Changes between Version 24 and Version 25 of AstroTechTalk

Timestamp:

10 Oct 2014, 13:46:29 (10 years ago)

Author:

gaessler

Comment:

Casey link

AstroTechTalk

@@ -29 +29 @@
 || 26.09.2014 || '''Tom Herbst''' || '''LINC-NIRVANA - the path to the telescope[[BR]][[BR]]'''[[BR]]LINC-NIRVANA is an ambitious high resolution imager for the LBT, and it is  currently the largest single instrument contribution at the MPIA. We  are also the Principal Investigator institute, and hence are  responsible for the complex integration and testing phase now underway.[[BR]][[BR]]LN uses Multi-Conjugate Adaptive Optics (MCAO) for high-sky-coverage diffraction-limited imagery and (eventually) interferometric beam combination. The last two years have seen both successes and challenges. On the one hand, final integration is proceeding well in the lab. We also achieved First Light at the LBT with the Pathfinder experiment. On the other hand, funding constraints have forced a significant re-planning of the overall instrument implementation. Tom Herbst presents the  progress and plans for bringing the remainder of the instrument online  at the telescope in the next year.'''[[BR]][[BR]]'''Talk: German[[BR]]Slides: English[[BR]]Questions: German, English ||
 || 03.10.2014 ||-- ||Tag der deutschen Einheit ||
-|| 10.10.2014 || '''Casey Deen''' || '''Alignment challenges and strategies for the GRAVITY wavefront sensor cryostat and tower[[BR]]'''[[BR]]Aligning a handful of small mirrors,filters, and lenses with a laser shouldn't be so difficult, right? Surely no more than an afternoon!  But after another week spent huddled in a dark laboratory, the light still does not end up in the correct position on the detector!  In order to avoid this frustrating situation, an alignment strategy is an important part of building any instrument. Casey Deen presents the alignment concept for the GRAVITY wavefront sensor. This near-infrared sensor works on the Shack-Hartman Principle. Due to their wavelength range, near-infrared sensors have a larger selection of bright guide stars than do optical sensors, as most stars are brightest in the infrared.  Optical light is also attenuated more by interstellar dust, making optical sensors impractical in dusty regions like the Galactic Center. The wavefront sensors are located in the Coude rooms of the Unit Telescopes of the Very Large Telescope (VLT). The location and the optical design of the wavefront sensors present several challenges for alignment. Casey and his colleagues present their strategy for alignment of the optics, and are looking forward to hearing opinions, advice and concerns from the assembled experts at MPIA. Expect a lively discussion and insight on what is laboratory work about! [[BR]][[BR]]Talk: English                  [[BR]]Slides: German[[BR]]Questions: German, English ||
+|| 10.10.2014 || '''Casey Deen''' || '''Alignment challenges and strategies for the GRAVITY wavefront sensor cryostat and tower[[BR]]'''[[BR]]Aligning a handful of small mirrors,filters, and lenses with a laser shouldn't be so difficult, right? Surely no more than an afternoon!  But after another week spent huddled in a dark laboratory, the light still does not end up in the correct position on the detector!  In order to avoid this frustrating situation, an alignment strategy is an important part of building any instrument. Casey Deen presents the alignment concept for the GRAVITY wavefront sensor. This near-infrared sensor works on the Shack-Hartman Principle. Due to their wavelength range, near-infrared sensors have a larger selection of bright guide stars than do optical sensors, as most stars are brightest in the infrared.  Optical light is also attenuated more by interstellar dust, making optical sensors impractical in dusty regions like the Galactic Center. The wavefront sensors are located in the Coude rooms of the Unit Telescopes of the Very Large Telescope (VLT). The location and the optical design of the wavefront sensors present several challenges for alignment. Casey and his colleagues present their strategy for alignment of the optics, and are looking forward to hearing opinions, advice and concerns from the assembled experts at MPIA. Expect a lively discussion and insight on what is laboratory work about! [[BR]][[BR]]Talk: English                  [[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/WikiStart/2014-10-10_GRAVITY_alignment.pdf Slides: German][[BR]]Questions: German, English ||
 || 17.10.2014 || '''Klaus Meisenheimer''' || '''PANIC - on the way to the Calar Alto[[BR]][[BR]]'''No, that's not a talk about the infamous taxi transportation to the Calar Alto, at which some astronomer turned the red color of his fresh sun burn into white or even green. PANIC is a panoramic imager. Klaus Meisenheimer will tell us more about its capabilities. He will also[[BR]]show that the tests in the laboratory demonstrated good image quality and high throughput. Currently, the instrument is on its way to the Calar Alto. After arrival it will be re-integrated and will see first light in beginning of November. In this presentation, we also hear what happened to PANIC in this most interesting phase of a project and learn what will be observed with this instrument to understand our universe better.[[BR]][[BR]]Talk: German                  [[BR]]Slides: English[[BR]]Questions: German, English ||
 || 24.10.2014 || '''Jacopo Farinato[[BR]]'''(OA Padova, SHARK-PI) || '''A SHARK for the Laarge Binocular Telescope (LBT)[[BR]][[BR]]'''A SHARK in the desert of Arizona, are you kidding? This presentation will not be about the killer fish. In April this year, SHARK was selected by the LBT board as possible second generation instrument. The instrument team was asked to move on with a Phase A study. The concept of the instrument goals on studying planets in the near-infrared with a coronograph and in the visual with a integral field spectrograph. But it will serve also[[BR]]other science cases. Jacopo Farinato will explain us the details of the instrument, what happened since April and how the consortium and instrument evolved. There have been different opinion between LBT Observatory and the consortium how the implementation should go on. Make up your own opinion if this is the right path. It might be still time to influence it.'''[[BR]]'''[[BR]]Talk: English                  [[BR]]Slides: English[[BR]]Questions: English, (German) ||