... The HST uses an onboard model of its orbit to perform in real-time various control functions relating to spacecraft operations and observation support. ... New coefficients for the ephemeris are updated every other day, and are archived as FITS keywords for each HST observation data set. Using these coefficients,an observer can perform a variety of calibration and characterization calculations relating to the orbital position and velocity of the telescope. ...

. JOINT SESSIONS ON COSMOLOGY AND PARTICLE PHYSICS . ELECTRON CENTENARY . Acknowledgements . Instructions for electronic submission . PPEUC was hosted by the High Energy Physics and Radio Astronomy Groups in the Cavendish Laboratory . This Web Site was made possible by a generous donation from Q Associates. Last update 2 July1997

The bkg keyword is used to perform throughput and emission calculations pertaining to the background signal component of grism observations. In grism observations, a given detector pixel will receive source signal from only a small wavelength interval of the dispersed source spectrum, but it will receive background signal from the entire bandpass of the grism. ... The bkg keyword is only valid when grisms are specified as part of the obsmode. ...

The Special Astrophysical Observatory of Russian Academy of Sciences is one of the leading center of stellar magnetism study. ... Our observatory every 3-5 years holds an International Conference "Magnetic Stars" during past 30 years. ... The conference proceedings were published in book "Stellar Magnetism", Editors-in-chief Yu.V. Glagolevskij and I.I. Romanyuk (Saint Petersburg, Nauka, 1992), 270 pages. ... Conferences . History . ... Laboratory for the Stellar Magnetism Study of SAO of the RAS . ...

... Estimation of the residual Soft Proton flare contamination . ... The script can be run on any EPIC event files (MOS1, MOS2 and/or pn), to estimate the amount of *residual* Soft Proton (SP) flare contamination, i.e. it should only be used *after* attempts have been made to clean the event files for SPs using GTI filtering. ... The higher the in-FOV to out-of-FOV ratio, the more the file is contaminated by SPs: . ... File is not contaminated by SPs. ... File is slightly contaminated by SPs. ...

... at the ISSP RAS. ... MSU student Kostretsova N.B. successfully defended her thesis entitled "Investigation of Thermal and Chemial Expansivity of Ceria-Based Solid Solutions". ... V.A. Kolotygin successfully defended his PhD thesis "Perovskite-Like Oxide and Composite Anode Materials for Solid Oxide Fuel Cells: Functional Properties and Electrochemical Behavior in Contact with Gallate- and Silicate-Based Solid Electrolytes" and was awarded PhD degree in the area of Materials Science and Engineering ....

Peremennye Zvezdy ( Variable Stars ) 33 , No. ... We present our discovery a new variable star USNO-A2.0 1350-17086180 from observations at the Astrotel-Caucasus Observatory. ... The numbers of observations on each of the observing nights are presented in Table 1; the observations are attached to the html version of this paper. ... Numbers of observations . ... No. observations . ... 0.001 . ... 0.000 . ... 0.003 . ... 0.004 . ... 0.002 . ... 0.005 . ...

Multi­frequency VLBI observations of the GPS source 1934 ­ 638 A. K. Tzioumis, E. A. King, J. E. Reynolds, D. L. Jauncey R. G. Gough Australia Telescope National Facility, Australia R. A. Preston, D. W. Murphy, S. J. Tingay, D. L. Meier D. L. Jones Jet Propulsion Laboratory, Pasadena, CA, USA J. E. J. Lovell PKS 1934­638 is an archetypal GPS source, peaking at 1.4 GHz and exhibits almost no flux density variability. ... RHS: VLBI image of PKS 1934­638 at 4.8 GHz. ...

... The DFS components : for each component, a short summary of its main functionalities. The DFS Group documentation repository . PSC 19000: general/overall DFS . ... PSC 13700: DFS/FLAMES interface . ... History of all DFS deliveries to Paranal and La Silla. The DFS delivery notes (notes describing the detailled content of a delivery to the mountain, and related installation instructions). ALL DFS Release Notes (notes describing the detailled content of a specific DFS component). ...