AIPS HELP file for UVBOX in 31DEC18
As of Tue Jan 16 4:41:57 2018
Type: Adverb (Real)
Use: The radius in cells of the smoothing box used for uniform
weighting. All visibilities within a box of this radius of
a given visibility will be used to compute the weight if
uniform weighting was specified.
For example, UVBOX=0 means that a visibility weight is
determined from the number of visibilities occuring in
the same cell. UVBOX=1 uses the number of visibilities
occuring in the 9 cells centered on the cell in which the
visibility in question occurs; UVBOX=2 uses 25 cells etc.
The actual weight counted depends on the UVBXFN - the
weight can be counted fully or reduced by some function as
it gets farther from the cell on which it is centered. The
size of the cells in the UV plane is set by
1 / (CELLSIZE(i) * UVSIZE(i))
with some correction for units.
Null value: 0 => just use the cell in which the data sample
occurs for weighting
Tasks: several soon to be obsolete tasks, plus
IMAGR.....Fourier transform and Clean UV data with a full
range of calibration, weighting, Cleaning, and
wide-field correction options.