... Three different techniques for averaging have been introduced. ... The average functions mentioned above will normally produce a result frame whose world coordinates are the intersection of the father frames' world coordinates. ... Averaging statistically consistent values ---   This command differs somewhat from the purely mathematical functions of the previous two commands in the sense that it tries to anticipate some of the astronomical content of the input data frames. ...

... CentralProcessor 0.11 documentation . ... The parameters listed here allow the user to configure the parset and the slurm job for continuum imaging of the science field. Some of the parameters can be set to blank, to allow cimager to choose appropriate values based on its ?advise? capability (which involves examining the dataset and setting appropriate values for some parameters. ... Number of CPUs to use on each core in the continuum imaging. ... User Parameters - Continuum Self-calibration . ...

... IRAF supports two kinds of parameters, auto parameters and hidden parameters, which are treated differently. auto parameters are updated every time a task is run. ... Parameters for each task are contained in `parameter files' in the uparm sub-directory in `myiraf'. ... im > imhead.longheader=yes # explicitly setting <task.param>=<value> im > eparam imhead # Edit the parameter file to update one or more # parameters at the same time # see next section . ...

Next: HST Paper Products: A New Way to Look at HST Data . ... After providing on-the-fly re-calibration of HST data to archive users, ST-ECF has embarked on a new project aiming at grouping, cosmic ray cleaning and drizzling images taken by most HST instruments. ... The production of the missing jitter files combined with the extraction of additional engineering parameters will greatly enhance the homogeneity and the scientific value of the entire archive. ... 1995, HST Data Handbook, STScI, 107 . ...

The determination of the detector parameters is based on sets of images of a spatially uniform-illumination scene (flatfield frames) and without any illumination (dark frames), putting a plug in place of the filter, taken at a series of exposure times. ... We interleave before and after each exposure time in the series of flatfield frames a set of reference images at an exposure time of 1 sec to determine the possible temporal variation of the illumination level. ...

Atmospheric influence on the different radio-engineering system functioning . ESTIMATION OF ATMOSPHERIC OPTICAL CHARACTERISTICS AND REMOTELY SANSED IMAGE CORRECTION . ... Direct transmittance estimation results for 12 channels of the spectrometer CHRIS. ... We have managed to develop a direct method of estimating the discrete Normalized Atmospheric Point Spread Function (NAPSF) from available images alone, not using any external sources of information about the atmosphere. ... IRE RAS 1996-20 11 ...

... overview of pyQC . ... output used by . ... All pyQC scripts and modules share a similar structure. Python offers to group functions, classes, etc. into modules which can be imported by different scripts. ... In order to avoid confusion if names are used by different (especially external) modules, the QC scripts use the 'from' statement only for pyQC modules, i.e.: . ... For other modules, the simple 'import' statement is used: . ... Python modules are also used for keeping script configuration. ...

... The value of tile-size, NW , may be thought of as a sixth coordinate axis in the chirplet transform parameter space - TF-area. Including this sixth coordinate axis provides us with a hierarchical (multi-resolution) CCT. ... Various 2- D slices through the multiresolution CCT may correspond to useful tilings of the TF plane with true parallelograms (true to the extent that the DPSS define a truly rectangular region in the TF plane). ...

On Systematic Differences in Individual Solutions and IERS Products Zinovy Malkin Institute of Applied Astronomy RAS, St. Petersburg, Russia 1 Present status Proper determination, modelling, and accounting for systematic differences between contributed series is of the great importance in compilation of the IERS products. ... Possible sources of systematic differences are: Ї Different reference systems (e.g. TRF, CRF, geopotential, time scale). ... 87 IERS Technical Note No. ...

Links given for particles of different shapes allows one to access our graphics illustrating the dependence of various optical properties of model scatterers on their parameters. ... Q ext , Q sca , Q abs , Q bk , albedo, g, Q pr vs x for different m . F ij vs theta for different x, m . ... Q ext , Q sca , Q abs , Q bk , albedo, g, F ij vs x for different m, alpha . F ij vs theta for different x, m, alpha . ... Q ext , Q sca , Q abs , Q bk , albedo, g, Q pr vs x for different m (TE/TM modes) . ...

CIMA configuration files offer You a conveniant way of saving CIMA set-ups to files. ... Then instead of making this selections interactively when You are observing, You can just load and apply the configuration files. ... Any other set-up will be ignored! ... In that case, You are forced to use the 'Load only' option to load the configuration file, inspect the selected set-up carefully, apply the set-up (with the 'Accept' or 'Apply' buttons) and then save a new version of the configuration file. ...

... Parameters of the Moon-perturbed orbit . ... From orbits consistent with this limitation and with the date of the launch October 1, 2000 as an example, an orbit was selected with apogee directed to the North Galactic pole at the begining and rotation of orbit plane was maximized. The initial state vector is given in the inertial coordinate system in epoch J2000.0. ... The orbit has initial perigee radius Rp=7000.0 km, initial apogee radius Ra=343000.0 km and initial period T=8.453 days. ...

... 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. ...

Next: Disks without filesystems Up: Filesystems Previous: Other tools for all . In addition to the filesystem creator ( mke2fs   ) and checker ( e2fsck   ) accessible directly or via the filesystem type independent front ends, the ext2 filesystem has some additional tools that can be useful. tune2fs   adjusts filesystem parameters. ... A maximal mount count. e2fsck   enforces a check when filesystem has been mounted too many times, even if the clean flag is set. ...

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

Scale-heights of the Galactic disk subsytems with different ages and metallicities . V.Marsakov & Yu. ... It is based on the fact, that all stars cross the disk plane several times during their Galactic orbital period. ... We have used our representative sample of nearby disk F2-G2 stars Marsakov & Shevelev (1995) in which fundamental stellar parameters was determined on the basis of published date on uvby-photometry, proper motion and radial velocities. ... Marsakov V.A., Shevelev Yu.G. Bull. ...

... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Nuclear activity and environment Effect of environment on AGN is not completely clear yet. ... 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Effect of the mass Mass slices ґ optical and radio AGN overall interaction one-on-one interaction relative location 05/09/2013 Galaxy Evolution over Five Decades - Cambridge 2013 Stratified study Stratifed study that considers several strata of mass. ...

... 0 ) = Z '' '' 0 [(1 \Gamma '')'' 1=2 sin 2 i sin 2!] ... We use the similarity theory to present the non--dimensional period T \ Lambda of the evolution of the parameters '' and i as a product of the independent factors: T \ Lambda = \ Gamma (4=15)(a \ Gamma3 =2 \ Lambda =LD )jL c (c 1 ; c 2 )j. Here LD = ? k \ Lambda a \ Gamma3 k \ Lambda '' \ Gamma3 =2 k ? \Gamma1=2 \ Lambda is the non-- dimensional parameter of disturbances similarity dependent on the dynamical characteristics of the ...

... A model for the chemical evolution of a disk galaxy is presented. The model reproduces all the basic . ... investigations of the star formation history. ... the galaxyЫand incorporating a delay in the onset of star formation make it possible to model different scenar- . ios for the evolution of a galaxy's luminosity. ... evolution of massive galaxies. ... of reconstructing the star-formation history and galactic luminosity from observations of galaxies at different . ...

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...