Tool: imager tool for synthesis imaging
Method: imager Construct an imager tool
filename string MeasurementSet to be imaged
compress bool Compress calibration columns?
host string Host on which to run imager
forcenewserver bool Flag to force a new imager client
Method: advise Advise (and optionally use) parameter values
pixels int Number of pixels on a side
cell double Recommended maximum cellsize
facets int Recommended number of facets on one axis
phasecenter MDirection Direction of phase center as a measure
takeadvice bool Use the advised values?
amplitudeloss double Maximum fractional amplitude loss due to faceting
fieldofview double Desired field of view
Method: approximatepsf Calculate approximate point spread functions
model stringArray Names of input models
psf stringArray Names of output point spread functions
async bool Run asynchronously in the background
Method: boxmask Construct a mask image from blc, trc
mask string name of mask image
blc intArray Bottom left corner
trc intArray Top right corner, should be image shape
value double Value to fill in
Method: clean Calculate a deconvolved image with selected clean algorithm
algorithm string Algorithm to use
niter int Number of Iterations, set to zero for no CLEANing
gain double Loop Gain for CLEANing
threshold double Flux level at which to stop CLEANing
displayprogress bool Display the progress of the cleaning?
model stringArray Names of clean model images
keepfixed boolArray Keep one or more models fixed
complist string Name of component list
mask stringArray Names of mask images used for CLEANing
image stringArray Names of restored images
residual stringArray Names of residual images
interactive bool whether to stop clean and interactively mask
npercycle int If interactive is 'T', then no of iter of clean before stopping, usually a fraction of niter
masktemplate string If non empty then will use this image to make the mask the first time
async bool Run asynchronously in the background?
Method: clipimage Zero all pixels where Stokes I is below a threshold
image string name of image
threshold double Threshold
Method: clipvis Flag visibilities where residual exceeds a threshold
threshold double Threshold
Method: close Close the imager tool, with data written on disk, keeping imager process running for future use
Method: correct Correct the MeasurementSet for correctable effects
doparallactic bool Do the correction for parallactic angle?
timestep double Time step for corrections
Method: done Terminate the imager process
Method: exprmask Construct a mask image from a LEL expression
mask string name of mask image
expr double Value to set the mask to. Any scalar or LEL expression
Method: feather Feather together an interferometer and a single dish image in the Fourier plane
image string Name of output feathered image
highres string Name of high resolution (interferometer) image
lowres string Name of low resolution (single dish) image
lowpsf string Name of optional low resolution point spread function
async bool Run asynchronously in the background
Method: filter Apply additional weighting by filtering (u-v taper)
type string Type of filtering or u-v tapering
bmaj double Major axis of filter
bmin double Minor axis of filter
bpa double Position angle of filter
async bool Run asynchronously in the background
Method: fitpsf Fit the point spread function, making psf image first if needed
bmaj double Major axis of beam
bmin double Minor axis of beam
bpa double Position angle of beam
psf string Name of input psf
async bool Run asynchronously in the background
Method: ft Fourier transform the specified model and componentlist
model stringArray Name of image
complist string Name of component list
incremental bool Add to the existing MODEL\_DATA column?
async bool Run asynchronously in the background?
Method: linearmosaic Make a linear mosaic of several images
images stringArray Input images to be mosaiced
mosaic string Output mosaic image
fluxscale string Fluxscale image
sensitivity string Sensitivity image
fieldids intArray output component list after PB has been applied [optional]
usedefaultvp bool Use the default vp type?
vptable string Voltage pattern table from the vpmanager for detailed specification
async bool Run asynchronously in the background
Method: make Make an empty (i.e. blank) image
image string name of output image
async bool Run asynchronously in the background
Method: makeimage Calculate images by gridding, etc.
type string Type of output image
image string Name of output image
compleximage string Name of output complex image
async bool Run asynchronously in the background
Method: makemodelfromsd Make stating model image from a Single Dish image
sdimage string Single Dish image
modelimage string Name of output image to be used as model
sdpsf string PSF of Single Dish if needed
maskimage string mask image
Method: mask Construct a mask image by thresholding an image
image string name of template image
mask string name of mask image
threshold double threshold for mask
async bool Run asynchronously in the background
Method: mem Calculate a deconvolved image with selected mem (maximum entropy) algorithm
algorithm string Algorithm to use
niter int Number of Iterations
sigma double Image sigma to try to achieve
targetflux double Target flux for final image
constrainflux bool Constrain image to match target flux? else targetflux used only to initialize model
displayprogress bool Display the progress of the cleaning?
model stringArray Names of model images
keepfixed boolArray Keep model fixed
complist string Name of component list
prior stringArray Names of mem prior images
mask stringArray Names of mask images (0=>no emission, 1=>emission permitted
image stringArray Names of restored images
residual stringArray Names of residual images
async bool Run asynchronously in the background?
Method: nnls Calculate a deconvolved image using the NNLS algorithm
model stringArray Name of image
keepfixed boolArray Keep model fixed
complist string Name of component list
niter int Number of Iterations, set to zero for no NNLS
tolerance double Tolerance for solution
fluxmask stringArray Name of mask for allowed flux
datamask stringArray Name of mask for constraint pixels in dirty image
image stringArray Names of restored images
residual stringArray Names of restored images
async bool Run asynchronously in the background
Method: open Open a new MeasurementSet, for processing, closing current MeasurementSet
thems string New MeasurementSet to be processed
compress bool Compress calibration columns?
Method: pb Applies or corrects for a primary beam
inimage string Input image to apply beam to
outimage string Output image after beam is applied
incomps string Input Componentlist table name
outcomps string Output Componentlist table name
operation string Operation
pointingcenter MDirection Pointing center for primary beam application
parangle double Parallactic angle for calculation
pborvp string Primary Beam or Voltage Pattern
async bool Run asynchronously in the background
Method: pixon Calculate a deconvolved image with the pixon algorithm ({\em experimental
algorithm string Algorithm to use
sigma double Image sigma to try to achieve
model string Name of model image
async bool Run asynchronously in the background?
Method: plotsummary Plot a summary of field and spectral window ids
Method: plotuv Plot the uv coverage
rotate bool Rotate uvw coordinates to specified phase center?
Method: plotvis Plot the visibility amplitudes as a function of u-v radius (also, see visplot tool
type string Type of plot: can contain all, observed, corrected, model, residual
increment int Increment in points to plot
Method: plotweights Plot the visibility weights as a function of u-v radius
gridded bool Do gridded plot?
increment int Increment in points to plot
Method: regionmask Construct a mask image from a region
mask string name of mask image
region Region Region
value double Value to set the mask to
Method: residual Calculate the residual image with respect to current model and component list
model stringArray Names of input models
complist string Name of component list
image stringArray Names of output residual images
async bool Run asynchronously in the background
Method: restore Calculate the restored image with restored model, component list, and residuals
model stringArray Names of input model
complist string Name of component list
image stringArray Names of output restored images
residual stringArray Names of residual images
async bool Run asynchronously in the background
Method: sensitivity Calculate rms sensitivity
pointsource double Calculated point source sensitivity (Jy/beam)
relative double Calculated relative sensitivity
sumweights double Calculated sum of weights
async bool Run asynchronously in the background
Method: setbeam Set the beam parameters for clean restoration
bmaj double Major axis of beam
bmin double Minor axis of beam
bpa double Position angle of beam
async bool Run asynchronously in the background
Method: setdata Set the data parameters selection for subsequent processing
mode string Type of processing: channel or velocity
nchan intArray Number of channels to select
start intArray Start channels (0-relative)
step intArray Step in channel number
mstart double Start velocity (e.g. '20Km/s')
mstep double Step in velocity (e.g. '100m/s'
spwid intArray Spectral Window Ids (0 relative) to select
fieldid intArray Field Ids (0 relative) to select
msselect string TQL select string applied as a logical "and" with the other selections
async bool Run asynchronously in the background?
Method: setimage Set the image parameters for subsequent processing
nx int Total number of spatial pixels in x
ny int Total number of spatial pixels in y
cellx double Cellsize in x (e.g. '1arcsec')
celly double Cellsize in y (e.g. '1arcsec')
stokes string Stokes parameters to image (e.g. 'IQUV')
doshift bool Use the specified phase center? T or F
phasecenter MDirection Direction of phase center as a measure
shiftx double Shift in x (e.g. '23.7arcsec')
shifty double Shift in y (e.g. '-54.2arcsec')
mode string Type of processing
nchan int Number of channels
start int Start channel (0-relative)
step int Step in channel
mstart MRadialVelocity Start velocity
mstep MRadialVelocity Step in velocity
spwid intArray Spectral Window Ids (0 relative)
fieldid int Field Id (0 relative)
facets int Number of facets on each axis
distance double Distance to object: usually ignore this! (m)
Method: setjy Compute the model visibility for a specified source flux density
fieldid int Field Id (0-relative)
spwid int Spectral Window Id. (0-relative)
fluxdensity doubleArray Specified flux density (I,Q,U,V) in Jy (lookup the value; use 1.0 if not found)
standard string Flux density standard
Method: setmfcontrol Set various cycle control parameters for multi-field and wide-field imageing.
cyclefactor double Cycle threshold = this * max sidelobe * max resid
cyclespeedup double Cycle threshold doubles in this number of iterations
stoplargenegatives int Stop the multiscale cycle for the first n cycles when a negative comp is found on the largest scale
stoppointmode int Stop multiscale altogether if the smallest scale recieves this many consecutive components
minpb double Minimum PB level to use
scaletype string Image plane flux scale type
constpb double In Sault weighting the flux scale is constant above this PB level
fluxscale stringArray Names of flux scale images for mosaicing
Method: setoptions Set some general options for subsequent processing
ftmachine string Fourier transform machine
cache int Size of gridding cache in complex pixels
tile int Size of a gridding tile in pixels (in 1 dimension)
gridfunction string Gridding function
location MPosition Location used in phase rotations
padding double Padding factor in image plane (>=1.0)
usemodelcol bool use MODEL\_DATA column or not
wprojplanes int No of gridding convolution functions used in wproject-ft machine
Method: setscales Set the scale sizes for MultiScale Clean
scalemethod string Method by which scales are set
nscales int Number of scales
uservector doubleArray Vector of scale sizes in pixels to use, defaults should be 0,3,10 0.0 3.0 10.0
Method: setsdoptions Set some options for single dish processing
scale double Scaling applied to single dish data
weight double Weights applied to single dish data
convsupport int number of pixel for convolution support
Method: setvp Set the voltage pattern model for subsequent processing
dovp bool Do voltage pattern (ie, primary beam) correction
usedefaultvp bool Look up the default VP for this telescope and frequency?
vptable string If usedefaultvp is false, provide a VP Table made with vpmanager
dosquint bool Activate the beam squint in the VP model
parangleinc double Parallactice angle increment for squint application
skyposthreshold double Sky position threshold
telescope string Which default telescope to use; if empty use the one in encoded in MS
Method: smooth Calculate an image smoothed with a Gaussian beam
model stringArray Name of input model
image stringArray Name of output smoothed images
usefit bool Use the fitted value (rather than that specified
bmaj double Major axis of beam
bmin double Minor axis of beam
bpa double Position angle of beam
normalize bool Normalize volume of psf to unity
async bool Run asynchronously in the background
Method: stop stop the currently executing function asap
Method: summary Summarize the current state of the imager tool
Method: uvrange Select data within the limit of a given range
uvmin double Minimum uv distance allowed (wavelengths)
uvmax double Maximum uv distance allowed (wavelengths)
Method: weight Apply additional weighting to the visibility weights
type string Type of weighting
rmode string Mode of briggs weighting
noise double Noise used in absolute briggs weighting
robust double Parameter in briggs weighting
fieldofview double Field of view for uniform weighting
npixels int Number of pixels in the u and v directions
mosaic bool Individually weight the fields of a mosaic
async bool Run asynchronously in the background

-- WesYoung - 17 Jul 2006
Topic revision: r1 - 2006-07-17, WesYoung
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