AIPS HELP file for SNDUP in 31DEC22
As of Tue Sep 26 0:56:41 2023
SNDUP: Task which copies single-pol SN entries to dual pol.
INNAME Input UV file name (name)
INCLASS Input UV file name (class)
INSEQ 0.0 9999.0 Input UV file name (seq. #)
INDISK Input UV file disk unit #
INVERS Input table file version no.
OUTNAME Output image name (name)
OUTCLASS Output image name (class)
OUTSEQ -1.0 9999.0 Output image name (seq. #)
OUTDISK 0.0 9.0 Output image disk unit #.
OUTVERS Output table file version.
Task: Task which copies single-pol SN entries to dual pol.
This task is used in dual polarization observations.
When calibration is performed on a single polarization
(say RR) then SNDUP will copy the SN table generated to
a file with either 2 or 4 polarizations. It will copy
the entries from the single polarization SN table to
both RCP and LCP columns in the output SN table.
SNCOR can then be used to correct for any (hopefully
constant) R-L delay and/or phase differences.
Calibrating in this manner makes no assumption about
there being zero Stokes V polarization as would happen
if the calibration was generated using Stokes I.
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.
INVERS.....Version number of table to copy, 0=>highest no.
OUTNAME....Output image name (name). Standard defaults.
OUTCLASS...Output image name (class). Standard defaults.
OUTSEQ.....Output image name (seq. #). 0 => highest unique.
OUTDISK....Disk drive # of output image. 0 => highest disk
number with sufficient space.
OUTVERS....Output version number, 0=> next higher.