Changes between Version 307 and Version 308 of AstroTechTalk
- Timestamp:
- 23 Oct 2017, 09:42:22 (7 years ago)
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AstroTechTalk
v307 v308 31 31 || 20.10.2017 (10hrs, HdA) || || || 32 32 || '''27.10.2017[[BR]](10hrs, HdA)''' || '''Nicolas Baroan (NIT)''' || '''Novel Scientific high dynamic range SWIR camera: technology, capabilities and application in astronomy'''[[BR]][[BR]]High Dynamic Range is being widely adopted in different markets, like automotive, Industrial machine vision, defense…[[BR]][[BR]]Scientific cameras, usually driven by low light performances and extended Wavelength spectral response, is now considered also as a potential “consumer” of these emerging extended dynamic range devices.[[BR]][[BR]]Developed with its patented High Dynamic Range Pixel structure and with the LPA expertise in optronics ( i.e. : Laboratoire Pierre Aigrain – Ecole Nationale Supérieure ), NIT and LPA will present the first scientific Short Wave Infrared High dynamic Range camera.[[BR]][[BR]]The deep cooled camera performances and features will be illustrated through an interesting astronomy application case made at the “Pic du Midy” Observatory at the top of the French Pyrenees.[[BR]][[BR]]A comparison with a state of the art cooled !InGaAs camera, in similar conditions, will briefly be described.[[BR]][[BR]]Presentation: English[[BR]]Slides: English[[BR]]Questions: English || 33 || 03.11.2017[[BR]](10hrs, HdA) || Wolfgang Gaessler || 4MOST Update||33 || '''03.11.2017[[BR]](10hrs, HdA)''' || '''Wolfgang Gaessler''' || '''4MOST - An Update'''[[BR]][[BR]]The 4MOST project upgrades the 4m VISTA telescope on Paranal to a spectroscopic facility. Two low resolution spectrographs (R ~ 5000) and one high resolution spectrograph (R ~ 20000) are fed with light from 2400 fibers. [[BR]][[BR]]In the first 10 years of operation, 4MOST will serve 11 surveys of the responsible consortium. In addition, whole community surveys are planned to observe nearly everything on sky (except for exoplanets): individual stars in the Milky Way galaxy and in the Magellanic Clouds, AGN, supernovae and their hosts, quasars, LRGs, ELGs, and galaxy clusters. [[BR]][[BR]]Wolfgang Gaessler will give a project update and will explain interesting technical features in more detail.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2017S2/2017-11-03_4MOSTUpdate.pdf Slides: English][[BR]]Questions: German, English || 34 34 || 10.11.2017[[BR]](10hrs, HdA) || -- || No room available || 35 35 || '''17.11.2017[[BR]](10hrs, HdA)''' || '''Hans J. Kaercher (MT Mechatronics GmbH)''' || '''Thinking in Forces [[BR]](as a Tool for designing Telescope Structures)'''[[BR]][[BR]]What is a force? One can start reflecting about it and philosophers have written whole books about this question. Ludwig Buechner, a „middle-class materialist“ of the 19th century wrote in his book „Kraft und Stoff“: „Kraft kann nichts weiter sein als eine Eigenschaft der Materie“, or „Kräfte lassen sich nicht mitteilen, sondern nur wecken“, and in this sense he is obviously with Isaac Newton, who is the originator of "thinking in forces" following his famous observation of the falling apple. Much later this led to the special engineering branch "structural mechanics", which was originally applied to bridge and building construction, lateron even in the more sophisticated branch of aerospace engineering.[[BR]][[BR]]„Thinking in forces“ in the form of "graphical structural analysis" became a branch of engineering in the middle of the 19th century. This enables to think in both the "physical space" and the "force space", i.e. besides a design drawing also a force diagram is required. This is similar to projective geometry, where also dual spaces exist. Hans Kaercher will explain this approach in three examples:[[BR]]1) designing reflectors for radio telescopes;[[BR]]2) designing primary mirror supports for large optical telescopes;[[BR]]3) designing tracking mounts for large optical elements.[[BR]]These examples will be discussed in the framework of currently running projects, like e.g. the 110m radio telescope QTT and the extremely large optical telescope GMT.[[BR]][[BR]]Presentation: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/AlteVortraege2017S2/2017-11-17_DenkenInKraeften.pdf Slides: English][[BR]]Questions: German, English ||
