... Many options allow to run emchain on a subset of the data, restart from previous output, change the options of constituent tasks. The exposures , instruments and ccds parameters allow to run emchain on a subset of the data files (select an explicit list of exposures, instruments or CCDs). ... This is similar to passing backgroundset to emenergy , but allows to save all such files under a different name. emchain normally ignores data obtained with CCD read-out gain set to low (/10). ...

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• Parameters

... 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. ...

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• The AstroStat Slog Blog Archive my first AAS. VI. Normalization
• Filtering ROSAT HRI data on the basis of background level
• Regions and Source Parameters

... casa::Normal . ... Normal ( RNG *gen, Double mean=0.0, Double variance=1.0) . Construct a random number generator for a normal distribution. virtual . ... Returns a value from the normal distribution. virtual Double . ... These function allow you to manipulate the parameters (mean & variance) described above through the base class. virtual Vector < Double > . ... The second and third arguments define the parameters for this distribution as described in the synopsis. virtual casa::Normal::~Normal . ...

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• uvfit
• uvplanet
• VLATYPE

... Observational Zoo of Binaries with Compact Stars . Evolutionary Scenarios of Binary Systems . ... Evolution of Magnetic Rotators . ... Mixing types of E-P-A binary systems with non-zero orbital . ... Binary Pulsar Diversity and High Neutron Star Birth Velocity . ... Ejectors in Massive Binary Systems . ... Other Candidates for Ejecting Stars in Binary Systems . ... Cosmic Rays and Evolution of Binary . ... Sky in Gravitational Waves . ... Gravitational Waves from Coalescing Compact Binary Stars . ...

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• Initial Distributions of Binary Parameters
• Normal star evolution
• No Title

... The FOS employed one of six basic data taking modes to acquire science data: . Spectrophotometry (ACCUM). ... Image. ... ACCUM was by far the most commonly used observing mode. ... In IMAGE mode observations both the number and length of rasters and the y- position of each raster could be specified, so that: 1) a white-light image of all or a portion of the aperture was possible with the MIRROR, and 2) spectra from different portions of the aperture were sampled with a disperser. ...

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• http://www.stsci.edu/hst/HST_overview/documents/multidrizzle/ch72.html
• STIS Instrument Handbook
• Simulation of a Distant Cluster of Normal Galaxies

... Previous: A Posteriori Guidance for Astronomical Images . ... We present an original algorithm for the recognition of anomalous events in a CCD frame (i.e., cosmic hits, bad pixels etc.) The algorithm is able to distinguish between these events and real features by comparing the standard deviation and the kurtosis of a synthetic PSF, whose width is given by the user, and the corresponding values in a running window, whose size is chosen by the user, in the actual frame. ...

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• A Spectroscopy Exposure Time Calculator for IRAF
• A Method for Minimizing Background Offset Errors When Creating Mosaics
• An Approach for Obtaining Polarization Information from COBE-DMR

... 2001 May 1 . Antarctica Hears Little Normal Matter in the Big Bang . ... Sunday, independent collaborations behind three such instruments announced evidence that overtones heard are consistent with our universe having only about five percent normal matter and 95 percent dark matter or dark energy . This amount of normal matter was expected were our universe to have undergone a particularly explosive early phase of the big bang known as inflation . ... About APOD | ...

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• Zen: sncat design
• Zen: NewExtentsBasedRanking
• APOD: 2005 August 8 - Mars to Appear Normal this August

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 ...

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The principal designation is the name, amongst the different possible names, chosen to identify the object because it is considered as the most reliable to cross-link to other databases or archives (eg. ... We recommend that authors of tables or catalogues identify their objects with the principal name, the celestial position plus possibly a name specific to the context (for example in a paper studying 3C sources use also the 3C name). ... HyperLeda . ...

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• Regression Analysis
• Estimation
• Fitting of data

... Data Handling and Products > Data Reduction FAQ > I derived quantities related to the performance of an instrument. How do I know whether these numbers are "normal"? ... Observing with ESO Telescopes . ... Instrument Pipelines . ... ESO-MIDAS . ... ESO Data . ... Related External Services . ... The quality control group at ESO monitors a variety of instrument parameters such as zeropoints, efficiencies, read-out noise, etc. ... http://www.eso.org/observing/dfo/quality/ <INSTRUMENT> /qc/qc1.html . ...

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• POLIMODEL (V2.00) --- November00 --- POLIMODEL (V2.00)
• VLTI Calibrator Selection Help Page
• Quality Control: Image flats

... SFIT is a general-purpose code designed to optimize theoretical stellar spectra to an observed spectrum. ... While the programme expects input from "stdio", it is more natural to save commands in a file (eg "sfit_input") and run the code simply by . ... If the spectra to be fitted have a filename "star_spectrum", then the best fit spectrum will be written out, together with the renormalized input spectrum, to a file called "star_spectrum.fit". ... sets up model spectrum grid (and for 2nd star) . ...

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• Armagh