AIPS HELP file for UVCMP in 31DEC24
As of Wed Oct 9 4:31:38 2024
UVCMP: Task which converts UV data to compressed format.
INPUTS
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 #.
FQCENTER >= 0 -> center frequency axis
HELP SECTION
UVCMP
Task: This task will convert between normal uv data and compressed
format. Note: this should usually be done to uncalibrated,
multi-source format data as a very few AIPS tasks cannot deal
with compressed data.
Compressed data has only 1 floating word for each correlator
value rather than 3. This means that the weights for all
polarizations, spectral channels, and IFs are forced to be the
same although correct weights (sigma^{-2}) would not be
identical.
Adverbs:
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.
FQCENTER,..> 0 => Change frequency axis reference pixel to
Nchan / 2 + 1
else => do not change reference pixel
EXPLAIN SECTION