AIPS NRAO AIPS HELP file for UVRANGE in 31DEC19



As of Wed Jan 23 16:49:31 2019



HELP SECTION

UVRANGE
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.

EXPLAIN SECTION


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