... Let us first find out which way -- rise in spectral resolution with some loss in the S/N ratio or increase in the S/N ratio with a fixed spectral resolution -- is better for the purpose of reduction of equivalent width determination errors. ... N -- number of counts for 1 ? ... line equivalent width, . ... Thus if the spectral resolution is managed to be increased (i.e. to decrease )without loss in the number of counts falling at 1 ?, the equivalent width measurement error is then proportional to . ...

... CentralProcessor 0.11 documentation . ... Here we detail the input parameters that cover the overall process control, and the switches to turn on & off different parts of the pipeline. Values for parameters that act as flags (ie. those that accept true/false values) should be given in lower case only , to ensure comparisons work properly. These parameters affect how the slurm jobs are set up and where the output data products go. ... SUBMIT_JOBS . ... User Parameters - Pipeline & job control . ...

Arecibo World Day data description . ... The F-region program covers the altitude range of 140 - 660 km. ... The KINDAT code in the CEDAR database for these parameters is 2010. ... The KINDAT code in the CEDAR database is 2021 for this kind of data. The barker-code program allows the measurement of electron concentration at a height resolution of 0.6 km with a very high S/N. This program typically covers the altitude range of 60 - 500 km. The KINDAT code in the CEDAR database is 2015. ...

XMM-Newton Science Analysis System . ... yes . ... pn source region expression for spectral analysis . ... pn background region expression for spectral analysis . ... mos1 source region expression for spectral analysis . ... mos1 background region expression for spectral analysis . ... mos2 source region expression for spectral analysis . ... pn source region expression for timing analysis . ... mos1 source region expression for timing analysis . ... mos2 source region expression for timing analysis . ...

... mama/ : STIS UV imaging . ... stis_flank/ STIS Flanking Field imaging . ... Directory name: stis_v1catalog/ stis_v1generic.cat Generic parameters (e.g. numbers, positions) from detect image fuv_v1.cat Photometric parameter from FUVMAMA+F25QTZ observation lp_v1.cat Photometric parameter from CCD+F28X50LP observation nuv_v1.cat Photometric parameter from NUVMAMA+F25QTZ observation s50ccd_v1.cat Photometric parameter from CCD+50CCD observation stis_v1catalog.fits Full Catalog in stsdas table format . ...

... Armagh Observatory, College Hill, Armagh BT61 9DG, +44 (0)28 3752 2928 . ... The interface between the lower solar atmosphere where energy is generated by subsurface convection and the corona comprises the chromosphere, which is dominated by jet-like, dynamic structures, called mottles when found in quiet regions, fibrils when found in active regions and spicules when observed at the solar limb. ... In addition, how they affect the coronal heating and solar wind need to be further explored. ...

Observed maximum rotation velocity uncorrected for inclination effect. This quantity is calculated from 21-cm line widths at different levels and/or rotation curves (generally in H_alpha). ... These data are characterized by some secondary parameters: telescope, velocity resolution, level of the 21-cm line width and bibliographic reference. ... we start from a standard sample (a set of measurements giving a large and homogeneous sample). ... HyperLeda . ...

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. ...

Static Fourier spectrometers are often used for spectral measurements of the ionosphere emissions. There are two main advantages of Fourier spectrometers (FS) - large geometric factor and high spectral resolution; these parameters are two orders better than for grating spectral instruments. ... In scanning Fourier spectrometer optical and electric modulation of signal is used to avoid this problem, for static Fourier spectrometer there are no such ways. ...

... 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). ...

... 18-Jan-2010 17:22 . ... Apache/2.2.3 (CentOS) Server at www.wdcb.ru Port 80 ...

... The technology needed to implement a Distributed Astronomical Data Archive (DADA) is available today (e.g., Fullton 1993). Query interface standards are needed, however, before the DADA information will be discoverable. ... These parameters would be used to index each dataset in each catalog. ... The technology is available today to perform cross-catalog queries, to fetch the data at the click of a mouse, quickly to add new observation catalogs, and to distribute the load across multiple machines. ...

Next: Program use Up: Description of program searchdup Previous: Description of program searchdup . Parameter input is done with a graphic user interface. ... Input file: Name of the input catalog file. It has to be formatted, one record per source/observation, according to the format used in the Arcetri observations and source archives. ... Minimum number of observations per source Source with less than this number of independent observations are not included in the output file . ...

... 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 . ...

The problem of solar wind data correlation for the observations onboard several spacecraft is very important for three points of view: . ... This problem is studied now in detail by systematic determination of ion flux and ion velocity data correlations by INTERBALL-1 (IKI group), WIND and IMP 8 (both - MIT group). ... Solar wind plasma correlation lengths from IMP 8, WIND and INTERBALL-1. ... Correlation of solar wind observations onboard several spacecraft: INTERBALL-1, IMP 8 and WIND data. ...

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 ...

LCWS06, Vancouver, BC, July 19-23, 2006 Tracking resolution , fitting and detector optimization Nikolai Sinev , University of Oregon Topics to be discussed Limits on resolution for track parameters Different track fitting methods Discussion of results of track fitting with SLD-like fitter (weight matrix based) Comparison with simple circle fitter Effects of detector design Conclusions 7/19/ 2006 Nick Sinev , Tracking ... 7/19/2006 Nick Sinev, Tracking resolution 25 ...

ENERGETIC PARTICLE EXPERIMENT DOK-2 . ... Due to much higher energy, angular and time resolution, better separation of electrons and ions it is expected that DOK-2 experiment will allow to re-examine in more details energetic particle population and related processes in magnetosphere regions covered by the spacecraft orbit. ... Thin foil in front of detector absorbes protons with energies E<400 keV so this detector measures electron spectrum in 20 - 420 keV range. ... Energy values, keV . ...

THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE BY MEANS OF DIGITAL MODELS. ... The surface brightness of Mercury was measured Danjon (1933, 1949, 1953) and Harris (1961) in phase angle 3o-123o. The analysis of the various data of the integral photometric gives the results of determination of the main photometric constants for Mercury. ... THE PHOTOMETRIC RESEARCHS OF THE MERCURY'S SURFACE: S.G. Pugacheva The surface brightness of the Mercurian images was established on the geologic map Mercury. ...

Next: Coherent integration Up: Astrometry data reduction Previous: Introduction Contents . ... In order to increase the SNR for these data, we coherently integrate the complex visibility for typically 200 ms. The coherent integration is done using the COBRA procedure cohstrictor . In order to provide the necessary input file for this step, the following CONSTRICTOR parameters should be used. ... The .coh extension is standard for coherent integration. ... NumAv = 100. ... Pass on metrology data . ...