Changes between Version 217 and Version 218 of AstroTechTalk
- Timestamp:
- 15 Sep 2016, 14:43:16 (8 years ago)
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AstroTechTalk
v217 v218 27 27 || '''16.09.2016''' || '''Michael Biermann (ARI)''' || '''GAIA as seen by a First Look Scientist[[BR]]'''[[BR]]As a daily routine, the Gaia First Look Scientists evaluate the quality of the scientific data and check the status of the Gaia instruments. In this talk a few examples out of the pool of findings by the Gaia First Look Scientists will be presented and discussed. This should -on the one hand side- highlight the capability of this highly accurate astrometry mission, but -on the other hand side- also demonstrate the problems of the related data analysis work. [[BR]][[BR]]Presentation: German [[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2016S2/2016-09-16_GaiaFirstLook.pdf Slides: English][[BR]]Questions: German, English || 28 28 || '''23.09.2016''' || '''Anna Boehle (UCLA)''' || '''Upgrade of the detector in the integral field spectrograph OSIRIS[[BR]]'''[[BR]]OSIRIS is a near-infrared (1 - 2.5 microns) integral field spectrograph (IFS) on the Keck I 10-meter telescope in Hawaii. This adaptive-optics-fed instrument uses an array of small lenses to sample a rectangular section of the focal plane, producing up to 3,000 spectra simultaneously with a spectral resolution of ~3,800 and diffraction-limited spatial resolution. The unique capabilities of this IFS have allowed it to contribute to a variety of science programs since its commissioning in 2005, such as characterizing the atmospheres of extrasolar planets and tracing the motions of gas and stars at the centers of the Milky Way and other galaxies.[[BR]][[BR]]In January 2016, the detector in OSIRIS was upgraded from the original Rockwell Hawaii-2 to a Teledyne Hawaii-2RG with lower read noise, lower dark current, and higher quantum efficiency. In addition to the upgraded detector, the detector head was also mounted on a linear stage, allowing the position of the detector to be accurately adjusted along the optical path when the instrument is at cryogenic temperatures (~80 K). This linear stage greatly reduced the number of cool downs required to put the detector image plane at the spectrograph camera focus and adjust any residual tip/tilt of the detector image plane. [[BR]][[BR]]In this talk, Anna Boehle will give a brief overview of integral field spectroscopy and its advantages and challenges and also present the details and the results of the upgrade of the OSIRIS detector.[[BR]][[BR]]Presentation: English[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2016S2/2016-09-23_OSIRIS.pdf Slides: English][[BR]]Questions: German, English || 29 || '''30.09.2016''' || '''Martin Kuerster''' || '''A special planet on our cosmic doorstep: Proxima Centauri b'''[[BR]][[BR]]The recent discovery of a potentially Earth-like planet around our nearest stellar neighbour Proxima Centauri has made a splash. In this talk Martin Kürster will tell us how this discovery was made, why it is special, and how the study of this planet is supposed to continue.[[BR]][[BR]]The talk will be widely understandable as the speaker would like to reach all interested colleagues at the institute. After all, each of us contribute their share to making these amazing scientific results possible.[[BR]][[BR]]Presentation: German [[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2016S2/2016-09-30_Proximab.pdf Slides: English][[BR]]Questions: German, English ||29 || '''30.09.2016''' || '''Martin Kuerster''' || '''A special planet on our cosmic doorstep: Proxima Centauri b'''[[BR]][[BR]]The recent discovery of a potentially Earth-like planet around our nearest stellar neighbour Proxima Centauri has made a splash. In this talk Martin Kürster will tell us how this discovery was made, why it is special, and how the study of this planet is supposed to continue.[[BR]][[BR]]The talk will be widely understandable as the speaker would like to reach all interested colleagues at the institute. After all, each of us contribute our share to making these amazing scientific results possible.[[BR]][[BR]]Presentation: German [[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2016S2/2016-09-30_Proximab.pdf Slides: English][[BR]]Questions: German, English || 30 30 || 07.10.2016 || Silvia Scheithauer || CIAO - Wavefront sensors for GRAVITY || 31 31 || 14.10.2016 || Claudia Reinlein (Fraunhofer IOF, Jena) || Deformable mirrors ||