13.6 CALIBRAT
For a lengthy description of the calibration of interferometric
data (\zxhlp{VLA} and VLB line and continuum) enter:
\zxhlp{HELP} \zxhlp{CALIBRAT}
****************************************************************
\zxhlp{ACCOR} Corrects cross amplitudes using auto correlation measurements
\zxhlp{ACFIT} Determine antenna gains from autocorrelations
\zxhlp{ACLIP} edits suto-corr data for amplitudes, phases, and weights out of range
\zxhlp{ACSCL} Corrects cross amplitudes using auto correlation measurements
\zxhlp{ANCAL} Places antenna-based Tsys and gain corrections in CL table
\zxhlp{ANCHECK} Checks By sign in Antenna files
\zxhlp{ANTAB} Read amplitude calibration information into AIPS
\zxhlp{ANTENNAS} Antennas to include/exclude from the task or verb
\zxhlp{ANTUSE} Antennas to include/exclude from the task or verb
\zxhlp{ANTWT} Antenna Weights for UV data correction in Calibration
\zxhlp{APCAL} Apply TY and GC tables to generate an SN table
\zxhlp{APGPS} Apply GPS-derived ionospheric corrections
\zxhlp{ATMCA} Determines delay/phase gradient from calibrator observations
\zxhlp{BASELINE} specifies which antenna pairs are to be selected/deselected
\zxhlp{BASFIT} fits antenna locations from SN-table data
\zxhlp{BDAPL} Applies a BD table to another data set
\zxhlp{BLAPP} applies baseline-based fringe solutions a la \zxhlp{BLAPP}
\zxhlp{BLAVG} Average cross-polarized UV data over baselines.
\zxhlp{BLCAL} Compute closure offset corrections
\zxhlp{BLCHN} Compute closure offset corrections on a channel-by-channel basis
\zxhlp{BLING} find residual rate and delay on individual baselines
BLPCL Do divide by I,Q,U models for circular polarization \zxhlp{BLCHN}
\zxhlp{BLPLT} Plots \zxhlp{BLCAL} tables in 2 dimensions as function of baseline and IF
BLPOLCAL Do \zxhlp{BLCHN} for I, Q, U, V models
\zxhlp{BLVER} specifies the version of the baseline-calibration table used
\zxhlp{BPASS} computes spectral bandpass correction table
\zxhlp{BPASSPRM} Control adverb array for bandpass calibration
\zxhlp{BPCOR} Correct BP table.
\zxhlp{BPEDT} Interactive TV task to edit uv data based on BP tables
\zxhlp{BPEPL} Plots bandpass tables overlaying multiple times like \zxhlp{BPEDT}
\zxhlp{BPERR} Print and plot \zxhlp{BPASS} closure outputs
\zxhlp{BPFLG} Flgas uv data based on bad BP values
\zxhlp{BPLOT} Plots bandpass tables in 2 dimensions as function of time
BPPLT Plots selected contents of bandpass (BP) files versus time
\zxhlp{BPSMO} Smooths or interpolates bandpass tables to regular times
\zxhlp{BPVER} specifies the version of the bandpass table to be applied
\zxhlp{BPWAY} Determines channel-dependent relative weights
\zxhlp{BPWGT} Calibrates data and scales weights by bandpass correction
\zxhlp{BSPRT} print BS tables
\zxhlp{BSROT} modifies SD beam-switch continuum data for error in throw
\zxhlp{CALCODE} specifies the type of calibrator to be selected
\zxhlp{CALDIR} lists calibrator source models available as AIPS FITS files
\zxhlp{CALIB} determines antenna calibration: complex gain
\zxhlp{CALIBRAT} describes the process of data calibration in AIPS
\zxhlp{CALIN} specifies name of input disk file usually with calibration data
\zxhlp{CALRD} Reads calibrator source model-image FITS file
\zxhlp{CALSOUR} specifies source names to be included in calibration
\zxhlp{CC2IM} Make model image from a CC file
\zxhlp{CENTR} modifies UV data to center the reference channel
\zxhlp{CHANSEL} Array of start, stop, increment channel numbers to average
\zxhlp{CHREFANT} Name of reference antenna
\zxhlp{CLCAL} merges and smooths SN tables, applies them to CL tables
\zxhlp{CLCOP} copy CL/SN file calibration between polarizations or IFs
\zxhlp{CLCOR} applies user-selected corrections to the calibration CL table
\zxhlp{CLCORPRM} Parameter adverb array for task \zxhlp{CLCOR}
\zxhlp{CLINT} CL table entry interval
\zxhlp{CLINV} copy CL/SN file inverting the calibration
\zxhlp{CLIP} edits data based on amplitudes, phases, and weights out of range
\zxhlp{CLSMO} smooths a calibration CL table
\zxhlp{CLVLB} Corrects CL table gains for pointing offsets in VLBI data
\zxhlp{CMETHOD} specifies the method by which the uv model is computed
\zxhlp{CMODEL} specifies the method by which the uv model is computed
\zxhlp{CODETYPE} specifies the desired operation or data type
\zxhlp{CONFI} Optimize array configuration by minimum side lobes
\zxhlp{CPASS} computes polynomial spectral bandpass correction table
\zxhlp{CSCOR} applies specified corrections to CS tables
\zxhlp{CVEL} shifts spectral-line UV data to a given velocity
\zxhlp{DCHANSEL} Array of start, stop, increment channel #S + IF to avoid
\zxhlp{DECOR} Measures the decorrelation between channels and IF of uv data
\zxhlp{DEFLG} edits data based on decorrelation over channels and time
\zxhlp{DELCORR} Controls task actions on calibration tables.
\zxhlp{DELZN} Determines residual atmosphere depth at zenith and clock errors
\zxhlp{DFCOR} applies user-selected corrections to the calibration CL table
\zxhlp{DGAUS} Correct UV model for convolution by Clean beam
\zxhlp{DIGICOR} specifies whether VLBA digital corrections are to be applied
\zxhlp{DOACOR} specifies whether autocorrelation data are included
\zxhlp{DOAPPLY} Flag to indicate whether an operation is applied to the data
\zxhlp{DOBAND} specifies if/how bandpass calibration is applied
\zxhlp{DOBTWEEN} Controls smoothing between sources in calibration tables
\zxhlp{DOCALIB} specifies whether a gain table is to be applied or not
\zxhlp{DODELAY} selects solution for phase/amplitude or delay rate/phase
\zxhlp{DOFIT} Controls which antennas are fit by what methods
\zxhlp{DOFLAG} Controls closure cutoff in gain solutions and flagging
\zxhlp{DOOSRO} calibrating amplitude and phase, and imaging \zxhlp{VLA} data
\zxhlp{DOPOL} selects application of any polarization calibration
\zxhlp{DOVLAMP} Produces amp calibration file for phased-\zxhlp{VLA} VLBI data
\zxhlp{DT2PD} Write PD table from a PD table text file
\zxhlp{DTSIM} Generate fake UV data
\zxhlp{EDITA} Interactive TV task to edit uv data based on TY/SY/SN/CL tables
\zxhlp{EDITR} Interactive baseline-oriented visibility editor using the TV
\zxhlp{ELEVLIM} Lower limit on elevation
\zxhlp{ELFIT} Plots/fits selected contents of SN, TY, SY, PC or CL files
\zxhlp{ELINT} Determines and removes gain dependence on elevation
\zxhlp{EOPSFILE} Name of text file containing EOP information
\zxhlp{EVACL} Evaluates statistics in closure phase and amplitude
\zxhlp{EVASN} Evaluates statistics in SN/CL tables
\zxhlp{EVAUV} Subtracts & divides a model into UV data, does statistics on results
\zxhlp{FACES} makes images of catalog sources for initial calibration
\zxhlp{FARAD} add ionospheric Faraday rotation to CL table
\zxhlp{FGPLT} Plots selected contents of FG table
\zxhlp{FGPRT} Pprints counts of selected portions of an FG table
\zxhlp{FGTAB} writes frequency-range flags to a text file to be read by \zxhlp{UVFLG}
\zxhlp{FINDR} Find normal values for a uv data set
\zxhlp{FIXWT} Modify weights to reflect amplitude scatter of data
\zxhlp{FLAGR} Edit data based on internal RMS, amplitudes, weights
\zxhlp{FLAGVER} selects version of the flagging table to be applied
\zxhlp{FLGIT} flags data based on the rms of the spectrum
\zxhlp{FQTOL} Frequency tolerance with which FQ or frequency entries are accepted.
\zxhlp{FRCAL} Faraday rotation self calibration task
\zxhlp{FREQID} Frequency Identifier for frequency, bandwidth combination
\zxhlp{FRING} fringe fit data to determine antenna calibration, delay, rate
\zxhlp{FTFLG} interactive flagging of UV data in channel-time using the TV
\zxhlp{GAINERR} gives estimate of gain uncertainty for each antenna
\zxhlp{GAINUSE} specifies output gain table or gain table applied to data
\zxhlp{GAINVER} specifies the input gain table
\zxhlp{GCPLT} Plots gain curves from text files
\zxhlp{GCVER} specifies the version of the gain curve table used
\zxhlp{GETJY} determines calibrator flux densities
\zxhlp{GPSDL} Calculate ionospheric delay and Faraday rotation corrections
HLPCLEAN Cleaning tasks - run-time help
HLPEDIBP Interactive BP table uv-data editor \zxhlp{BPEDT} - run-time help
HLPEDICL Interactive SN/CL table uv-data editor - run-time help
HLPEDIPC Interactive PC table editor \zxhlp{PCEDT} - run-time help
HLPEDIPD Interactive PD table editor \zxhlp{PDEDT} - run-time help
HLPEDISN Interactive SN/CL table (not UV) editor - run-time help
HLPEDISS Interactive SY table (not UV) editor - run-time help
HLPEDISY Interactive SY table uv-data editor \zxhlp{EDITA} - run-time help
HLPEDITS Interactive TY table (not UV) editor - run-time help
HLPEDITY Interactive TY table uv-data editor \zxhlp{EDITA} - run-time help
HLPEDIUV Interactive uv-data editor \zxhlp{EDITR} - run-time help
HLPFTFLG Interactive time-channel visibility Editor - run-time help
HLPIBLED Interactive Baseline based visibility Editor - run-time help
HLPPCFLG Interactive time-channel PC table Editor \zxhlp{PCFLG} - run-time help
HLPSCIMG Full-featured image plus self-cal loops, editing - run-time help
HLPSCMAP Imaging plus self-cal and editing \zxhlp{SCMAP} - run-time help
HLPSPFLG Interactive time-channel visibility Editor \zxhlp{SPFLG} - run-time help
HLPTVFLG Interactive time-baseline visibility Editor \zxhlp{TVFLG} - run-time help
\zxhlp{IANTB} Writes out GC and TY data in \zxhlp{ANTAB} format
\zxhlp{IBLED} Interactive BaseLine based visibility EDitor
\zxhlp{ICHANSEL} Array of start, stop, increment channel #S + IF to average
\zxhlp{IM2CC} Task to convert an image to multi-facet Clean Components
\zxhlp{IMAGR} Wide-field and/or wide-frequency Cleaning / imaging task.
\zxhlp{IMFRING} large image delay fitting with \zxhlp{IM2CC} and \zxhlp{OOFRING}
\zxhlp{IMSCAL} large image self-cal with \zxhlp{IM2CC} and \zxhlp{OOCAL}
\zxhlp{INDXH} writes index file describing contents of UV data base
\zxhlp{INDXR} writes index file describing contents of UV data base
\zxhlp{INTERPOL} specifies the type of averaging done on the complex gains
\zxhlp{INTPARM} specifies the parameters of the frequency interpolation function
\zxhlp{KRING} fringe fit data to determine antenna calibration, delay, rate
\zxhlp{LDGPS} load GPS data from an ASCII file
\zxhlp{LISTR} prints contents of UV data sets and assoc. calibration tables
LISUN prints contents of UV data sets with Sun angles
\zxhlp{LOCIT} fits antenna locations from SN-table data
\zxhlp{LPCAL} Determines instrumental polarization for UV data
\zxhlp{MAPBM} Map \zxhlp{VLA} beam polarization
\zxhlp{MBDLY} Fits multiband delays from IF phases, updates SN table
MFIMG Image of Earth magnetic field model used by \zxhlp{TECOR}
\zxhlp{MINAMPER} specifies the minimum amplitude error prior to some action
\zxhlp{MINANTEN} states minimum number of antennas for a solution
\zxhlp{MINPHSER} specifies the minimum phase error prior to some action
\zxhlp{MOD3D} Computes a 3D CC model from a set of facets
\zxhlp{MSORT} Sort a UV dataset into a specified order
\zxhlp{MULTI} Task to convert single-source to multi-source UV data
\zxhlp{NORMALIZ} specifies the type of gain normaliztion if any
\zxhlp{OMFIT} Fits sources and, optionally, a self-cal model to uv data
\zxhlp{ONEFREQ} states that the current CC model was made with one frequency
\zxhlp{OOCAL} determines antenna complex gain with frequency-dependent models
\zxhlp{OOFRING} Fringe fit data to determine calibration with spectral index options
\zxhlp{OOSRT} Sort a UV dataset into a specified order
\zxhlp{OOSUB} Subtracts/divides a model from/into a uv data base
\zxhlp{PBEAM} Fits the analytic function to the measured values of the beam
\zxhlp{PCABL} Copies the Cable cal values from PC table 1 to PC table n
\zxhlp{PCAL} Determines instrumental polarization for UV data
\zxhlp{PCASS} Finds amplitude bandpass shape from pulse-cal table data
\zxhlp{PCAVG} Averages pulse-cal (PC) tables over time
\zxhlp{PCCOR} Corrects phases using \zxhlp{PCAL} tones data from PC table
\zxhlp{PCDIV} Scales pulse-cal amplitudes by Tsys or Psum
\zxhlp{PCEDT} Interactive TV task to edit pulse-cal (PC) tables
\zxhlp{PCFIT} Finds delays and phases using a pulse-cal (PC) table
\zxhlp{PCFLG} interactive flagging of Pulse-cal data in channel-TB using the TV
\zxhlp{PCLOD} Reads ascii file containing pulse-cal info to PC table.
\zxhlp{PCPLT} Plots pulse-cal tables in 2 dimensions as function of time
\zxhlp{PCRMS} Finds statistics of a pulse-cal table; flags bad times and channels
\zxhlp{PCVEL} shifts spectral-line UV data to a given velocity: planet version
\zxhlp{PDEDT} Interactive TV task to edit polarization D-term (PD) tables
\zxhlp{PDPLT} Plots selected contents of PD tables
\zxhlp{PDVER} specifies the version of the spetral polarization table to use
\zxhlp{PEEK} fits pointing model function to output from the \zxhlp{VLA}
\zxhlp{PEELR} calibrates interfering sources in multi-facet imges
\zxhlp{PHASPRM} Phase data array, by antenna number.
\zxhlp{PIPEAIPS} calibrating amplitude and phase, and imaging \zxhlp{VLA} data
\zxhlp{POLANGLE} Intrinsic polarization angles for up to 30 sources
\zxhlp{POLSN} Make a SN table from cross polarized fringe fit
\zxhlp{PPAPP} Applies Right minus Left phase difference to a 2nd data set
\zxhlp{PRTSY} Task to print statistics from the SY table
\zxhlp{QUFIX} determines Right minus Left phase difference, corrects cal files
\zxhlp{QUOUT} writes text file of Q, U versus frequency to be used by \zxhlp{RLDIF}
\zxhlp{REAMP} Scale visibility amplitudes by IF- or subarray-dependent factor
\zxhlp{REFANT} Reference antenna
\zxhlp{RESEQ} Renumber antennas
\zxhlp{REWGT} modifies UV data re-scaling the weights only
\zxhlp{RFI} Look for \zxhlp{RFI} in uv data
\zxhlp{RLCAL} Determines instrumental right-left phase versus time (a self-cal)
\zxhlp{RLDIF} determines Right minus Left phase difference, corrects cal files
\zxhlp{RLDLY} fringe fit data to determine antenna R-L delay difference
\zxhlp{ROTMEAS} Tells the rotation measure of a source
\zxhlp{SAMPTYPE} Specifies sampling type
\zxhlp{SCIMG} Full-featured imaging plus self-calibration loop with editing
\zxhlp{SCMAP} Imaging plus self-calibration loop with editing
\zxhlp{SDCAL} Task to apply single dish calibration
\zxhlp{SDVEL} shifts spectral-line single-dish data to a given velocity
\zxhlp{SEARCH} Ordered list of antennas for fring searches
\zxhlp{SELBAND} SpecifieS bandwidth of the desired frequency ID
\zxhlp{SELFCAL} Requests self-calibration of calibration sources
\zxhlp{SELFREQ} SpecifieS frequency of desirde frequency ID
\zxhlp{SETJY} Task to enter source info into source (SU) table.
\zxhlp{SHAHO} Flags Holography data for shadowing
\zxhlp{SHOUV} displays uv data in various ways.
\zxhlp{SMODEL} Source model
\zxhlp{SMOTYPE} Specifies smoothing
\zxhlp{SMRATES} Requests smoothing and clipping of rates after \zxhlp{FRING} in pipeline
\zxhlp{SNBLP} Plots selected contents of SN or CL files on a baseline basis
\zxhlp{SNCOR} applies user-selected corrections to the calibration SN table
\zxhlp{SNCORPRM} Task-specific parameters for \zxhlp{SNCOR}.
\zxhlp{SNDUP} copies and duplicates SN table from single pol file to dual pol
\zxhlp{SNEDT} Interactive SN/CL/TY/SY table editor using the TV
\zxhlp{SNFIT} Fits parabola to SN amplitudes and plots result
\zxhlp{SNFLG} Writes flagging info based on the contents of SN files
\zxhlp{SNIFS} Plots selected contents of SN, TY, SY, PC or CL files by IF
\zxhlp{SNP2D} Task to convert SN table single-channel phase to delay
\zxhlp{SNPLT} Plots selected contents of SN, SY, TY, PC or CL files versus time
\zxhlp{SNREF} Chooses best reference antenna to minimize R-L differences
SNRMS Print statistics for selected contents of SN, SY, TY, PC or CL files
\zxhlp{SNSMO} smooths and filters a calibration SN table
\zxhlp{SNVER} specifies the output solution table
\zxhlp{SOLCL} adjust gains for solar data according to nominal sensitivity
\zxhlp{SOLCON} Gain solution constraint factor
\zxhlp{SOLINT} Solution interval
\zxhlp{SOLMIN} Minimum number of solution sub-intervals in a solution
\zxhlp{SOLMODE} Solution mode
\zxhlp{SOLSUB} Solution sub-interval
\zxhlp{SOLTYPE} Solution type
\zxhlp{SOUCODE} Calibrator code for source, not calibrator, selection
\zxhlp{SOUSP} fits source spectral index from SU table or adverbs
\zxhlp{SPCAL} Determines instrumental polzn. for spec. line UV data
\zxhlp{SPECINDX} Spectral index used to correct calibrations
\zxhlp{SPECPARM} Spectral index per polarization per source
\zxhlp{SPECTRAL} Flag to indicate whether an operation is spectral or continuum
\zxhlp{SPECURVE} Spectral index survature used to correct calibrations
\zxhlp{SPFLG} interactive flagging of UV data in channel-TB using the TV
\zxhlp{SPLAT} Applies calibration and splits or assemble selected sources.
\zxhlp{SPLIT} converts multi-source to single-source UV files w calibration
\zxhlp{SY2TY} Task to generate a TY extension file from an \zxhlp{EVLA} SY table
\zxhlp{SYPRT} Task to print values from the SY table
\zxhlp{SYSOL} undoes and re-does nominal sensitivity application for Solar data
\zxhlp{SYVSN} Plots selected SY/TY data with SN solution values versus time
\zxhlp{TASAV} Task to copy all extension tables to a dummy uv or map file
\zxhlp{TAU0} Opacities by antenna number
\zxhlp{TDEPEND} Time-dependent imaging procedure sequence
\zxhlp{TECOR} Calculate ionospheric delay and Faraday rotation corrections
\zxhlp{TECRFILE} Name of file containg TEC data for use in \zxhlp{TECOR}
\zxhlp{TECRTYPE} Type of IONEX file to download in \zxhlp{VLA} and VLBA \zxhlp{TECR} procedures
TEPLT Plots selected contents of TE (\zxhlp{TECOR}) parameter tables
\zxhlp{TIMSMO} Specifiessmoothing times
\zxhlp{TLCAL} Converts JVLA telcal files to an SN file
\zxhlp{TRECVR} Receiver temperatures by polarization and antenna
\zxhlp{TRIANGLE} specifies closure triangles to be selected/deselected
\zxhlp{TRUEP} determines true antenna polarization from special data sets
\zxhlp{TVFLG} interactive flagging of UV data using the TV
\zxhlp{TYAPL} undoes and re-does nominal sensitivity application
\zxhlp{TYCOP} copy TY or SY table calibration between IFs
\zxhlp{TYSMO} smooths and filters a calibration TY or SY table
\zxhlp{TYSMOLEV} Clip level to use in running \zxhlp{TYSMO} on a VLB TY table
\zxhlp{TYVER} specifies the version of the system temperature table used
\zxhlp{UNCAL} sets up tables for uncalibrating Australia Telescope data
\zxhlp{USUBA} Assign subarrays within a uv-data file
\zxhlp{UVCRS} Finds the crossing points of UV-ellipses.
\zxhlp{UVFIT} Fits source models to uv data.
\zxhlp{UVFLG} Flags UV-data
\zxhlp{UVGIT} Fits source models to uv data.
\zxhlp{UVHOL} Prints holography data from a UV data base with calibration
\zxhlp{UVMLN} edits data based on the rms of the spectrum
\zxhlp{UVPRT} prints data from a UV data base with calibration
\zxhlp{UVSRT} Sort a UV dataset into a specified order
\zxhlp{UVSUB} Subtracts/divides a model from/into a uv data base
\zxhlp{VBCAL} Scale visibility amplitudes by antenna based constants
\zxhlp{VHCAL} Do divide by I,Q,U models for linear polarization data
\zxhlp{VHCALIB} Do \zxhlp{CALIB} for linear polarization with I, Q, U models
\zxhlp{VHDIF} find/apply V minus H linear polarization phase difference
VHMOD Compute linear polarization point source model, applies to data
\zxhlp{VLABP} \zxhlp{VLA} antenna beam polarization correction for snapshot images
\zxhlp{VLACALIB} Runs \zxhlp{CALIB} and \zxhlp{LISTR} for \zxhlp{VLA} observation
\zxhlp{VLACLCAL} Runs \zxhlp{CLCAL} and prints the results with \zxhlp{LISTR}
\zxhlp{VLALIST} Runs \zxhlp{LISTR} for \zxhlp{VLA} observation
\zxhlp{VLAMODE} \zxhlp{VLA} observing mode
\zxhlp{VLAMP} Makes \zxhlp{ANTAB} file for phased \zxhlp{VLA} used in VLBI observations
\zxhlp{VLANT} applies \zxhlp{VLA}/\zxhlp{EVLA} antenna position corrections from OPs files
\zxhlp{VLAOBS} Observing program or part of observer’s name
\zxhlp{VLAPROCS} Procedures to simplify the reduction of VLBA data
\zxhlp{VLARESET} Reset calibration tables to a virginal state
\zxhlp{VLARUN} Calibrating amplitude and phase, and imaging \zxhlp{VLA} data
\zxhlp{VLBAAMP} applies a-priori amplitude corrections to VLBA data
\zxhlp{VLBABPSS} computes spectral bandpass correction table
\zxhlp{VLBACALA} applies a-priori amplitude corrections to VLBA data
\zxhlp{VLBACCOR} applies a-priori amplitude corrections to VLBA data
\zxhlp{VLBACPOL} Procedure to calibrate cross-polarization delays
\zxhlp{VLBAEOPS} Corrects Earth orientation parameters
\zxhlp{VLBAFQS} Copies different FQIDS to separate files
\zxhlp{VLBAFRGP} Fringe fit phase referenced data and apply calibration
\zxhlp{VLBAFRNG} Fringe fit data and apply calibration
\zxhlp{VLBAKRGP} Fringe fit phase referenced data and apply calibration
\zxhlp{VLBAKRNG} Fringe fit data and apply calibration
\zxhlp{VLBAMCAL} Merges redundant calibration data
\zxhlp{VLBAMPCL} Calculates and applies manual instrumental phase calibration
\zxhlp{VLBAMPHC} applies \zxhlp{VLBARUN} calibration to additional phase stopping centers
\zxhlp{VLBAPANG} Corrects for parallactic angle
\zxhlp{VLBAPCOR} Calculates and applies instrumental phase calibration
\zxhlp{VLBARFI} Calibrates VLBA autocorrelations, writes out statistics
\zxhlp{VLBARUN} applies amplitude and phase calibration procs to VLBA data
\zxhlp{VLBATECR} Calculate ionospheric delay and Faraday rotation corrections
\zxhlp{VLBAUTIL} Procedures to simplify the reduction of VLBA data
\zxhlp{VLBAWIDE} Calibrates all \zxhlp{VLA} wide-band autocorrelations with \zxhlp{VLBARFI}
\zxhlp{VLBCD} Reads ascii file containing VLBA calibration info into a CD table
\zxhlp{VLBSY} Reads ascii file containing VLBA total power info into an SY table
\zxhlp{VLOG} Pre-process external VLBA calibration files
\zxhlp{WEIGHTIT} Controls modification of weights before gain/fringe solutions
\zxhlp{WETHR} Plots selected contents of WX tables, flags data based on WX
\zxhlp{WRTPROCS} Procedures to simplify the reduction of VLBA data
\zxhlp{WTTHRESH} defines the weight threshold for data acceptance
\zxhlp{WTUV} Specifies the weight to use for UV data outside \zxhlp{UVRANGE}
\zxhlp{WXLOD} Reads KEYIN-format weather information making WX table
\zxhlp{XYDIF} find/apply X minus Y linear polarization phase difference
\zxhlp{XYMOD} Compute linear polarization point source model, applies to data