Changes between Version 97 and Version 98 of AstroTechTalk

Timestamp:

7 May 2015, 11:51:12 (9 years ago)

Author:

Ralph Hofferbert

Comment:

--

AstroTechTalk

@@ -42 +42 @@
 || '''24.04.2015''' || '''Kai Weidlich (Airbus DS Optronics)''' || '''BELA - ESA's first Laser Altimeter for Planetary Research[[BR]][[BR]]'''[[BR]]The space-qualified design of a miniaturized laser for the !BepiColombo laser altimeter (BELA) will be presented. It will form an integral part of a larger geodesy and geophysics package on board the Mercury Planetary Orbiter (MPO) of the !BepiColombo mission.[[BR]][[BR]]The laser facilitates pulsed operation at 10 Hz repetition rate and at 1064 nm wavelength. The laser design consists of a pair of diode-laser pumped, actively q-switched !Nd:YAG rod oscillators encapsulated into dry synthetic air. The system delivers at least 300 million laser pulses with 50 mJ energy and 5 ns duration. It will be launched in 2016 and, after a six-years cruise, will start recording topographic data from orbital altitudes between 400 km and 1500 km above Mercury's surface. Critical qualification issues of the BELA Laser comprise reliable operation of laser diodes, accurate  transmitter-to-receiver alignment, stable pulse energy and stable beam divergence over 300 million laser pulses.[[BR]][[BR]]Starting design work at Carl Zeiss Optronics Oberkochen in 2008 the BELA Laser project was completed at Airbus DS Optronics with flight spare delivery in 2014.[[BR]][[BR]]Talk: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/WikiStart/2015-04-24_BELA1.pdf Slides: English Part1] [https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/WikiStart/2015-04-24_BELA2.pdf Part2][[BR]]Questions: German, English ||
 || 01.05.2015 || -- || No talk (public holiday) ||
-|| 08.05.2015[[BR]]'''[[span(style=color: #FF0000, Seminarraum!!)]]''' || '''Tom Herbst [[BR]]Patrick Fopp[[BR]]David Neb''' || '''MPIA all-sky camera'''[[BR]][[BR]]Observing time is very expensive, and state of the art large telescopes are operated out of a warm, closed, and isolated control room. What happens outside is often not visible to the observer until the (very expensive) data are reduced. Cloud cover and transparency variations can spoil an astronomical measurement and make optimizing telescope usage difficult. [[BR]][[BR]]An all sky camera is the solution, giving the observer information on what is happening outside, so that he or she can react to sudden changes in weather and other conditions. Patrick Fopp, David Neb, and Tom Herbst describe the MPIA All-Sky Camera, which is currently being tested on the roof of the MPIA.[[BR]][[BR]]Talk: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/WikiStart/2015-05-08_AllSkyCamera.pdf Slides: English][[BR]]Questions: German, English ||
+|| 08.05.2015[[BR]]'''[[span(style=color: #FF0000, Seminarraum!!)]]''' || '''Tom Herbst [[BR]]Patrick Fopp[[BR]]David Neb''' || '''The MPIA all-sky camera'''[[BR]][[BR]]Observing time is very expensive, and state of the art large telescopes are operated out of a warm, closed, and isolated control room. What happens outside is often not visible to the observer until the (very expensive) data are reduced. Cloud cover and transparency variations can spoil an astronomical measurement and make optimizing telescope usage difficult. [[BR]][[BR]]An all sky camera is the solution, giving the observer information on what is happening outside, so that he or she can react to sudden changes in weather and other conditions. Patrick Fopp, David Neb, and Tom Herbst describe the MPIA All-Sky Camera, which is currently being tested on the roof of the MPIA.[[BR]][[BR]]Talk: German[[BR]][https://svn.mpia.de/trac/gulli/att/raw-attachment/wiki/WikiStart/2015-05-08_AllSkyCamera.pdf Slides: English][[BR]]Questions: German, English ||
 || 15.05.2015 || M.Bergemann,[[BR]]W. Gaessler || 4MOST ||
 || 22.05.2015 || Torsten Boeker [[BR]](ESA, STScI Baltimore) || JWST/NIRSpec ||