AIPS HELP file for SMODEL in 31DEC26

As of Tue Feb 10 14:19:54 2026

HELP SECTION

SMODEL
Type: Adverb  (REAL(7))
Use:  This model specifies a point source model to use, usually instead
      of a Clean components model.  A non-zero flux density means this
      model is to be used if  appropriate. The elements of SMODEL are
          SMODEL(1) = flux density (Jy)
          SMODEL(2) = X offset in sky (arcsec)
          SMODEL(3) = Y offset in sky (arcsec)
          SMODEL(4) = Model type:
            0 => point model
            1 => elliptical Gaussian and
                 SMODEL(5) = major axis size (arcsec)
                 SMODEL(6) = minor axis size (arcsec)
                 SMODEL(7) = P. A. of major axis (degrees)
            2 => uniform sphere and
                 SMODEL(5) = radius (arcsec)
            3 => uniform sphere and
                 SMODEL(5) = radius (arcsec)

Null Value:  0
      A null value of SMODEL(1) means no model is specified;
      the useage of null values for other parameters depend on
      the application.
Tasks:
   BLCAL.........Compute closure offset corrections.
   BLCHN.........Compute closure offset corrections on a channel-by-
                 channel basis.
   BPASS.........Computes spectral bandpass correction table.
   CALIB.........Determines antenna calibration: complex gain.
   CPASS.........Computes polynomial spectral bandpass correction table.
   EVAUV.........Subtracts & divides a model into UV data, does
                 statistics on results.
   FRING.........Fringe fit data to determine antenna calibration,
                 delay, rate.
   KRING.........Fringe fit data to determine antenna calibration,
                 delay, rate.
   OOSUB.........Subtracts/divides a model from/into a uv data base.
   SCIMG.........Full-featured imaging plus self-calibration loop with
                 editing.
   SCMAP.........Imaging plus self-calibration loop with editing.
   UVADC.........Fourier transforms and corrects a model and adds to uv
                 data.
   UVCON.........Generate sample UV coverage given a user defined array
                 layout.
   UVSUB.........Subtracts/divides a model from/into a uv data base.
Procedures:
   OOCAL.........Determines antenna complex gain with frequency-
                 dependent models.
   OOFRING.......Fringe fit data to determine calibration with spectral
                 index options.
   VLBABPSS......Computes spectral bandpass correction table.

EXPLAIN SECTION