Changes between Version 38 and Version 39 of AstroTechTalk

Timestamp:

4 Dec 2014, 11:17:15 (9 years ago)

Author:

Ralph Hofferbert

Comment:

--

AstroTechTalk

@@ -37 +37 @@
 || '''21.11.2014''' || '''Jörg-Uwe Pott''' || '''Vibration control in observational astronomy'''[[BR]][[BR]]Just like in any other high precision instrumentation field (microscopy for example), in astronomy we need to deal with vibrations, when aiming to reach for the diffraction limit of our telescopes. Telescopes are exposed to strong, variable wind load, cooling pumps, electronics fans etc, and at the same time the mirror mounts shall be lightweight, so that vibrations cannot always be avoided by stiff design and passive damping. In fact, vibrations (rather than atmospheric turbulence) are limiting the sensitivity of the highest resolution instruments we have in the optical and near-infrared range: the interferometers.[[BR]][[BR]]Joerg Uwe will present three projects related to LINC-NIRVANA at the LBT and MICADO a near-infrared high-resolutionimager for the EELT, which give an example of what can and need to be done to reach the diffraction limit, beyond the correction of the turbulent atmosphere. Together with the Institute for System Dynamics (ISYS) at the University of Stuttgart, we developed a new, powerful filter strategy to derive vibration information from accelerometer sensors without wasting star light. First tests demonstrate a 2.5-5x better performance and more robustness to changing conditions than classical control strategies, currently applied at the VLTI and LBTI.[[BR]][[BR]]Talk: German[[BR]]Slides: English[[BR]]Questions: German, English ||
 || '''28.11.2014''' || '''Oliver Krause'''[[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]][[BR]]'''[[span(style=color: #FF0000, Special!!)]][[BR]]Hans-Walter Rix''' || '''SPICA-SAFARI''' [[BR]][[BR]]Sorry, this is not a multi-vision show about sunsets, landscapes and wild animals. SPICA is the next generation infrared astronomy mission and SAFARI is an instrument on this 3.2m diameter space telescope. Currently, the European and Japanese Space Agencies study the feasibility of this mission, which plans to operate in the 20-210 um wavelength range and on an actively cooled primary mirror at a temperature of 6 Kelvin (-267 Celsius). SPICA will be about two orders of magnitude more sensitive than HERSCHEL. SAFARI  is one of the three instruments discussed for the SPICA payload, an imaging Fourier-transform spectrometer employing ultra-sensitive TES bolometers. These bolometers are superconducting at low temperatures and have a large quantum efficiency. The instrument will be built by a European consortium. Oliver Krause will give us an overview of the current status of the project and discuss its science case and the potential contributions from MPIA to the SAFARI instrument.  [[BR]][[BR]]Talk: German[[BR]]Slides: English[[BR]]Questions: German, English [[BR]][[BR]]'''Instrumentation at MPIA - How does it go on ?'''[[BR]]The directors view. ||
-|| '''05.12.2014''' || '''Aleksei Pavlov,[[BR]]Markus Feldt''' || '''The SPHERE Pipeline - the key to the planets[[BR]][[BR]]''' Recently, SPHERE the planet finder imager was commissioned at the VLT and runs its verification tests.The key component of the system is the data analysis pipeline built by MPIA.[[BR]][[BR]]Modern astronomical observations differ fundamentally from the old fashioned "taking images": The preparation starts at home. The observation sequence is compounded from given templates. I.e. the acquisition of an object, the setup of the instrument as well as the sequence of exposures. Than, the observation at the telescope is more or less fully automatic and after a sequence of exposures is finished the data analysis starts also fully automatically.[[BR]][[BR]]Markus Feldt and Aleksei Pavlov will explain to us the data flow from the idea which the astronomer has in mind, down to the final planet detection. The focus will be on the detection, which is done with help of the delivered pipeline. They will shortly explain all the details of each processing step and intermediate analysis. Don't miss this talk if you want to be sure, that the outcome of your observation is not just an artifact.[[BR]][[BR]]Talk: German[[BR]]Slides: English[[BR]]Questions: German, English ||
+|| '''05.12.2014''' || '''Aleksei Pavlov,[[BR]]Markus Feldt''' || '''The SPHERE Pipeline - the key to the planets[[BR]][[BR]]''' Recently, SPHERE the planet finder imager was commissioned at the VLT and is currently running through its verification tests.The key component of the system is the data analysis pipeline built by MPIA.[[BR]][[BR]]Modern astronomical observations differ fundamentally from the old fashioned "taking images": The preparation starts at home. The observation sequence is compounded from given templates. I.e. the acquisition of an object, the setup of the instrument as well as the sequence of exposures. Than, the observation at the telescope is more or less fully automatic and after a sequence of exposures is finished the data analysis starts also fully automatically.[[BR]][[BR]]Markus Feldt and Aleksei Pavlov will explain to us the data flow from the idea which the astronomer has in mind, down to the final planet detection. The focus will be on the detection, which is done with help of the delivered pipeline. They will shortly explain all the details of each processing step and intermediate analysis. Don't miss this talk if you want to be sure, that the outcome of your observation is not just an artifact.[[BR]][[BR]]Talk: German[[BR]]Slides: English[[BR]]Questions: German, English ||
 || '''12.12.2014''' || '''Roland Gredel''' || '''LUCI - it goes even sharper[[BR]][[BR]]'''Why became LUCIFER a girl?  When does LUCI see with full sharpness? Actually, both twin near  infrared spectrographs are already at the Large Binoculare Telescope for  a while. Nevertheless, there is still some work to do and some parts of  the instrument are still missing. Roland Gredel will update us about  the last situation of the LUCI instruments. He will present exiting  observation results of the last years and explain us how and when the  instrument will reach its full capability. Running into trouble is not  unusual building prototypes - as we do - and lessens learned from such a  project are not only informative but also entertaining.[[BR]][[BR]]Talk: German                                          [[BR]]Slides: English                              [[BR]]Questions: German, English ||
 || 19.12.2014 || -- || Christmas party ||