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Basic Information on mfplan
Task: mfplan
Purpose: Determine good frequency setups for multi-frequency synthesis.
Categories: utility
MFPLAN helps determine observing frequencies for multi-frequency
synthesis experiments with the ATCA.
Key: freq
Frequency bands (in GHz) to search for good mfs setups. This consists
of a number of pairs of frequencies, giving the lower and upper
limits on bands appropriate for observing. Several bands will often
be given to avoid frequencies which suffer from interference
or birdies. The nominal frequency bands of the AT receivers are:
1.35,1.78 (L band)
2.20,2.50 (S band)
4.544,6.336 (C band)
8.00,9.20 (X band)
The default is 4.544,6.336.
Key: nfreq
Number of frequencies per configuration. Generally 2 or 4 are
the most usual numbers for the ATCA. Default is 2.
Key: nants
Number of antennae to use. Sensible values are either 5 or 6.
Default is 6.
Key: config
Array configuration. Several values can be given. Valid values are:
3.0a (6.0a), 3.0b (6.0b), 3.0c (6.0c), 3.0d (6.0d), 1.5a, 1.5b,
1.5c, 1.5d, 0.75a, 0.75b, 0.75c, 0.75d, 0.375, 0.122. These correspond
to the 14 standard ATCA configurations.
Key: fixed
List of fixed frequencies that are fixed (not varied) by MFPLAN.
Usually these correspond to frequencies used in completed
observations. The first "nfreq" frequencies will be
associated with the first configuration, the second "nfreq"
frequencies correspond to the second configuration, etc.
The default is that all frequencies are varied.
Key: options
Extra processing options. Several can be given, separated by commas.
Minimum match is used. Possible values are:
no128 Frequencies that are multiples of 128 MHz are to be
avoided. All resulting frequencies are odd multiples
of 64 MHz.
infinity Minimise the worst gap in the uv coverage. The default
is to minimise the rms gap in the uv coverage. The
infinity option is the best option if you have very good
uv coverage. Otherwise it produces poorer results.
colours Plot each configuration with a different colour
Key: device
PGPLOT device. If this is given, then a plot of the u-v coverage
is made. Default is no plot.