Changes between Version 9 and Version 10 of AstroTechTalk
- Timestamp:
- 27 Aug 2014, 12:54:25 (10 years ago)
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AstroTechTalk
v9 v10 25 25 26 26 ||'''Date''' ||'''Speaker''' ||'''Topic''' || 27 || 12.09.2014 || Martin Kürster ||||27 || '''12.09.2014''' || '''Martin Kürster''' || '''The project landscape of the technical departments'''[[BR]][[BR]]Here's another one of those funny names for a new instrument. But actually, [[BR]]what is it about? Do you also sometimes feel like this? Martin Kürster will [[BR]]give us an overview of the instruments we are building at MPIA. From this, [[BR]]we should be able to get the connection between those acronyms and the [[BR]]instruments. But not only that, after several years of heavy overbooking of [[BR]]the technical departments the mid-term future of the project landscape has [[BR]]recently become a bit unclear due to repeated delays of the European [[BR]]Extremely Large Telescope (E-ELT). Martin Kürster will also tell us about [[BR]]possible future initiatives, project acquisitions still under discussion, that will [[BR]]pose new challenges for the technical departments.[[BR]][[BR]]Talk: German [[BR]]Slides: English [[BR]]Questions: German, English || 28 28 || '''19.09.2014''' || '''Ralf-Rainer Rohloff''' || '''Precision metal optics over a large temperature range '''[[BR]] [[BR]]Since long, metal optics are an important part of astronomical instruments. Often [[BR]]diamond turned mirrors of aluminum (Al6061) are used. But it is difficult to polish [[BR]]aluminum. Therefore, the mirror is coated with Nickle Phosphor layer, which can [[BR]]be polished more easily. This is very important at shorter wavelength. But the [[BR]]mirrors deform with temperature changes because of the different coeffient of [[BR]]thermal expansion between aluminum and NiP. [[BR]][[BR]]Ralf-Rainer will tell us about a collaboration between MPIA Heidelberg and IOF [[BR]]Jean, which developed and tested a new material to minimize the temperature [[BR]]related deformation of such mirrors. The material consists of an aluminum [[BR]]silicate, which has a coefficient of thermal expansion close to NiP. Thus, the [[BR]]deformation could be reduced drastically. But now the work just started. Is it [[BR]]possible to built a mirror of this material? Does the material change with time? [[BR]]The best answer would be the study could show that such mirror can be built [[BR]]and are stable over time! [[BR]][[BR]]Talk: German [[BR]]Slides: English [[BR]]Questions: German, English || 29 29 || 26.09.2014 || || || … … 35 35 || 07.11.2014 || || || 36 36 || 14.11.2014 || Stefan Meister || Azubipreise 2011-2014 || 37 || 21.11.2014 || ?? Jörg-Uwe Pott 37 || 21.11.2014 || ?? Jörg-Uwe Pott || ?? MICADO || 38 38 || 28.11.2014 || || || 39 39 || 05.12.2014 || || ||
