... Default . ... The descriptions below focus on the meaning of each filename parameter, leaving the exact details of the inferred default value to be explained in the algorithm section. evlist . ... file . The response matrix file (OGIP-compliant format). ... If a spectrum file is not provided ( withspectrum =no) this parameter specifies the INDEX number of a source in the source description list (parameter srclist ), and thereby the incidence angle and selection regions for the response matrix. ...

... CentralProcessor 0.11 documentation . ... The following parameters determine where the measurement sets are that hold the data to be processed. The default behaviour is to read the MS from the given Scheduling Block (SB) directory. ... Location (on galaxy) of the scheduling blocks. This is used when specifying SB numbers - the default is the standard location for BETA operation. ... These parameters determine which beams in the data to process. ... User Parameters - Pipeline & job control . ...

... Computing the true count rates for digital data. ... The following equation is used to find the count rate. x = ( raw counts / sample time ) . ... True count rates for digital data are corrected by using the first equation for a point source and the second for an extended source. a = ( y - pre_amp - darkrate ) / ( highvolt x pt_effic ) . ... True photocurrents (count rates for analog data) are corrected by the first equation for point sources and the second equation for extended sources. ...

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 . ...

. Next: Example Up: Long-Slit and 1D Previous: Command Summary . For the storage of control parameters and results, the context LONG uses a number of special keywords. They are intialised by the command SET/CONTEXT LONG , their values can at any time be listed by typing SHOW/LONG . The following table provides a brief description of the purpose of the LONG keywords: . љ . Table: Keywords Used in Context LONG . љ . Table: Keywords Used in Context LONG (continued) . Rein Warmels . Mon Jan 22 15:08:15 MET 1996

... All the parameters provided in this database have been obtained using the the MIRIAD ( Sault et al. 1995 ) task MBSPECT . MBSPECT makes a spectrum of the velocity (or frequency) axis of a cube. The spectrum is beam-weighted, over the width specified, for the other image axes. ... Robust parameters are calculated by using an algorithm which minimises the mean absolute deviation of the flux-weighted velocities. mask= This specifies the x-axis ranges to be excluded from any continuum fit. ...