Changes between Version 378 and Version 379 of AstroTechTalk

Timestamp:

29 Oct 2018, 15:54:56 (6 years ago)

Author:

Ralph Hofferbert

Comment:

--

AstroTechTalk

@@ -31 +31 @@
 || '''26.10.2018[[BR]](11hrs, MPIA Hoersaal)''' || '''Armin Huber''' || '''Slide-Show:[[BR]]Life at the VLT - Part 2 of the famous photo reportage'''[[BR]][[BR]]Today, Armin Huber will present us some impressions of how installation work at the Very large Telescope (VLT) looks like. To make it a complete story, he certainly will also talk about the trip to Chile, the accommodation and food options, and last but not least the recreation possibilities.[[BR]][[BR]]And while part 1 about the LBT included Native Americans and Red Squirrels, this time we will hear about James Bond and a swimming pool at a height of 2400m ASL.[[BR]] [[BR]]Lots of photos - only a little text. [[BR]] [[BR]]Presentation: German ||
 || 02.11.2018 || -- || Bridging day after All Saints's Day ||
-|| 09.11.2018 || Faustine Cantalloube || Peering through the SPHERE high contrast images ||
+|| '''09.11.2018[[BR]](11hrs, MPIA Hoersaal)''' || '''Faustine Cantalloube''' || '''Peering through the SPHERE high contrast images[[BR]]'''[[BR]]When looking at the VLT/SPHERE images we can already infer a few error  terms that were expected when designing the instrument. But when going  deeper in contrast there may arise some new error terms that were not  expected. This talk presents a review of all these terms, based on what we can  now see in the focal plane images. [[BR]][[BR]]Faustine Cantalloube will then focus on one of the main  killers of high contrast imaging: the wind driven halo which appears in the  images when the turbulence is evolving faster than the AO correction  loop frequency could account for. For detection of extended features, this effect is  affecting the detection capabilities at short separation (below 300mas),  which is the region of interest for most science cases. This talk is a  short review of this effect, including its recently acknowledged  asymmetry and potential solutions to get over it.[[BR]][[BR]]Presentation: English[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2018S2/2018-11-09_HCI_SPHERE.pdf Slides: English][[BR]]Questions: German, English ||
 || 16.11.2018 || || ||
 || 23.11.2018 || || ||