AIPS HELP file for UVRANGE in 31DEC20
As of Sun Jan 26 0:45:47 2020
Type: Adverb (Real array, 2 elements)
Use: Specify minimum and maximum projected baselines to include.
Units are kilolambda. Before May 2018, this cutoff was applied
in wavelengths at the header frequency. Since the header
frequency is normally in spectral window 1 at the low end of the
spectrum, this cutoff could include data at projected spacings
substantially larger than UVRANGE(2).
In the 2018 release, after May 2018, this option is now applied
using the reference frequency of each spectral window
individually. Therefore, it is now possible that only some of
the spectral windows from a particular visibility sample will be
included. Note that the change of frequency within a spectral
window can still cause some data to be included a little bit
outside the UVRANGE(1) to UVRANGE(2) range.
Null Value: 0
Null value means use all of the data.