. " 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."

... HST Overview . ... Target Location in Aperture / 32-1 . ... Calibration Accuracies / 32-5 . ... Below we first address important factors affecting various calibration accuracies and the data quality (e.g., target centering, mechanism repeatabilities, and image location). Then we discuss the limitations associated with each type of FOS calibration and their associated impact on FOS data quality, providing information to help you estimate the accuracy in your particular science observations. ...

Data files used in analysis (supported by the IAA except other stated) . ... Database name-Experiment code cross-reference table (based on the IVS master files, updated with every new session) . ... Observations Statistics (updated near-daily) . ... Starting from June 2004 IAA AC regularly submits NGS cards to the IVS with a delay of several hours after appearing of the database in the IVS archive. ... Session tropospheric paremeters are regularly submitted to the IVS troposphere combining center ...

... 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 . ...

... Observing . ... Solar Observing . ... April 3 (SUN) - Solar Observing, Central Park , Manhattan . ... APRIL'S SKY . ... Lecture Series at the American Museum of Natural History The Amateur Astronomers Association is proud to present an astronomy lecture series from October through May each year for our members and the .. ... The€аAmateur Astronomers Association of New York€аwas organized in 1927 to promote the study of Astronomy, emphasizing its cultural and inspirational value. ...

... 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. ...

Eric Feigelson (Penn State University) gave a series of lectures and tutorials on statistical methods for astronomical research on Wednesday Jan 29 and Friday Jan 31, 2014. ... The scratch space document that registrants used to communicate before, during, and after the tutorial, is saved as a pdf document . ... Presentation slides [.pdf] (access CfA only) . Video (until 1:18:18) [@YouTube] (access to registrants only) . ... Video (begins 1:14:40 in) [@YouTube] (access to registrants only) . ...

Next: NICMOS/HST H-band (F160W) Images Up: NICMOS Science Previous: HST NICMOS Observations of . ... Observations of P . ... The NICMOS team has devised a comprehensive program of observations of the Galactic Center. ... Data in hand give a first look at variability and a detailed look at the search for the tip of the main sequence will be discussed where NICMOS has demonstrated adequate sensitivity and photometric precision to identify likely O8-B1 stars at the Galactic Center. ...

... PUL VLBI Analysis Center . ... Pulkovo EOP and Reference Systems Analysis Center (PERSAC) is located at the Pulkovo Observatory . ... Processing of VLBI , GPS, and optical observations aimed at analysis of the Earth rotation, station displacement, and celestial reference system. ... Celestial Pole Offset (CPO) and Free Core Nutation (FCN) . Four daily updated CPO and FCN series (models) are provided. ... File fcn1.dat contains the ZM1 FCN model with variable amplitude and phase. ...

. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .

... Subject and Problems of Stellar Astronomy. ... Plane of Galaxy, Methods of Its Location Determination. ... Stars Distances. ... Other Methods of Stars Distances Determination. ... Tangential Velocities, Their Determination by Self-Motions. ... Determination of Solar Apex and Spatial Velocity by Radial and Spatial Velocities of Stars. ... Features of Orientation and Parameters of Peculiar Stellar Velocities Ellipsoid. ... General and Selective Light Absorption in Galaxy. ... Darc Clouds in Galaxy. ...

... Observations . ... Natural Satellites Data Center. ... Nomenclature of satellites | ... Inner satellites of Jupiter . ... Inner satellites . Mutual events of the Galileans . ... Inner satellites of Saturn . Main satellites of Saturn . ... Mutual events of the main satellites . Inner satellites of Uranus . Main satellites of Uranus . ... Mutual events of the Uranian satellites . Inner satellites of Neptune . Main satellites of Neptune . Outer satellites of Neptune . ...

. My astronomical research interests center on galaxy structure and evolution. Current topics include: . Polar-ring and interacting galaxies (see also new catalogue ) . Galaxy warps: statistics, properties and origin . Spiral galaxies at z~1: radial and vertical structure of stellar disks, statistics of interactions . Surface photometry and kinematics, dynamical modeling . Observational cosmology . Joomla Counter since Sep 1997

... Table of Contents - Index - PS reprint - PDF reprint . ... All RXTE telemetry will be archived in a hierarchical database consisting entirely of FITS Binary Tables. We describe an interactive tool, the XTE Data Finder (XDF). ... Our basic design contains a three level hierarchy: Master Index, Subsystem Index, and Data Table. ... The Master Index acts as an observation catalog with references to Subsystem Indices, while the latter contain configuration information and references to the Data Tables. ...

... Research . ... Ljubljana Univ., ... Zagreb Univ., ... Asiago Observatory, Italy . ... ESO, Germany . ... I am an associate astronomer at the European Southern Observatory (ESO). I divide my work between the scientific research and management of the ESO's User Support Department (USD), which is in charge of providing support to observers who use ESO's Paranal Observatory facilities . ... A final standard disclaimer: the opinions expressed in this site do not reflect in any way the opinions of ESO. ...

... The spectrograph SP-124 at the Nasmyth-1 focus of the 6 m telescope with UAGS camera and Photometrix CCD PM1024 ( m pixel size) was used for the observations. ... Gratings with 300 and 600 grooves/mm were used, resulting in a spectral resolution of approximately 12 and 6 ? ... A He-Ne-Ar lamp was used for wavelength calibration. ... April 6.914 . ... The reduction of the original two-dimensional CCD data included the standard steps such as bias and dark subtraction, flat-fielding, cosmic-ray removal...

... 10.09.2001 . ... CXO , NASA Explanation: Why would the center of our Galaxy flicker? Many astronomers believe the only credible answer involves a black hole . ... This short flicker therefore provides additional evidence that a black hole does indeed reside at our Galaxy's center . ... Publications with keywords: black hole - Galactic Center - Sgr A . Publications with words: black hole - Galactic Center - Sgr A . ... Journey to the Center of the Galaxy . ... Too Close to a Black Hole . ...

... 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. ...