- || Good Friday ||