AIPS HELP file for SNCOP in 31DEC21
As of Fri Sep 17 13:27:14 2021
SNCOP: task to copy some IFs of input SN table to all output
INNAME Input image name (name)
INCLASS Input image name (class)
INSEQ 0.0 9999.0 Input image name (seq. #)
INDISK 0.0 9.0 Input image 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 #.
BOX 0.0 IF ranges to average in input
Task: SNCOP averages specified IFs in an input SN table and writes an
output table with the average real, imaginary, delay, and rate
in all IFs. This has two obvious uses: (1) to propagate good
solutions in some IFs to those IFs damaged by RFI and (2) to
propogate solutions from a data set with some number of IFs to
another data set with a different number of IFs. But you
should pay special attention: SNCOP averages the real part,
averages the imaginary part, etc. If all IFs have amplitude
1.0 but different phases, the the output will NOT have
amplitude 1.0 (and may be rather near 0 even). This task is
not very selective - all IFs in the output file have the same
values equal to the average of the selected IFs from the input.
Task CLCOP allows you substantially more control.
Note that the antennas, source numbers, subarrays, frequency
IDs, etc. in the output file must exactly match those in the
input file. Otherwise, the information conveyed in the output
SN file will be confusing at best.
INNAME.....Input image name (name). Standard defaults.
INCLASS....Input image name (class). Standard defaults.
INSEQ......Input image name (seq. #). 0 => 1.
INDISK.....Disk drive # of input image. 0 => any.
INVERS.....Version number of input SN table, 0 => highest
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.
BOX........List of input IF ranges to average: 0 => all
BOX = I1,I2,I3,I4,I5,I6 averages IFs I1 through I2, I3
through I4, I5 through I6.