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Basic Information on uvpit
Purpose: Fit polarisation of a time-varying point source.
Categories: uv analysis
UVPIT is a Miriad task which fits visibility data with a time
varying, polarised point source. Optionally the model or
residual visibilities can be written out.
This will work for datasets that contain either all four
linear polarisations, or just the parallel hands.
Name of the input visibility file. No default.
Normal line-type processing with normal defaults. However, you
must select only a single channel!!
Normal data selection. Default is all cross-correlation data.
Initial estimates of the I,Q,U,V flux densities. The default is
Initial estimates of the source offset, in arcsec. The default is
The optional output data-set. The default is not to create an
output data-set. If an output dataset name is given, then
either the model or residual visibilities can be saved.
Extra processing options. Several can be given, separated by commas.
Minimum match is used. Possible values are:
noqu Do not attempt to solve for Stokes-Q and U.
nov Do not attempt to solve for Stokes-V. The default is
to attempt to solve for V if there are XY and YX
noshift Fix the source position.
constant The source does not vary with time. The default is
to assume the source varies with time.
residual The output data-set is the residual visibilities.
If an output is being created, the default is to make
this the fitted model.
Revision: 1.6, 2013/08/30 01:49:21 UTC
Generated by firstname.lastname@example.org on 21 Jun 2016