AIPS HELP file for REFREQ in 31DEC26

As of Sat Apr 18 8:06:58 2026

HELP SECTION

REFREQ
Type:  Adverb  (Scalar)
Use:   Specifies the frequency to be used for the reference
Null value:  0 -> found from the data
Tasks:
   HOLOG.........Read & process holography visibility data to telescope
                 images.   REFREQ is the reference in GHz.
   LISPX.........Fits spectral indexes to a list of spectra, allows
                 interactive edit.
   SETFC.........Makes a BOXFILE for input to IMAGR, recommends cell and
                 image sizes.  REFREQ is the reference in GHz when it
                 recommends CELLSIZE, IMSIZE.
   SOUSP.........Fits source spectral index from SU table or adverbs.
                 REFREQ specifies the reference in GHz, 0 -> 1 GHz,
                 < 0 -> data header frequency
   SPIXR.........Fits spectral indexes to each row of an image incl
                 curvature.  REFREQ specifies the reference in GHz,
                 0 -> 1 GHz, < 0 -> data header frequency
   SPXMD.........Adds images of model objects to image cubes in spectral
                 index.
   TVSPX.........Fits spectral indexes to each image row, allows
                 interactive edit.
   TX2IM.........Converts a 1-dimensional text file into cataloged image

EXPLAIN SECTION