. " The Arecibo Observatory is sponsored by the National Science Foundation. Any opinions, findings and conclusions or recommendations . expressed in this publication are those of the author(s) and do not necessarily reflect the views of the National Science Foundation."

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. January 28, 1999 . The Galactic Center - A Radio Mystery . ... Explanation: Tuning in to the center of our Milky Way galaxy, radio astronomers explore a complex, mysterious place. A premier high resolution view, this startlingly beautiful picture covers a 4x4 degree region around the galactic center. ... About APOD > . ...

Astronomy Picture of the Day . The Galactic Center A Radio Mystery . ... Credit Copyright: N. E. Kassim, D. S. Briggs, T. J. W. Lazio , T. N. LaRosa, J. Imamura ( NRL /RSD) Explanation: Tuning in to the center of our Milky Way galaxy, radio astronomers explore a complex, mysterious place. ... NASA Web Site Statements, Warnings, and Disclaimers . ... Publications with keywords: Galactic Center - radio emission - Milky Way . Publications with words: Galactic Center - radio emission - Milky Way . ...

... January 21, 1997 . Journey to the Center of the Galaxy . ... What wonders lie at the center of our Galaxy ? Astronomers now know of some of the bizarre objects which exist there, like vast dust clouds , bright young stars , swirling rings of gas , and possibly even a large black hole . ... The center itself appears as a bright spot near the middle of the roughly 1x3 degree field of view, the plane of the Galaxy is vertical, and the north galactic pole is towards the right. ... About APOD > . ...

... The calibration of astrophysical spectra in wavelength based on calibration lamp data suffers from different kinds of uncertainties. Besides inaccuracies in the observational phase, common data reduction practice adds ``pixelation'' errors, due to the fact that the centering method does not use the correct PSF. These model mismatch errors depend, for a given feature, on the sub-pixel location of the line center (David & Verschueren, private communication). ...

... НЕПРЕРЫВНОГО МАТЕМАТИЧЕСКОГО ОБРАЗОВАНИЯ . ... Кружок ?Олимпиады и математика? ... Московская математическая олимпиада . Заочный математический конкурс . ... Устные математические олимпиады . Олимпиады по программированию . Математический праздник . Математические регаты . ... Математические бои . Олимпиада по геометрии им. И.Ф.Шарыгина . ... Программа ?Math in Moscow? Научные конкурсы . Творческий конкурс . ... График олимпиад . ... XXVII Математический праздник . ...

... We construct a composite quasar spectrum from 149 HST FOS spectra of 80 quasars with mean redshift . ... The continuum longward of 1000? can be modeled as a power law with . ... The break in the power--law index is a feature expected in Comptonized accretion--disk spectra. ... The spectral features in the sub--Ly region of AGN spectra provide critical insights into the physical processes around the central engine, and they become accessible to IUE and HST at intermediate redshift. ...

home resources . SEARCH ASP SITE: Match ALL words Match ANY word . ... Books . Favorite Links . ASP Educational Resources . Your resource for unique education materials, ASP favorites, technical publications, and more.. ... Your purchases help support the education programs of the ASP. We feature our favorite new Astronomy books with short descriptions. Looking for archived Books of Note? ... Feature Book . ... Feature Link . ... Publications | ... education | resources | ...

... The DiFX correlator has a capability to process many phase centers within a primary beam in one pass. ... SCHED supports the multiple phase center mode by providing the details of all the desired phase centers to use for a given pointing center in the output .v2d file, which is used in correlator setup. ... When using this capability, the user should specify the size of the FFTs to do on each baseband channel before spliting the data for each phase center. ...

... Институт прикладной математики им. М.В.Келдыша . БАЛЛИСТИЧЕСКИЙ ЦЕНТР . О Центре . ... Баллистический Центр Института прикладной математики им. М.В.Келдыша РАН . Баллистический центр (БЦ) ИПМ им. М.В. Келдыша создан по предложению С.П. Королева и М.В. Келдыша в 1965 году. На него были возложены работы по баллистико-навигационному обеспечению (БНО) управления полетом пилотируемых кораблей и автоматических космических аппаратов научного и народно-хозяйственного назначения. ...

... CfA Home . HCO Home . SAO Home . ... Welcome to CfA . CfA History . ... Laboratory Astrophysics . Extreme Astrophysics . ... 617) 495-7210 . ... 617) 495-7044 . ... 617) 495-7265 . ... HEA Research . ... HEA Home Page . CFA/HEA Home Page . ... High Energy Astrophysics Division (HEAD) . Chandra X-ray Center . ... Chandra Cluster Cosmology Project . Chandra Multiwavelength Project (ChaMP) . ... Chandra-Planck Clusters Project . ... CfA Virtual Observatory Project . ...

... The angular resolution of the catalog is 2.6' x 4.8' (at Dec=45.5d). ... 1985, Astronomy and Astrophysics Supplement Series, 59, 255. 1 name Name of source (char9, example : '0003+408B') 2 ra_rad radians Right ascension of source in radians (B1950) ( real , example : 0.016) 3 dec_rad radians Declination of source in radians (B1950) ( real , example : 0.712) 4 ra_deg degrees Right ascension of source in degrees (B1950) ( real , example : 0.935) 5 dec_deg degrees Declination of ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... space flight . ... space physics . ... Sky this Week . Observing Podcasts . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . Springtime observing for small telescopes . ... Seasonal Observing . ... Observing Basics . ... Gift Center . ... Marshall Space Flight Center, Huntsville, Alabama . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

. grid ( 80 , 25 ) failure_color ( red,white ) diagram_font ( "Arial" , 20 ) dialog_font ( "Arial" , 12 ) dialog "ListOfInstruments" ( "Посуда и инструменты" ,white,blue,default, centered,centered,default ) vbox ( center ) listbox [ 'Sort' ] ( instruments, 3000 , 30 , 9 , [] , [] ) button ( close, "&Close" ) end_of_vbox end_of_dialog dialog "ChooseFruits" ( "Выбрать ягоды и фрукты" ,white,blue,default, centered,centered,default ) vbox ( center ) listbox ( 1000 ,value_o1, 30 , 4 , [ "Черная рябина" , "Яблоки

... The Irkutsk IS radar has the opportinuty to measure several ionospheric plasma parameters such as electron density N e , electron and ion temperatures T e , T i , and drift plasma velocity along the sounding direction. ... To the 1999-2001 data we have added the E-layer ionosphere model to electron concentration profile, which has been constructed by integral concentration from the ionosphere beginning from 160 km obtained from experiment. ... Capabilities and samples | ...

CCD output for full detector simulation in JAS Nick Sinev , University of Oregon April 22, 2004 Nick Sinev , LCWS2004 , Paris , 19-23 April , 2004 1 Outline · · · · · · · · · Brief overview of Oregon R D in CCD vertex detector Justification for need of full CCD output simulation What CCD features have been simulated CCD signal processing ... April 22, 2004 Nick Sinev, LCWS2004, Paris, 19-23 April, 2004 16 ...

... 237S (SIMBAD/NED BibCode) ================================================================================ Keywords: Sun: UV radiation - atmospheric effects - Sun: atmosphere - lines: identification Description: An ultraviolet atlas of the solar spectrum with a spectral resolution of 15mA in the region 1948-2000A is presented. ... The wavelength atlas with a list of about 550 lines has been synthesized from data at center of the Sun ({mu}=1) and at {mu}=0.89, smoothed out over an area of 30 arcsec. ...

The AstroGuide . ... AstroGuide | ... AstroGuide Listing . ... See many more Astronomy Listings by: Category or Alphabet . The Charles E. Daniel Observatory features a very historic 23" refractor telescope, the eighth largest of its kind in the nation. ... Last Update October 26, 2004 . Listed Since October 26, 2004 . ... 402 Roper Mountain Road . ... Web Site . http://www.ropermountain.org/Observatory/observatory.shtml . ... Web . ... dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...