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mostess

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NAME

mostess - Maximum Entropy deconvolution for a mosaiced observation  

PERSON RESPONSIBLE

rjs  

CATEGORIES

deconvolution  

DESCRIPTION

MOSMANY performs a joint maximum entropy deconvolution of a collection of dirty images from a mosaiced experiment.  

PARAMETERS

map
The input dirty maps. No default.
beam
The input dirty beams. No default.
default
Default image name. The default is a flat image.
model
Name of the initial estimate. Default is a flat initial estimate.
out
The name of the output map.
niters
The maximum number of iterations. The default is 30.
measure
The entropy measure to be used, either "gull" (-p*log(p/e)) or "cornwell" (-log(cosh(p)) -- also called the maximum emptiness criteria).
tol
Tolerance of solution. There is no need to change this from the default of 0.01.
q
An estimate of the number of points per beam. MOSMEM can usually come up with a good, image-dependent estimate.
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.

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.
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.


 

Index

NAME
PERSON RESPONSIBLE
CATEGORIES
DESCRIPTION
PARAMETERS

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Time: 18:35:38 GMT, July 05, 2011