AIPS NRAO AIPS HELP file for FQCENTER in 31DEC18



As of Tue Oct 16 12:13:43 2018



HELP SECTION

FQCENTER
Type: Adverb   (Logical,   > 0  =>  true)
Use:  If True, make the output frequency axis of a UV data set be
      referenced to the frequency channel Nchan/2 + 1 of IF 1.
      If False, leave the frequency reference pixel unchanged, or
      change it to pixel 1.0.
Null Value:  true (1)
Tasks:
   Many tasks which copy data have this option.  A frequency reference
   change requires both a simple change in the UV data set header and
   a scaling of the U,V,W values of each sample by the ratio of the
   new to old reference frequencies.

EXPLAIN SECTION


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