Next: Combine Example Up: Preparing Your Calibration Previous: Combining Flat Fields . The procedure is similar to the flat field combining procedure, except that you may want to scale the sky level using the mean, median or the mode of the intensity distribution or taking into accoun the exposure time. Hence, in the combining, like in the case of combining flat fields, correct weighting of the frame is important. ... Table: Keywords for combining sky calibration frames . ...

... In brief: the frequency-dependent radiative transfer equation is solved for a dust under assumption of spherically-symmetric geometry for its distribution taking into account particle size distribution and quantum heating effects for the very small dust particles. ... Table: Model parameters for IRAS04296+3429. ... parameter . ... hot dust shell) . ... The best fit to the spectral energy distribution of IRAS04296 is shown by heavy solid line (see Table2 for details concerning parameters of the model...

... Archives . ... Reduced and Processed Data . ... 2 distribution plays an incredibly important role in astronomical data analysis, but it is pretty much a black box to most astronomers. ... Comment ( RSS ) | ... I guess in the typical analysis we call chi2 a ?random variable? that follows the chi2 distribution: . ... where D(i) is the observed data, M(i) is the model predicted data and we ?silently? assume that D(i) is normally distributed and each i measurement is independent. ... Chandra Blog . ...

Next: Star Formation Rate and Up: No Title Previous: Calculation of Evolutionary Tracks . To start calculations, we choose the distributions of the initial binary parameters: the mass of the primary ZAMS component, , binary mass ratio, , orbital separation a . ... whereas the mass ratio distribution is not. ... The zero assumption often made is that the mass ratio distribution has a flat shape, that is binaries with a high mass ratio occur as frequently as those with equal masses. ...

Searching for GRB -GWB coincidence during LIGO science runs Isabel Leonor University of Oregon LIGO-G050216-00-Z Motivation almost 40 years since GRBs were discovered past 15 years has been time of important clues isotropic and inhomogeneous distribution (BATSE); first optical, x-ray, radio counterparts; redshift measurements; association with core-collapse supernovae yet important ...

... Each document which is or can be circulated outside DMD division has to be issued according to the following Technical Archive procedure. ... Identify the type of document according to the ESO Documentation Type definition list . ... Get the chronological four-digit number from Technical Archive (pday@eso.org phone 6462 or tecarch@eso.org), specifying: the document type, PSC, document title, author(s), issue and issue date. ... ESO document number (i.e. VLT-SPE-ESO-19100-1836). ... issue number . ...

. Supernovae distribution according to their magnitudes. This graph shows the distribution of SNe according to the magnitude. This graph is kept up to date till SN 2000ek . Along X-axis there are all magnitudes bands so that you have to read in this way: for example, the band on the graph marked as 18 takes in all supernovae between mag.17 and 18, or if one prefers ...until less than mag. 18, and so on...

... Meta Index / Home Page This task accepts an arbitrary number of PPS OSW rotated image files and produces a mosaiced image. The task description is basically the same as that for emosaic, from which it has been derived, with the important difference that it does not need an exposure image as ommosaic uses the exposure time keywords from the input file headers to build the exposure map for the combined image. ...

FOC Instrument Handbook Version 5.0 83 8.0 THE FOC EXPOSURE TIME SIMULATOR, FOCSIM The general procedures to compute the required exposure times for any FOC observing configuration and possible emission source outlined in the preceding section are perfectly ad­ equate for most purposes including proposal preparation and feasibility verification. ... In support of COSTAR, FOCSIM has been upgraded to allow for automatic selection of the COSTAR imaging modes. ...

... There are compelling reasons for the pulsar community to utilise a standard data storage format. For example, standardisation of file formats significantly decreases the amount of effort required to integrate new instruments into the analysis chain. ... Accordingly, we have defined PSRFITS as a standard FITS-based format for pulsar data files. ... For example, the first line of Processing History HDU contains information about the data acquisition program and the initial structure of the file. ...

... The dayside auroral precipitation consist of magnetosheath related boundary layer precipitation, and plasma sheet related BPS/CPS precipitation (extensions of the nightside precipitation regions). ... For example, the much lower fluxes from the LLBL region when compared to the cusp are compensated by the bidirectional electron beams found in the LLBL: the precipitating energy fluxes in the LLBL and the cusp are not that different. ... directly through the cusp and plasma mantle . ...

... not more than 2 participants in the younger group. not more than 1 participant in the senior group. prizewinners (I-st or II-nd prize) of the previous IAO not older than the age limit who did not used such a possibility before. exactly 2 team leaders (specialists in astronomy or astronomy education). ... For the countries, starting their activity in the International Astronomy Olympiad and for the students participating the first time in IAO the age limits for the groups for IAO-2005 are defined as:...

ON-LINE STATIC EIT RECONSTRUCTION SERVER . ... Static image reconstruction from the data measured in vivo is still intriguing problem in EIT. ... dipole (adjacent) current injection and voltage measurements on pairs of adjacent electrodes (like in Sheffield systems) . ... You can view examples of the text files for polar , dipole and trigonometric injection, use them for testing the server and find more details on HOW TO PREPARE INPUT FILE FOR THE ON-LINE EIT RECONSTRUCTION SERVER page. ...

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

Karas V.I., Moiseev S.S., Novikov V.E. Nonequilibrium stationary distributions of charged particles in solid state plasma. ... In russian . ... Karas V.I., Moiseev S.S. About conversions of nuclear energy to electric one based on the nonequilibrium particle distributions. ... Altaiskii M.V., Balebanov V.M., Erokhin N.S., Zolnikova N.N., Mikhailovskaya L.A., Moiseev S.S. Analytic approximations for description of charged particles interaction with the emitter of radioisotope source of current. ...

FEATURES OF THE HYDROGEN DISTRIBUTION AROUND LUNAR CRATERS PROCLUS AND KEPLER. ... In result of analysis of the data Lawrence and Feldman constructed the hydrogen distribution on the lunar surface [1]. ... However, the authors shown, that EN flux data features may be explained by other element abundance in the lunar soils, namely: Si, Ca, Gadolinium (Gd), Samarium (Sm) and Fe. ... Using of the Feldman's interpretation of the Lunar Prospector data [8], we constructed hydrogen distribution map (Fig.1). ...

... One of the most widely used tools of Fourier analysis is the Parseval theorem. It enables the experimentalist to view how the `energy' in the signal is distributed among frequencies. The Fast Fourier Transform (FFT) algorithms have made power spectra one of the obvious diagnostics tools during data acquisition, and energy maps are a versatile alternative. ... The result is an energy map (Fig. 9), showing the distribution of energy corresponding to the wavelet map (Fig. ...

Next: The CDS Information Hub . ... In this context, the CDS (Centre de Donn?es astronomiques de Strasbourg) has developed the GLU system (G?n?rateur de Liens Uniformes). This tool allows all managers participating in the system to describe and easily distribute the URL definitions required to access their databases. ... So, the GLU system is particularly adapted to design cooperative Web services, allowing one to generate links to other services which remains always up-to-date. ...

Short-Period Comets: Origin and Terrestrial Impact Hazard . ... The model is consistent with the basic observed distributions of near-parabolic comets, short-period comets, Centaurs and high-eccentricity trans-Neptunian objects.This model requires that initial objects in the early Solar System are concentrated to the outer planetary region, and the physical lifetime of comets in the inner planetary region at the present epoch is an increasing function of initial perihelion distances. ...

T he Siding Spring Survey (SSS) is a Near-Earth Object search program that utilises the 0.5-m Uppsala Schmidt Telescope at Siding Spring Observatory, N.S.W., Australia. ... The mission of the Siding Spring Survey is to contribute to the inventory of near-earth objects (NEOs), or more specifically, the potentially hazardous asteroids (PHAs) and comets (PHOs) that may pose a threat of impact and thus harm to civilization. ... Based on the CSS Mission page . ... Siding Spring Survey Main Page . ...