Changes between Version 1 and Version 2 of OldPresentations2019S1

13 Sep 2019, 11:32:30 (4 years ago)
Ralph Hofferbert



  • OldPresentations2019S1

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     1||'''Date''' ||'''Speaker    ''' ||'''Topic''' ||
     2|| 04.01.2019 || -- || Christmas Break ||
     3|| '''11.01.2019[[BR]](11hrs, MPIA Hoersaal)''' || '''Carlos Correia (LAM)''' || '''Making it up to E(A)LT's: Extremely (Adaptive) Large Telescopes'''[[BR]][[BR]]  Observations with giant segmented ground telescopes promise to  revolutionise VIS and NIR astronomy. Yet, to take full benefit of the  collecting power, resolution (and sensitivity) of these huge machines,  adaptive optics systems are key and are poised to become mainstream.  They are to assist 100% of the observations, for ELTs       are too  large to operate as conventional seeing-limited telescopes. [[BR]] [[BR]]Carlos  Correia will provide an overview of current developments on novel  wave-front sensing techniques using natural and laser guide stars,  advanced wave-front reconstruction for the different AO modes and the  challenges faced when customising AO post-processing in order to meet  stringent science goals. Furthermore, he will show how these  developments are propelling the design of HARMONI, the European        Extremely Large Telescope's 1st light IFU.[[BR]][[BR]]Presentation: English[[BR]][ Slides: English][[BR]]Questions: German, English ||
     4|| 18.01.2019 || || ||
     5|| '''25.01.2019'''[[BR]]'''(11hrs, HdA Auditorium)''' || '''Martin Kürster''' ||'''Double Feature:'''[[BR]][[BR]]'''(1) Introduction of project NTE '''[[BR]]  MPIA has joined a project for a new instrument for the Nordic Optical  Telescope (NOT) on La Palma, called NOT Transient Explorer (NTE).  It  will provide medium resolution optical/NIR spectroscopy and imaging in a  rapid response mode to catch transient astronomical phenomena as fast  as possible.  The consortium building the instrument is led by the Niels  Bohr Institute in Copenhagen who have asked MPIA to provide NTE with  our in-house read-out electronics (ROE) for its NIR cameras, i.e. two  systems for the imaging and spectroscopic channels plus one spare unit.   For us, this is a unique opportunity to bring our ROE to a new facility  and continue contributing our special expertise in this field. [[BR]]'''[[BR]](2) CARMENES finds Super-Earth at Barnard's Star - after all''' [[BR]]Up  until the 1990s astronomical textbooks claimed that two Jupiter-like  planets were orbiting Barnard's star, the closest single star to the  Sun.  This claim was based on astrometric  measurements, which determine  the reflex motion of a star caused by the gravitational pull of its  planets.  More precise observations demonstrated later that these  planets do not exist and that the   apparent motion of the star had been  caused by uncorrected instrumental effects.  Actually, until today, the  astrometric technique has not found a single exoplanet. Recently  though, the well-established radial velocity method has led to a new  exoplanet claim around Barnard's star, a cold Super-Earth, the first of  its type near the snow line of its system.  This difficult discovery was  made possible by combining data from seven instruments among which  CARMENES was a key player.  It will require independent confirmation,  expected to come after 2021 from the most precise astrometric  measurements ever to be provided by the final  release of data from the  GAIA satellite.[[BR]][[BR]] Presentation: German[[BR]]  [ Slides: English][[BR]]Questions: German, English ||
     6|| 01.02.2019 || || ||
     7|| 08.02.2019 || || ||
     8|| '''15.02.2019[[BR]](11hrs, MPIA Hoersaal)''' || '''Vianak Naranjo''' || '''Status Update: construction work at MPIA's basement[[BR]]'''[[BR]]How  do the offices look like? How far are the new showers? Are the new  lamps already installed?  We ask ourselves these and many other  questions, because without having a look, we really don't know how is it  going down there.[[BR]][[BR]]Vianak Naranjo will show us with pictures what is the current situation with the construction activities in the basement.[[BR]][[BR]]Presentation: German[[BR]]Slides: English[[BR]]Questions: German, English ||
     9|| '''22.02.2019 (11hrs, [[BR]]MPIA Hoersaal)''' || '''Sebastiaan Haffert (Leiden University)''' || '''The Leiden EXoplanet Instrument (LEXI): observing exoplanets with high-resolution integral-field spectroscopy'''[[BR]][[BR]]After   several successful decades of exoplanet detection, we are now at the   starting point of exoplanet characterization. Direct Imaging allows for   unambiguous characterization of exoplanets and their atmospheres. With   the ELT coming up in the next decade we will be able to directly image   several tens of planets. [[BR]][[BR]]One of the challenges to overcome is  the  slowly drifting non-common path error which is limiting the  detection  of exoplanets at a few lambda/D. High-resolution spectroscopy  can be  used to overcome these speckles and probe closer and deeper to  the star  and at the same time characterize the exoplanet. To that end  we have  developed the Leiden EXoplanet Intrument (LEXI), a pathfinder  for the  ELT/EPICS, aimed at overcoming the huge planet/star contrasts  at a few  lambda/D and characterizing exoplanets with high-resolution   spectroscopy. During this talk Sebastiaan Haffert will show and discuss  the results obtained with LEXI.[[BR]][[BR]]Presentation: English[[BR]][ Slides: English][[BR]]Questions: German, English ||
     10|| 01.03.2019 || || ||
     11|| 08.03.2019 || || ||
     12|| 15.03.2019 || || ||
     13|| '''22.03.2019[[BR]](10hrs, HdA Auditorium)''' || '''Noah Schwartz (ATC Edinburgh)''' || '''Adaptive Optics for HARMONI: a diffraction-limited ELT[[BR]]'''[[BR]]HARMONI   is a visible and near-infrared integral field spectrograph, providing   the ELT’s core spectroscopic capability, starting at First Light. To  get  the full  sensitivity and spatial resolution gain, HARMONI will  work at  diffraction limited scales. This will be possible due to two   adaptive optics (AO) systems, complementary to each other. The first one   is a simple but efficient Single Conjugate AO system (good   performance, low sky coverage), fully integrated in HARMONI itself. The   second one is a Laser Tomographic AO system, providing a very high   sky-coverage to the instrument. Both AO modes for HARMONI have gone   through the Preliminary Design Review at the end  of 2017, and will  enter in Final Design phase from early 2018 to early  2020.[[BR]][[BR]] In   this talk, Noah Schwartz will provide an overview of HARMONI and on the  on-going  developments in the AO systems. He will focus on the single  conjugate  mode (SCAO) and  in particular the SCAO wavefront sensing  using a Pyramid. He will also  detail a set of key items that have been  addressed during the PDR,  especially the “Island Effect” produced by  the ELT's segmented pupil, and  how the instrument team plans to tackle  it.[[BR]][[BR]]Presentation: English[[BR]][ Slides: English][[BR]]Questions: German, English ||
     14|| 29.03.2019 || || ||
     15|| '''05.04.2019[[BR]](11hrs, [[BR]]MPIA Hoersaal)''' || '''Robert Harris [[BR]](ZAH, LSW)''' || '''A multi-core integral field unit (MCIFU) instrument: Spectroscopy of disks and planets using single mode fibres[[BR]]'''[[BR]]They   say the best things in life are free and whilst that is not  technically  true, it’s amazing what you can do with a shoestring budget  and enough  favours (including a mystery contribution from the MPIA).  Today, Robert Harris will  present LSW's multi-core integral field unit  (IFU) instrument, a single  mode IFU, designed to filter starlight and  characterise directly imaged  exoplanets with a R ~ 5000. It is based  upon the SCAR concept, using the  spatial filtering properties of single  mode fibres to increase the  star-planet contrast.[[BR]][[BR]]Once  built,  the full instrument will be fed by an AO corrected beam, with  the light  being captured by a custom array of 3D printed microlenses  sitting on a  73 core multi-core fibre, which will feed a reformatter.  This in turn  will form the pseudo-slit of a diffraction limited  spectrograph, with a  footprint of around ~ 30cm x 50cm, not bad for an  instrument that is  designed to sit behind an 8 m class telescope. It  will have its  preliminary integration and testing in July 2019 at the  4.2 m William  Herschel telescope in La Palma. Here we hope to fully  characterise the  instrument and hopefully get some nice scientific  results before taking  the instrument onto bigger and better things! [[BR]][[BR]]Presentation: English[[BR]][ Slides: English][[BR]]Questions: German, English ||
     16|| 12.04.2019 || || ||
     17|| 19.04.2019 || -- || Good Friday ||
     18|| 26.04.2019 || -- || Easter Break ||
     19|| '''03.05.2019[[BR]](11hrs, MPIA Hoersaal)''' || '''Anna Sippel''' || '''Black holes in globular clusters - A black hole love story'''[[BR]][[BR]]Globular  clusters are some of the largest and heaviest star clusters and exist  in and around galaxies, like our own Milky Way. Their stellar density is  extremely high, inevitably leading to frequent encounters. At the same  time, globular clusters house the final products of stellar evolution,  such as black holes among others. In combination with the unique stellar  dance in this very special environment at the center of a globular  cluster, binary black holes can form. Using precise computer simulations  I will show under which conditions these binary stars can eventually  evolve to become gravitational wave sources. [[BR]][[BR]]Presentation: German[[BR]][ Slides: German] [[BR]]Questions: German, English ||
     20|| 10.05.2019 || || ||
     21|| 17.05.2019 || || ||
     22|| '''24.05.2019[[BR]](10hrs, HdA Auditorium)''' || '''Stefan Rist (HS Mannheim)''' || '''Lithographic optical elements in the semiconductor production: Optics at the limit'''[[BR]][[BR]]Moore's  Law states that the number of transistors in an integrated  micro-circuit of a given size doubles every two years. Semiconductor  industries follows this law since 1965. [[BR]][[BR]]"If the auto industry  advanced as rapidly as the semiconductor industry, a  Rolls Royce would  get half a million miles per gallon, and it would be  cheaper to throw  it away than to park it."[[BR]](Gordon Moore, co-founder of  Intel)[[BR]][[BR]]The  talk will demonstrate which technological masterstroke semiconductor  industry has to perform in order to fulfil Moore's law and how the  company Carl ZEISS SMT GmbH contributes to this achievement.[[BR]][[BR]]Presentation: German[[BR]][ Slides: English] [[BR]]Questions: German, English[[BR]][[BR]]'''+ Another highlight (directly after the talk):[[BR]]Planetarium show (by Felix Bosco)''' ||
     23|| 31.05.2019 || -- || Bridge day after Ascension Day ||
     24|| 07.06.2019 || || ||
     25|| 14.06.2019 || -- || Pentecost Break ||
     26|| 21.06.2019 || -- || Pentecost Break ||
     27|| '''28.06.2019[[BR]](10hrs, HdA Auditorium)''' || '''Horst Steuer''' || '''Single Molecule Localisation Microscopy and Applications''' [[BR]]  [[BR]]Single  Molecule Localisation Microscopy is a popular tool to examine the   inner workings of biological cells. Fluorescent markers can be attached   to specific sites within a cell which then appear as point shaped light   sources under a microscope similar to stars in the night sky. By   observing these molecules information about structures within a cell,   dynamics of moving particles or interactions between objects can be   deduced. [[BR]][[BR]]This talk gives a brief introduction to single molecule  localisation  microscopy. In the second part of the talk some of the  software tricks  to achieve real-time performance for the analysis of  the image data are  revealed. Finally, example applications are  presented: DNA sequencing and  molecule tracking, as well as the  development of a new type of  fluorescent markers based on nanodiamonds.[[BR]][[BR]]Presentation: German[[BR]][ Slides: English] [[BR]]Questions: German, English ||
     28|| 05.07.2019 || || ||
     29|| 12.07.2019 || -- || Student tour in technical departments (Klaus Meisenheimer) ||
     30|| 19.07.2019 || || ||
     31|| '''26.07.2019 (11hrs,  MPIA Hoersaal)''' || '''Ralf-Rainer Rohloff''' || Last talk before the Summer Break:[[BR]][[BR]]'''CFRP in Astronomy after LINC-NIRVANA'''[[BR]][[BR]]LINC-NIRVANA  was MPIA's first instrument which utilized carbon fiber reinforced  plastic (CFRP). In subsequent astronomy projects, also outside MPIA,  this interesting material is used in a growing field of applications,  which will be presented in the talk. Nevertheless, the majority of  instruments are usually far too heavy, since -still- the prime joice in  building structural components is standard steel. Hence, the potential  for future improvements in mass reduction using CFRP is enormous. In  addition, the talk will also present new ideas of how the application  range for CFRP can be further extended.[[BR]][[BR]]Presentation: German[[BR]][ Slides: German] [[BR]]Questions: German, English ||