Masers and Galactic Structure: µas Astrometry with the VLBA Mark Reid Harvard-Smithsonian CfA Andreas Brunthaler & Karl Menten Germany Xu Ye & Zheng Xing-Wu China Lincoln Greenhill CfA Luca Moscadelli Italy Talk Outline · · Locating Sgr A*(IR) with masers Proper motion of Sgr A*: Sgr A* is very massive measured value for 0/R0 Star Formation Parallaxes and Proper Motions: Locations of Spiral Arms Rotation Curve (dark matter) Spiral Density Wave Theory · Where is the Galactic Center? ... Plane! ...

... Drive the Reflector in elevation to the zenith position. ... Elevation | ... 7 SUMMARY OF REFLECTOR SURFACE ACCURACY MEASUREMENT Test Date: Start Time: End Time: Weather Conditions during Test: Comments: By- _________________ Date- _______________ SUB-REFLECTOR AND FEED POSITION AND ALIGNMENT MEASUREMENT 1 2 OVERVIEW This test is to measure and record the positions of the sub- reflector and feed horn using photogrammetry. ... 3 4 SUB-REFLECTOR/FEED POSITION AND ALIGNMENT MEASUREMENT TEST PROCEDURE 1...

... Slit-plate Deflection . ... One end of the approximately 2m long fiber is inserted into a hole in an aluminum plug-plate, and the other end is fed into and supported by a slit-plate. ... Since the fibers are to be calibrated from a fixed position, it will be necessary to know how much the slit-plate deflects under its own weight due to gravity, as well as how much it deflects under the weight of the fibers and harnesses. The deflection of two plates of thickness 3.175 and 3.607mm was tested. ...

Swift Launches . ... Credit Copyright: NASA Explanation: Where do gamma ray bursts occur? To help find out, NASA launched the Swift satellite on Saturday, as pictured above . What Swift is designed to do better than any previous satellite is to quickly locate these enigmatic explosions in both sky position and distance. Once a gamma ray burst (GRB) is located, Swift itself will rotate to face it head-on and determine its distance directly. ... NASA Official: Jay Norris. ...

The sections <Directory> , <Location> and <Files> can contain directives which only apply to specified directories, URLs or files respectively. Also htaccess files can be used inside a directory to apply directives to that directory. ... The order of merging is: . ... If multiple <Directory> sections apply to the same directory they are processed in the configuration file order. ... Using the options in question is only possible inside a <Directory> section (or a .htaccess file). ...

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

Russian version of HP . ... StarCalc is the fastest professional astronomy planetarium & star mapping program for Windows 9x/ME/NT/2000/XP (StarCalc version for PocketPC computers you can found here ). ... Extensibility : This program is based on common "Plugin StarCalc interface to catalogs and object groups", which allows program to add new modules as Plugins. ... Welcome to the Pocket StarCalc Home Page: . ... Some bugfixes in eclipses" and line" plugins - see the new versions in downloads page. ...

... Tonight's Sky . ... Mars . ... Home . ... Observing . ... Mars orbiter repositioned to phone home Mars landing . ... Two other Mars orbiters, NASAт??s Mars Reconnaissance Orbiter and the European Space Agencyт??s Mars Express, also will be in position to receive radio transmissions from MSL during its descent. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter....

... 1.Magnetic and magneto-elastic properties of heavy rare earth metals. ... High magnetic fields of 100 kOe and more were necessary to saturate the magnetization of havy rare earth metals. ... It was shown that the effective exchange field theory is sufficient for the description of the magnetic order in heavy rare earth metals and their compounds. ... The duality of the state of the magnetic carriers in the traditional 3d-magnetic materials. ... LHPP ISSP RAS © 2004 All rights reserved ...

Next: A Region mask for Up: To produce a region Previous: Select a circle around . select cursor and box . The three mouse buttons have been redefined as: . LEFT - moves the center of the box to the position of the arrow point. MIDDLE - sizes the box. ... Release the button to fix the size of the box. save the results by typing `s' while the mouse is in the display window. select region and write , to write the saved regions into a file for later use (as above). rsdc@cfa.harvard.edu . ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Moon . ... Space Flight . ... Science Fiction . UFOs and Fringe Science . Monthly Sky Notes . ... NASA's Cassini spacecraft obtained this image of Saturn's moon Helene on June 18, 2011. Image credit: NASA/JPL-Caltech/Space Science Institute) . ... Your email address will not be published. ... Email * . ... Here you will find the latest news and v