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Make and deconvolve maps starting from a UV table. It combines UV_MAP and CLEAN in a single step.
The mapping process is identical to UV_MAP. It makes a map from UV data by griding the UV data using a convolving function, and then Fast Fourier Transforming the individual channels. However, MX always produces a single beam for all channels, thus neglecting frequency change between channels. MX enables to shift the map center and rotate the image, by shifting the phase tracking center and rotating the UV coordinates of the input UV table.
The CLEAN algorithm is similar to the CLARK method, but with major cycles operating directly on the ungridded UV table rather than in the image plane. Accordingly, aliasing affects only of the residuals, not the clean components. It is thus more accurate but also slower than CLARK as it asks for the gridding step at each major cycle. MX also shares the same limitation as CLARK on large sidelobes.
The user can control the algorithm through SIC variables. New values can be given using "LET VARIABLE value". For ease of use, and whenever it is possible, a sensible value of each parameter will automatically be computed from the context if the value of the corresponding variable is set to its default value, i.e. zero value and empty string. A few variables are initialized to "reasonable" values.
[CLEAN\]CLEAN ?
Will list all main CLEAN_* variables controlling the CLEAN parameters
for the current METHOD.
HELP CLEAN Variables will give a more complete list. HELP CLEAN Variables will give a more complete list.
MX ?
Will list all MAP_* and CLEAN_ * variables controlling the MX parameters.