... We describe our image restoration efforts which use an analytical model of the point spread function (PSF) of the Hubble Space Telescope Faint Object Camera (FOC). ... The difficulties involved in modeling the PSF and validating our approach are illustrated using actual FOC and simulated data which have been processed on a massively parallel computer. Keywords: parallel architectures, image restoration, HST, FOC, Zernike Polynomials . ... Approach for Calculating an Analytical PSF . ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

... We have calculated the binary coalescence rate with time using the ``Scenario Machine'' code, which allows us to simulate evolution of large ensembles of binary stars in an artificial galaxy using a Monte Carlo method (see Lipunov 1992, Lipunov et al 1994, 1995 and references therein). ... The source evolution in a galaxy with given star formation rate is thus calculated as , where is the redshift at the turn-on of star formation, which is the second important parameter of the model. ...

OOF Software Its Structure and How to Extend It B. Nikolic MRAO, Cavendish Laborator y/Kavli Institute for Cosmplogy University of Cambridge September 2010 B. Nikolic ( University of Cambridge ) OOF Holography September 2010 1 / 18 Software structure Outline 1 Software structure Extending OOF software for application at a new ... B. Nikolic (University of Cambridge) OOF Holography dFNu .. ...

Next: Identification and Analysis of Binary Star Systems using Probability Theory . ... We present a computing code for modelling energy flux distributions, photometric indices and spectral line profiles of (non-)radially pulsating Main-Sequence stars. ... In the case of slowly rotating stars one can use the zero-rotation approximation to describe stellar pulsations. Such a model was used already by Cugier, Dziembowski & Pamyatnykh (1994) to study nonadiabatic observables of Cephei stars. ...

... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... Each such choice is known as a frame of reference . Some possible frames are -- the interior of the airliner, . ...

The radio power formula (see Hogg D.W. ) is . where luminosity (bolometric) distance is . Deceleration parameter is for Lambda = 0. The fitting curve is used for the radio power calculation. The Hubble constant , the deceleration parameter , the redshift of radio source , the emission comoving frequency , and the observed flux density can be choosed as parameters .

... Calculating Kinematical Parameters and the Velocity Ellipsoid for O-B5 and M Giants . ... A disadvantage of separate calculations for the kinematical parameters and the velocity ellipsoid arises from both calculations including the solar velocity. ... SDP also possesses the property that the ellipsoid calculated is unique and represents a global minimum of the adjustment criterion when that criterion is either the robust L1 criterion or the difference of squares (DOS) criterion. ...

... 1 erg = 0.1 microjoules . 1 Jansky = 10**-26 watts per metre square per hertz . 1 Angstrom = 0.1 nanometres . ... 1 Astronomical unit = 1.4960 times 10**11 m . ... Mass of Sun = 1.989 times 10**30 kg . ... Mass of the Earth = 5.976 times 10**24 kg . Mass of Jupiter = 318 times mass of Earth . Solar constant = 1.37 kW per metre . c= 3 times 10**8 metres per second . ... Mass of Proton = 1836.1 times mass of electron . ... Stefan Boltzmann constant = 5.67 times 10**-8 W m**-2 K**-4 . ...

... Meta Index / Home Page / Description / Specifying source region shapes . When radiusstyle =`contour', the task calculates the source region shape as an elliptical locus which approximates the contour of the PSF at a given flux value. ... Clearly, in order to calculate the shape of such a flux contour, it is necessary firstly to normalize the PSF to the source brightness and secondly to determine the flux level (in `brightness' units per pixel) at which to find the contour. ...

... The Theoretcial Astrophysics subroutine library provides constants and functions commonly used in astrophysical modelling. It began in 1992 as a joint project between CCP7 and Starlink, initiated by Simon Jeffery and Paul Rees. ... SUBROUTINE TAP_ESYMB ( IZ, SYMBOL, STATUS ) . ... SUBROUTINE TAP_ENAME ( IZ, NAME, STATUS ) . ... SUBROUTINE TAP_ABINI ( TAP_ABUND, STATUS ) . ... SUBROUTINE TAP_ERROR ( TAP_ROUTN, NAME, TEXT, STATUS ) . ... SUBROUTINE TAP_ERREP ( TAP_ROUTN, STATUS ) . ...

... The need for authentication and encryption is constantly increasing as more people gain access to the Internet and more people use it to conduct their daily business. ... The demand for secure network applications is set to explode. ... Currently, only IDEA (International Data Encryption Algorithm) is supported (using the more secure Cipher Feedback Mode). ... The conn package integrates all the security support in Karma into a flexible, simple to use scheme which is transparent to applications. ...

... Supervisor: Dr. Luca Del Zanna . ... Parma Workshop on Numerical Relativity and Gravitational Waves, 7-9/09/2011, INFN Parma e Dipartimento di Fisica, Parma . ... 8th Advanced School on Parallel Computing "PRACE Winter School", 6-10/02/2012, CINECA SuperComputing Application and Innovation Department, Bologna . ... Internship "PRACE Winter School Stage", 25/06/2012 - 28/09/2012, CINECA SuperComputing Application and Innovation Department, Bologna . ...

Next: *upspecrdf, downspecrdf* - Transform Up: Spectral Analysis Previous: *grid_plot* - Plot Results . The conversion of count rate to flux depends on the intrinsic spectrum of the source, so xflux must be used in conjunction with fit . Fit generates a table of the best fit intrinsic spectrum ( _int.tab extension). xflux uses this table to calculate either the integrated flux between two energy limits or the flux density at a specific energy. ... This produces ``..._obs.tab'' file. ...

... 22.Reference Frames . ... To derive the motion of a penny dropped inside an airliner moving at 600 miles/hr (about 1000 km/hr)--should we calculate it with respect to the interior of the airliner, or with respect to the ground? ... And if a similar penny is let go inside an orbiting spaceship--should its motion be calculated relative to the interior of the spaceship, or relative to the Earth outside? ... How do observations differ in the two frames--the airliner cabin and the Earth? ...

... The long parallel rays slanting across the top of the above radio image are known collectively as the Galactic Center Radio Arc and jut straight out from the Galactic plane . The Radio Arc is connected to the Galactic center by strange curving filaments known as the Arches. ... Publications with keywords: Galactic Center - Milky Way . Publications with words: Galactic Center - Milky Way . ... Milky Way Over the Bungle Bungles . ... Milky Way Galaxy Doomed: Collision with Andromeda Pending . ...

dfos = Data Flow Operations System, the common tool set for DFO . ... Daily workflow . DFOS . ... provided by DFS . ... These steps are called per DATE, the middle part also per MODE (CALIB or SCIENCE). I. Pre processing . ... DFOS tool . ... process for CALIB files . ... all tools from daily workflow part I up to II (except certification) . ... all tools from daily workflow, except for createAB, certifyProducts . ... DFOS tools: overview . ... DFS : tool developed and maintained by DFS . ...

Добро пожаловать, Гость . ... Общероссийская неделя "Астрономия на тротуаре" - 15-17 апреля . ... Новости астрономии и космонавтики (Модераторы: Karen , recarrion , LeMay ) ? Результаты Explorations Systems Architecture Study . ... 0 Пользователей и 1 Гость просматривают эту тему. Гость . ...

... Агабабаев В. СПбГУ . ... Алтайский М.В. ИКИ & ОИЯИ . ... Dark matter and generation of galactic magnetic fields . Борисевич Т.П. ГАО РАН . Варшалович Д,А. ФТИ им. А.Ф. Иоффе . Гладышев А.В. ОИЯИ . ... Jordan J.E. Max Planck Institut for nuclear physics (Heidelberg, Germany) . ... Каршенбойм С.Г. ГАО РАН & MPQ (Garching, Germany) . Problems in determination of the Planck constant and redefinition of the SI units in terms of fundamental constants . ... Степанов А.В. ГАО РАН . ...

... 2005 April 3 . The Galactic Center Radio Arc . ... The long parallel rays slanting across the top of the above radio image are known collectively as the Galactic Center Radio Arc and jut straight out from the Galactic plane . The Radio Arc is connected to the Galactic center by strange curving filaments known as the Arches. The bright radio structure at the bottom right likely surrounds a black hole at the Galactic center and is known as Sagittarius A* . ... About APOD | ...