... astro-ph . ... Statistical Characterization of the Chandra Source Catalog . ... The first release of the Chandra Source Catalog (CSC) contains ~95,000 X-ray sources in a total area of ~0.75% of the entire sky, using data from ~3,900 separate ACIS observations of a multitude of different types of X-ray sources. ... In addition to these traditional catalog elements, for each X-ray source the CSC includes an extensive set of file-based data products that can be manipulated interactively. ...

... Equinox of object coordinates BJ = 18.87 / bJ magnitude UMBJ = -0.69 / u - bJ colour BJMR = 0.22 / bJ - r colour NOBS = 1 / Number of 2dF observations available IS_ BEST = 'TRUE ' / TRUE if this file contains the best 2dF observa DATEBEST= '24/09/00' / Date of best 2dF observation (DD/MM/YY) ID_ BEST = 'QSO ' / ID from best 2dF observation QUALBEST= 11 / Data quality flag from best 2dF observation Z_ ...

SLR Observations at the Quasar Network Stations I.Gayazov, V.Mitryaev, S.Smolentsev, I.Rahimov, A.Diyakov, V.Shpilevski, V.Pshenkin, Ya.Rets Institute of Applied Astronomy, Saint Petersburg, Russia WPLTN-2012 September 24 - 28, 2012 Saint Petersburg SLR systems installation at the Quasar observatories Observatory Zelenchukskaya Badary Stage Dome building System installation Testing Dome building System installation Testing Dome building ...

... 15.03.2001 . ... March 15 2001 09:00 (Moscow time) . The operation with OC "Mir" scheduled for March 14 is complete. ... The onboard systems perform nominal, the battery generate enough electric power, the thermal condition is normal. Getting the OC"Mir" ready for dynamic operations the fuel containers pressure integrity was checked, the valves of the fuel supply pipes and the 1st collector oxidizer in the core block integrated propulsion system were opened. ...

This directory contains Calgary Neutron Monitor Data at five minute resolution. Each file is a gzipped tar archive that contains files of uncorrected count rates and barometric pressures at five minute intervals for one year. A file named snm.calg.fmi.YYYY.tgz is an archive that holds five minute data for the year YYYY. ... So a file named cal01030.fmi contains five minute uncorrected data for year 2001 day 30 (which is Jan 30, 2001). ... A text file named note.txt is also usually present. ...

EVIDENCE FOR AGE DELAY BETWEEN THE FORMATION OF THE OLD HALO AND THE THICK DISK. ... The metallicity function of globular clusters of thick disk and old halo is shown on Fig.1Ю There are a two approximately the same normal distribution with well-defined gap between them with width [Fe/H] 0.2 dex. ... Metallicity function (left panel), and age distribution (right panel) for the old halo and thick disk globular clusters. ... Plots of V S against cos for the thick disk and the old halo samples. ...

... Deriving the sine or cosine of an arbitrary angle takes a bit more math than is covered here. ... Note first of all that a right-angled triangle contains two angles. ... Because the side opposite to A is the one adjacent to (90њ- A), it follows that the sine of one angle is the cosine of the other, and vice versa: . ... Consider the triangle PQR (drawing) with all three angles equal to 60њ. ... If we want the angle A to grow in equal steps of 15 o , we still need the sine and cosine of 15њ and 75њ. ...

Russian SHAREABLE DATA CENTER Institute of Solar-Terrestial Physics SB RAS . ... The algorithm and appropriate program for decametric radiosignal propagation conditions prediction for paths from 500 to 9000 km have been developed at ISTP SB on the basis of normal wave method (AltyntsevaB.I,Iliyin N.V., Kurkin V.I. and others //Decameters channel simulation on the base of normal wave method . ... Solar activity indices are chosen automatically from the prediction date from the database . ...

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adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

... August, 31st -- the command on switching on of the second onboard hydrogen maser has been given. ... At the same day (August 31st) for the functioning checking, all the scientific devices and units of the focal container have been switched on: the shaper of heterodyne micro-wave frequencies, the micro-wave signals selector, the block of pulse calibration, the control and analysis block (BUAS-F), four termostats of receivers on 18 and 92 cm. ... There are no remarks to the devices operation. ...

SINGULAR POINTS IN THE SOLAR CHROMOSPHERE . ... In the structure of the solar chromosphere, containing information on the configuration of the magnetic field, we have found and identified all the main types of the singular points ( see Fig. 1 ), which are known as inherent features of the 2-D vector field. ... The main types of the singular points are the node, the focus, the center, and the saddle. ... Singular point of the focus type in the solar chromosphere. ...

... However, our studies show that Prosilica EC650 has very good p erformance to use as DIMM image detector. ... The sub-directories /opt/dimm/data/out for the output data file, /opt/dimm/data/log for the output log file yymmdd-dimm.log and /opt/dimm/etc for the configuration file must b e created. ... Pictures mode The Pictures mode provides grabbing of the star b ox images and storing their sequence as one output file "b oxrecord.fits" in /opt/dimm/data/images/ sub directory. ...

... The VSOP Survey Continuum Source List . The radio sample for the VSOP continuum survey was defined to include all extragalactic radio sources with: . a total flux density at 5 GHz, S>=1.0 Jy . ... The sample also included all sources in the sky with a 5 GHz flux density S>5 Jy, regardless of spectral index and galactic latitude. ... The source would then be included in the VSOP sample (three of the sources were found with a flux density above 1 Jy and added to the sample). ...

... Bad Astronomy . ... I think I will break from my usual format of Bad Astronomy/ Good Astronomy by saying that the way we define seasons currently is not strictly bad, but I feel (in my opinion!) that it could be better. The definition of when the seasons begin is at the moment of solstice or equinox; that is, winter (in the north) starts on December 22 nd and summer starts on June 22 nd . ... Now imagine breaking up the Sun's 46 degree up-and-down yearly swing into 1 day intervals. ...

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... des actualit–їs . ... Accueil Atterrissage de Curiosity sur Mars en direct lundi matin . ... Apr–Rs 8 mois de voyage –Љ travers l'espace, Curiosity arrive enfin sur Mars ce lundi 6 ao–?t 2012. ... Les Toulousains ont quant –Љ eux le loisir de se rendre –Љ la Cit–ї de l'Espace pour suivre l'atterrissage avec les commentaires des sp–їcialistes fran–?ais de la mission. ... Curiosity est le plus gros rover jamais envoy–ї sur Mars . ...

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... Average effective wavelengths and band widths for various sp ectra Lyrae spectrum f flat k е 1014 Hz 5386 ± 18 4.66 ± 0.04 5714 ± 12 4.1 6234.5 ± 0.5 1.03 5372 ± 18 4.69 ± 0.04 eff 2 Optical Filter ID 1 2 3 4 a Fo c -6 10 erg/cm2 s 12.55 ± 0.10 11.04 ± 0.01 2.77 ± 0.004 12.63 ± 0.10 fo d 6 10 photons/cm2 s 3.40 ± 0.02 3.18 ± 0.004 0.87 ± 0.002 3.42 ± 0.02 Power-law eff f 2 е 5746 ± 317 6197 ± 253 6305 ± 31 5736 ± 316 spectra pl k 1014 Hz 3.70 ± 0.26 3.14 ± 0.16 0.88 ± 0.01 3.70 ± 0.27 Table 1. ...

... 1.7 GSC 084 Pulkovo Obs., 0.33 15 x 15' 1.0" 7 34 0.179 0.307 Normal Asgr. 3.0 UCAC 118 Slovakia, 0.57 14 x 10' 1.7" 3 12 0.090 0.145 Modra 3.3 USNO 127 Germany, 0.19 30 x 20' 2.4" 3 15 0.151 0.087 Bornheim 0.8 GSC 168 34 200 0.282 0.315 291 USA,Kitt Peak, 1.8 390 x 30' 1.0" 1 5 0.143 0.144 Spacewatch II 4.7 USNO 300 Japan, 0.5 78 x 78' 2.3" 7 36 0.420 0.447 Bisei Center 1.3 ACT 461 Hungary, JATE 0.60 28 x 19' 1.1" 6 22 0.124 0.153 Asteroid Surv. ... Polynesia 1.0 UCAC F85 Tiki Obs., ...

The nasa.gov site requires that JavaScripts be enabled in your browser. ... Contact NASA . ... The following are astronauts who are employed at NASA. Astronaut assignments and category definitions (e.g., "active" astronauts, "management" astronauts) are contained in a separate Flight Operations Directorate (FOD) policy letter. Astronaut . ... Acaba, Joseph M. 2004 . ... Aunon, Serena M. 2009 . ... Barratt, Michael R. 2000 . ... Burbank, Daniel C. 1996 . ... Cassada, Josh A. 2013 . ... 1998 . ...