| 33 | | || '''15.02.2019[[BR]](11Uhr, 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 || |
| 34 | | || '''22.02.2019 (11Uhr, 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]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2019S1/2019-02-22_LEXI.pdf Slides: English][[BR]]Questions: German, English || |
| | 33 | || '''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 || |
| | 34 | || '''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]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2019S1/2019-02-22_LEXI.pdf Slides: English][[BR]]Questions: German, English || |
| 40 | | || '''05.04.2019[[BR]](11Uhr, 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]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2019S1/2019-04-05_MCIFU.pdf Slides: English][[BR]]Questions: German, English || |
| | 40 | || '''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]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2019S1/2019-04-05_MCIFU.pdf Slides: English][[BR]]Questions: German, English || |
