AIPS HELP file for UVPOL in 31DEC21
As of Wed Oct 20 16:50:57 2021
UVPOL: Modifies UV data to make complex image and beam
INNAME Input UV file name (name)
INCLASS Input UV file name (class)
INSEQ 0.0 9999.0 Input UV file name (seq. #)
INDISK 0.0 9.0 Input UV file disk unit #
OUTNAME Output UV file name (name)
OUTCLASS Output UV file name (class)
OUTSEQ -1.0 9999.0 Output UV file name (seq. #)
OUTDISK 0.0 9.0 Output UV file disk unit #.
OPCODE 'WEIG', 'DATA'
Task: This task converts a uv data set so that a complex polarization
image and beam can be produced using data in which any of the Stokes'
cross polarizations are measured. With OPCODE = 'WEIG' (or any
unrecognized) all weights are set to the average of the valid weights
and invalid data is zeroed, whenever at least 1 of the
cross-polarizations is valid. OPCODE='DATA'causes any previously
valid data to be set to (1,0) as well as modifying the weights. Q
and U images made from data processed with OPCODE='WEIG' will form
the complex Stokes dirty image and Q and U images made from data
processed with the 'DATA' option will be the complex beam. This task
is best used in conjunction with procedure CXPOLN (use RUN CXPOLN to
load) which will make and properly normalize the complex polarization
NOTE: this task also sets weights and values into the parallel hand
observations. It is not recommended to use the output for imaging
RR, LL, Ipol, or Vpol.
INNAME.....Input UV file name (name). Standard defaults.
INCLASS....Input UV file name (class). Standard defaults.
INSEQ......Input UV file name (seq. #). 0 => highest.
INDISK.....Disk drive # of input UV file. 0 => any.
OUTNAME....Output UV file name (name). Standard defaults.
OUTCLASS...Output UV file name (class). Standard defaults.
OUTSEQ.....Output UV file name (seq. #). 0 => highest unique
OUTDISK....Disk drive # of output UV file. 0 => highest with
space for the file.
OPCODE.....'WEIG' modifies the weights
'DATA' modifies the data =>(1,0) and weights
any other = 'WEIG'