AIPS NRAO AIPS HELP file for CHANNEL in 31DEC19



As of Wed Oct 23 3:55:26 2019



HELP SECTION

CHANNEL
Type:  Adverb  (scalar)
Use:   To set a single, usually spectral, "channel" number, where the
       definition of channel will depend on the particular verb or task.
Null value:
       0   => continuum, all, or 1 depending.
Tasks:
   AVSPC.......Averages uv spectral channels; CHANNEL is number to
               average together
   FRMAP.......Build an image using fringe-rate spectra; CHANNEL is the
               reference channel.
   IMAGR.......Images and Cleans uv data; CHANNEL is the restart
               spectral channel.
   IMERG.......Merges images of different spatial resolutions.
               CHANNEL selects the plane number.
   OOSUB.......Subtracts/divides a model from/into a uv data base
               CHANNEL selects a single channel to be changed.
   PRTSD.......Prints single-dish data.
   PRTUV.......Prints uv data.
   SDLSF.......Least squares fit to channels and subtracts from SD uv
               data.  CHANNEL selects the frequency of the fit to be
               output in a uv data set.
   SPLAT.......Applies calibration and splits or assemble selected
               sources.  CHANNEL sets number spectral channels
               averaged in one of the averaging options.
   UVADC.......Fourier transforms a Clean point model and corrects for
               geometric distortions and adds to a uv data set.
   UVDIF.......Prints differences between two uv data sets.
   UVFND.......Prints data found by various criteria.
   UVLSD.......Fits continuum to uv spectral data and divides by it;
               CHANNEL selects a channel at which the fit is output.
   UVLSF.......Fits continuum to uv spectral data and subtracts it;
               CHANNEL selects a channel at which the fit is output.
   UVMAP.......Fourier transforms uv data to make an image and beam.
   UVPRM.......Measures uv range, total flux, observing time, reference
               antenna from a uv database.
   UVPRT.......Prints uv data, optionally with calibration.
   UVSUB.......Subtracts/divides a model from/into a uv data base.
               CHANNEL selects a single channel to be changed.
   WFCLN.......Images and Cleans uv data; CHANNEL is the restart
               spectral channel.

EXPLAIN SECTION


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