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Basic Information on mostess
Task: mostess
Purpose: Maximum Entropy deconvolution for a mosaiced observation
Categories: deconvolution
MOSMANY performs a joint maximum entropy deconvolution of a
collection of dirty images from a mosaiced experiment.
Key: map
The input dirty maps. No default.
Key: beam
The input dirty beams. No default.
Key: default
Default image name. The default is a flat image.
Key: model
Name of the initial estimate. Default is a flat initial estimate.
Key: out
The name of the output map.
Key: niters
The maximum number of iterations. The default is 30.
Key: measure
The entropy measure to be used, either "gull" (-p*log(p/e)) or
"cornwell" (-log(cosh(p)) -- also called the maximum emptiness
criteria).
Key: tol
Tolerance of solution. There is no need to change this from the
default of 0.01.
Key: q
An estimate of the number of points per beam. MOSMEM can usually
come up with a good, image-dependent estimate.
Key: rmsfac
MOSTESS knows the theoretical rms noise of the input dirty maps, and
will, by default, attempt to reduce the residuals to have an rms of
this amount. If the true rms noise is different from the theoretical,
you may give the factor to multiply by to convert from theoretical
to true rms noise.
The theoretical rms will usually be an optimistic estimate of the
true noise level. The true noise will be increased by calibration
errors, confusion, poorly understood distant sidelobes, etc, so
rmsfac will usually give some `fudge factor' greater than 1.
Key: flux
An estimate of the total flux of the source. Giving a good total flux
will help MOSMEM find a good solution. On the other hand, giving
a poor value may do harm. Normally MOSMEM will NOT constrain the
total flux to be this value, but see the ``doflux'' option below.
The default is image-dependent for measure=gull, and zero for
measure=cornwell.
Key: options
Task enrichment parameters. Several can be given, separated by
commas. Minimum match is used. Possible values are:
doflux Constraint the flux to be that given by the "flux"
parameter. Normally the "flux" parameter value is only
used to determine the default image level.
verbose Give lots of messages during the iterations. The default
is to give a one line message at each iteration.