AIPS HELP file for FLUX in 31DEC22

As of Fri Mar 31 19:07:04 2023

HELP SECTION

FLUX
Type:  Adverb  (Real)
Use:   FLUX is a general adverb to express an intensity level associated
       with an image.  For radio maps the unit of FLUX is Jy/beam.  It
       is widely used as a lower limit for Cleaning or for components
       to be included in a source modelor other operation.
Null value:  NONE  (0 means 0)
       Consult the task help file for exact usage.

Verbs:
   IMCENTER......Returns pixel position of sub-image centroid.
   OBITIMAG......Access to OBIT task Imager without self-cal or peeling.
   OBITMAP.......Simplified access to OBIT task Imager.
   OBITPEEL......Access to OBIT task Imager with self-cal and peeling.
   OBITSCAL......Access to OBIT task Imager with self-cal, NOT peeling.
Procedures:
   CXIMAGR.......Grid UV data into a complex image, Fourier transform,
                 Clean.
   DOFARS........Procedure to aid in Faraday rotation synthesis using the
                 FARS task.
   DOOSRO........Calibrating amplitude and phase, and imaging VLA data.
   IMFRING.......Large image delay fitting with IM2CC and OOFRING.
   IMSCAL........Large image self-cal with IM2CC and OOCAL.
   LINIMAGE......Build image cube from multi-IF data set.
   MAPPR.........Simplified access to IMAGR.
   OOCAL.........Determines antenna complex gain with frequency-dependent
                 models.
   OOFRING.......Fringe fit data to determine calibration with spectral
                 index options.
   PIPEAIPS......Calibrating amplitude and phase, and imaging VLA data.
   VLARUN........Calibrating amplitude and phase, and imaging VLA data.
   VLBABPSS......Computes spectral bandpass correction table.
Tasks:
   AGAUS.........Fits 1-dimensional Gaussians to absorption-line spectra.
   ANCAL.........Places antenna-based Tsys and gain corrections in CL
                 table.
   APCLN.........Deconvolves images with CLEAN algorithm.
   BLCAL.........Compute closure offset corrections.
   BLCHN.........Compute closure offset corrections on a
                 channel-by-channel basis.
   BLING.........Find residual rate and delay on individual baselines.
   BOXES.........Adds Clean boxes to BOXFILE around sources from a list.
   BPASS.........Computes spectral bandpass correction table.
   BSCLN.........Hogbom Clean on beam-switched difference image.
   BSMOD.........Creates single-dish UV beam-switched data with model
                 sources.
   BSTST.........Graphical display of solutions to frequency-switched
                 data.
   CALIB.........Determines antenna calibration: complex gain.
   CAPLT.........Plots closure amplitude and model from CC file.
   CCFND.........Prints the contents of a Clean Components extension file.
   CCMOD.........Generates clean components to fit specified source model.
   CCNTR.........Generate a contour plot file from an image with CC or MF
                 plotted.
   CLPLT.........Plots closure phase and model from CC file.
   CPASS.........Computes polynomial spectral bandpass correction table.
   CXCLN.........Complex Hogbom CLEAN.
   EVAUV.........Subtracts & divides a model into UV data, does statistics
                 on results.
   FACES.........Makes images of catalog sources for initial calibration.
   FARS..........Faraday rotation synthesis based on the brightness vs
                 wavelength.
   FIXAL.........Least squares fit aliasing function and remove.
   FRING.........Fringe fit data to determine antenna calibration, delay,
                 rate.
   IBLED.........Interactive BaseLine based visibility EDitor.
   IM2CC.........Task to convert an image to multi-facet Clean Components.
   IM2UV.........Converts an image to a visibility data set.
   IMAGR.........Wide-field and/or wide-frequency Cleaning / imaging task.
   IMFIT.........Fits Gaussians to portions of an image.
   IMMOD.........Adds images of model objects to an image.
   JMFIT.........Fits Gaussians to portions of an image.
   KRING.........Fringe fit data to determine antenna calibration, delay,
                 rate.
   MF2ST.........Task to generate an ST ext. file from Model Fit ext.
                 file.
   MFPRT.........Prints MF tables in a format needed by modelling
                 software.
   MOD3D.........Computes a 3D CC model from a set of facets.
   MODAB.........Makes simple absorption/emission spectral-line image in
                 I/V.
   MODIM.........Adds images of model objects to image cubes in IQU
                 polarization.
   MODSP.........Adds images of model objects to image cubes in I/V
                 polarization.
   MOMFT.........Calculates images of moments of a sub-image.
   MOMNT.........Calculates images of moments along x-axis (vel, freq,
                 ch).
   MTARS.........Compute model inputs to TARS.
   OOSUB.........Subtracts/divides a model from/into a uv data base.
   PCAL..........Determines instrumental polarization for UV data.
   RLCAL.........Determines instrumental right-left phase versus time (a
                 self-cal).
   RMSD..........Calculate rms for each pixel using data in a box around
                 the pixel.
   SAD...........Finds and fits Gaussians to portions of an image.
   SCIMG.........Full-featured imaging plus self-calibration loop with
                 editing.
   SCMAP.........Imaging plus self-calibration loop with editing.
   SDCLN.........Deconvolves image by Clark and then "SDI" cleaning
                 methods.
   SDLSF.........Least squares fit to channels and subtracts from SD uv
                 data.
   SDMOD.........Modifies single-dish UV data with model sources.
   SETFC.........Makes a BOXFILE for input to IMAGR.
   SPIXR.........Fits spectral indexes to each row of an image incl
                 curvature.
   SPMOD.........Modify UV database by adding a model with spectral lines.
   TARS..........Simulation of Faraday rotation synthesis (mainly task
                 FARS).
   TVSAD.........Finds and fits Gaussians to portions of an image with
                 interaction.
   UTESS.........Deconvolves images by maximizing emptiness.
   UVADC.........Fourier transforms and corrects a model and adds to uv
                 data.
   UVCON.........Generate sample UV coverage given a user defined array
                 layout.
   UVLIN.........Fits and removes continuum visibility spectrum, also can
                 flag.
   UVLSD.........Least squares fit to channels and divides the uv data.
   UVLSF.........Least squares fit to channels and subtracts from uv data.
   UVMLN.........Edits data based on the rms of the spectrum.
   UVMOD.........Modify UV database by adding a model incl spectral index.
   UVPRM.........Measures parameters from a UV data base.
   UVSUB.........Subtracts/divides a model from/into a uv data base.
   VPLOT.........Plots uv data and model from CC file.
   VTESS.........Deconvolves sets of images by the Maximum Entropy Method.
   XBASL.........Fits and subtracts nth-order baselines from cube (x
                 axis).
   XGAUS.........Fits 1-dimensional Gaussians to images: restartable.
   XMOM..........Fits one-dimensional moments to each row of an image.
   XPLOT.........Plots image rows one at a time on the graphics or TV
                 screen.
   ZAMAN.........Fits 1-dimensional Zeeman model to absorption-line data.
   ZEMAN.........Fits 1-dimensional Zeeman model to data.

EXPLAIN SECTION