SOURCE

##
SOURCE

            [ASTRO\]SOURCE [name [...]] [/DRAW  [Arg1  ...  ArgN]]  [/ALTERNATE]
        [/SUN] [/FLUX Fmin Fmax] [/RESET] [/DOPPLER] [/CURSOR]
        [ASTRO\]SOURCE /VARIABLE VarName [/ALTERNATE] [/FLUX Fmin Fmax]

        Compute the coordinates of a source from the current catalog (or the al-
        ternate catalog, if the option /ALTERNATE is used). If no name is speci-
        fied,  all  sources  of the catalog are selected. Source coordinates may
        also be directly specified in the command line, in the  same  format  as
        the catalog file. See HELP CATALOG FORMAT for information on the expect-
        ed format The /DRAW option is used to draw the source name on  the  plot
        at its current position (Azimuth, Elevation).

        The  source  coordinates  (azimuth and elevation at time of computation)
        are printed on the screen, as well as the  line-of-sight  components  of
        the following velocities:
          - V(S/OBS)
            Source (S) relative to Observatory
          - V(S/LSR)
            Source  (S)  relative to Local Standard of Rest. This is the LSR ve-
            locity furnished by the observer as part of the source coordinates.
          - V(LSR/G)
            Local Standard of Rest relative to Solar System Barycenter (G)
          - V(G/OBS)
            Solar System Barycenter (G) relative to the Observatory
        All velocities are in km/s, positive if the distance is increasing. With
        the  above  convention,  V(S/OBS)  = V(S/LSR)+V(LSR/G)+V(G/OBS). Coordi-
        nates, velocities, and redshift are written in SIC variables, in the AS-
        TRO%SOURCE%  structure  (just type EXAMINE ASTRO%SOURCE% to get the com-
        plete list).

        The output of the SOURCE command can be modified with the following  op-
        tions:  SOURCE  /SUN  will  also  list  the sun avoidance limits; SOURCE
        /PRINT suppresses the printing of Azimuth, Elevation, and the velocities
        and prints the source properties as in catalog; SOURCE /QUIET suppresses
        all printout (useful to avoid too many messages on the screen in e.g.  a
        loop on many sources).

        SOURCE  /FLUX  Fmin Fmax will select only sources with flux densities in
        the specified range. Marker sizes will be proportional to the (logarithm
        of  the) flux. This is useful to, e.g., filter a list of potential cali-
        brators.

        SOURCE /RESET will nullify all internal source parameters and remove the
        ASTRO%SOURCE%VARIABLE.

Subsections

- SOURCE /DRAW
- SOURCE /VARIABLE
- SOURCE /DOPPLER
- SOURCE /CURSOR