... Next: Statistical Analysis Up: Image Restoration and Previous: Restoration of HST . ... This presentation is devoted to the MEM (Maximum Entropy Method) task, version D, for image restoration in IRAF. Described in detail are its enhanced functions of Poisson noise only case handling and subpixelization technique; improved algorithms for maximization including the preconditioned conjugate method, accurate Newton method, the accurate one-dimensional search, and the model updating technique. ...

... 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, . ...

... 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? ...

Next: Calling Parameters Up: CAL_rgsgetXRTFigure Previous: CAL_rgsgetXRTFigure Contents . This provides the shape of the XRT along the dispersion direction (integrated in cross-dispersion). ... Numerical integration of the parameterized PSF (see HIGH accuracy level described in section 3.2.1 ) . ... The width of the PSF of the telescope scales as a function of angle of incidence on the gratings and diffration angle of the RGA by the chromatic magnification function . ...

... the radiative transfer equation (RTE) for the randomly-irregular magnetized plasma has been derived on the base of general grounds of the multiple scattering theory . ... Solutions of several absolute tasks of the scattering theory have been obtained (on the optical depth of the ionospheric plasma layer, on the value of radio wave anomalous attenuation, on anomalous refraction, on the backscattered signal intensity for the source being placed within a plasma layer). ...

... There are a lot of computer codes simulating this scattering and freely available in the Internet (see e.g. links on our JPDOC page ). ... The code and input file are available in the directory . ... A slightly modified code of Barber Hill with a C-shell and input files is available in the directory . ... The code, input and test output files are available in the directory . ... See also readme file. file. ... The code, input file and their description (a TeX file) are available in the directory . ...

... 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 described algorithm is suitable for measurements of complex images of stars. ... a) the zero-based number of stars in the complex (multicentric) image, . b) set of preliminary coordinates - x i , y i , for all stars, index i is number of a star, . ... i - index of a star in the complex image; . ... These parameters are calculated by a nonlinear method of a least squares.The main output parameters of this algorithm are x i , y i ; where the index i is number of a star in the multicentric image. ...

Calibration of ALFA data in LiveData R. Minchin Abstract The calibration factors to be entered into LiveData have been calculated, for the parameters used for the AGES and ZOA E-ALFA pro jects and a method is described for calculating these more generally. ... The calibration factors 1 2 Testing the calibration http://www.naic.edu/~ rminchin/alfacal.shtml Three AGES cubes have so far been constructed using this calibration: the completed NGC 1156 and NGC 7332 cubes and the incomplete Abell 1367 cube. ...

... Classes . ... casa::Aberration . ... More... #include < Aberration.h > . ... Aberration (const Aberration &other) . ... operator() ( Double epoch) . ... Actual Aberration for a certain Epoch is calculated by the () operator as Aberration(epoch), with epoch Double MJD, values returned as an MVPosition . ... Double casa::Aberration::aval [3] [private] . ... Double casa::Aberration::checkEpoch [private] . ... Double casa::Aberration::dval [3] [private] . ... const Double casa::Aberration::INTV [static]...

The Arcetri Spectral Code (Landi and Landini 2002) allows to evaluate the spectrum of continuum and line radiation emitted by hot and optically thin plasmas in the spectral range 1-2000 Angstrom. The Code is composed by a large database of atomic data and transition probabilities for calculating spectral line emissivities and a suite of fortran programs able to evaluate free-free, free-bound and two-photon continuum radiation. ... Landi, E., Landini, M., 2002, A , 384, 1124 . ...

... We consider stars with a constant (solar) initial chemical composition. Before the Roche lobe overflow, the components evolve as single stars (see for details LPP96). ... If the mass transfer onto a normal star occurs on a time-scale ten time shorter than the thermal Kelvin-Helmholz time for this star or a compact star is engulfed by a giant companion (e.g. as a result of the kick), the common envelope (CE) stage of the binary evolution is set in (Paczynski 1976). ...

... The time taken for 10 full swings of a long pendulum performing small angle oscillations is measured seven times. The results (in seconds) are: 34.63, 34.80, 34.71, 34.80, 38.21, 34.54, 34.77 (a) Estimate the error in making a timing measurement. [3] (b) Estimate of the period of the pendulum and the error in this estimate. 3] The pendulum is now left to swing and two experiments are made in which the time is measured for many complete swings using the same method as for one swing. ...

... Abrikosov strings arise in some superconductors when the level of the external magnetic field exceeds a certain critical value. Then the superconductivity starts to break down by forming normal conductivity zones inside the superconductor, looking like strings stretched along the direction of the field. ... Moreover, a reduction of Seiberg--Witten equations to such complex Abrikosov strings can be defined, leading to systems of vortex equations on their normal bundles. ...

... Subject: FRIDAY'S FANTASTIC FIREBALLS . ... If anyone saw the major fireballs which appeared over Ireland (andб parts ofб GB) at about 22.55 BST on Friday 21 September, please quickly send as much detail as possible of your observation to me, and to Armagh Observatory, at jmf arm.ac.uk . ... PLEASE GIVE AS MUCH OF THE FOLLOWING DETAIL AS POSSIBLE: . ... Approximately what angle above the horizon were the fireballs when you first saw them? ... Please describe any colours that you saw. ...

... 8, ``Celestial Mechanics'', 2002 Earth penumbra effects on AES motion taking into account the refraction and the extinction of the light in the atmosphere A. M. Fominov Institute of Applied Astronomy, St. Petersburg, Russia The perturbing acceleration F of the Artificial Earth Satellite (AES) due to the solar ... In step 1, the table of the shadow function values with the angle distances d between the solar disk and the earth disk edge may be calculated. ...

GTK+ / Gnome Application Development . Previous . Home . Next >>> . The previous part got you started with a skeletal application. This part of the book describes features available to the Gnome developer as she begins to implement the main functionality of the program. The first few chapters in this part cover some useful GTK+ details. The later chapters branch out to describe facilities unique to Gnome. ... Gnome Application Checklist . ...

... The models provided are: . abs - absorption of x-rays by neutral gas with solar abundances. parameter 1 = . ... parameter 2 = . ... normalization - logarithmic value of the flux density at 1 keV in units of keV cm -2 s -1 keV -1 . ... normalization - logarithmic value of the normalization of the gaussian in units of keV cm -2 s -1 . ... absorption ( params )* model ( params ) . ... A single value for the normalization (i.e., fixed normalization) will force the program to use that value. ...

QED calculations of H2 molecule Vladimir A. Yerokhin St. Petersburg State Polytechnical University in collaboration with Krzysztof Pachucki Warsaw University FFK 2013, Pulkovo, St. Petersburg, October 7-11 Do we need QED for H2? ... 150, 51 (2011) An order of magnitude in precision every 14 years QED : -0.1964 (9) 5, 3039 (2009) Theory: J. Chem. ... Wave function is represented by a linear combination of basis functions Choice of the basis functions: · · Explicitly correlated basis set. ...

LIC (Line Integral Convolution) plug-in . ... Last changed: 17-Sep-1996 . ... Basically this plug-in will smear a image at each pixel along a line which direction and length is calculated from a vector field. This vector field is calculated as the direction or gradient at each pixel of the hue, saturation or brightness of another image. An example of this process is given above. ... Using this as the input of the LIC on the original image produces the third image. ... Some examples . ...