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Basic Information on uvpnt
Task: uvpnt
Purpose: Create closely spaced uv-data from multiple pointings.
Categories: uv analysis
UVPNT creates closely spaced uv-data from multiple pointings
using the Ekers and Rots algorithm.
Only one polarization is handled at a time.
*** NEW TASK - PLEASE REPORT COMMENTS AND BUGS ***
Key: vis
The name of the input uv data sets. Several can be given (wild
cards are supported). No default.
Key: select
The normal uv selection commands. The default processes everything.
Key: line
The normal uv linetype in the form:
line,nchan,start,width,step
The default is all channels (or all wide channels if there are no
spectral channels). The output will consist of only spectral or
wideband data (but not both).
Key: ref
The normal reference linetype, in the form:
line,start,width
The default is no reference line.
Key: interval
Time averaging interval, in minutes. Sufficient time should be
given to cycle through all the pointings. The default is 60 min.
Key: options
This gives extra processing options. Several options can be given,
each separated by commas. They may be abbreivated to the minimum
needed to avoid ambiguity. Possible options are:
'nocal' Do not apply the gains file. By default, UVPNT
applies the gains file in copying the data.
'nopass' Do not apply bandpass corrections. By default,
UVPNT corrects for the bandpass shape if the
required information is available.
'nopol' Do not apply polarization corrections. By default
UVPNT corrects for polarization corss-talk.
Key: nuv
Two values specify the number of uv-data samples in the directions
of u and v, sampled at intervals of 2D/(nuv+1) where D is the
telescope diameter obtained from the 'telescop' uv-variable for
each baseline. E.g. nuv=3,5 samples the data at du = -D/2, 0, +D/2
dv = -2D/3, -D/3, 0, +D/3, +2D/3. The default nuv=3,3. If only one
value is given, it is used for both u and v directions.
Key: out
The name of the output uv data set. No default.