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Basic Information on mospsf
Task: mospsf
Purpose: Determine approximate PSF of a mosaic experiment
Categories: map combination
MOSPSF is a MIRIAD task which determines the point spread function
for a linear mosaic of dirty images (as produced by INVERT).
Strictly speaking, the PSF varies with position and frequency.
However if the pointing grid is fairly complete and the individual
synthesised beam patterns are similar, the PSF is reasonably
independent of position. It is also usually a good approximation
that it is independent of frequency.
Key: beam
This gives the name of the input beam-cube (as produced by INVERT).
No default.
Key: out
The name of the output point-spread function. It will be the same size
as the input.
Key: radec
The RA and DEC (either in the form hh:mm:ss,dd:mm:ss or decimals hours
and degrees) at which to compute the point-spread function. The default
is the reference RA,DEC of the beam-cube.
Key: freq
The frequency (in GHz) at which to compute the point-spread function.
The default is the reference frequency of the beam-cube. The
point-spread function is reasonably independent of frequency for most
spectral line observations.