HAZI

Example

hazi <<EOD
  srcfile = "/usr/local/vlb/sources.cat"
  stafile = "/usr/local/vlb/stations.cat"
  plotfile = hazi_example.ps/ps
  npxy = 2,1
  listfile = hazi.lis
  source = "0108+388"
  freq = 5010
  dots
  dt = 0.1	! dots every 6 minutes
  noblid noticks ! suppress baseline numbers and tick marks
  stations = "VLBA_SC", "VLBA_HN", "VLBA_NL", "VLBA_FD", "VLBA_LA", "VLBA_PT",
             "VLBA_KP", "VLBA_BR", "VLBA_BR", "VLBA_MK"

  /
  stations = "ONSALA", "BONN", "CRIMEA", "JODRELL", "WSRT", "BOLOGNA",
             "NOTO", "HART", "HSTK", "NRAO", "VLBA_NL", "VLBA_LA", "VLA",
             "OVRO", "HCRK"
  /
  exit
  /
EOD

Parameters

PLOTFILE = "device/type"

Plot device specification in the format required by PGPLOT. Default is no plot.

NPXY = nx, ny

Subdivide pgplot page into nx by ny panels, with one uv-plot per panel. Default is 1,1.

LISTFILE = "filename"

File to receive listing. Default is HAZI.LST. Use LISTFILE="*NOLIST*" to suppress this listing. On VMS systems LISTFILE="SYS$OUTPUT" outputs to the terminal.

STATIONS = "name","name",...

A list of station (antenna) names from the catalog [up to 20].

SOURCES = "name","name",...

A list of source names from the catalog; if only one name is given, the coordinates can be supplied in RA and DEC insteadof the catalog [up to 10].

RA = hh:mm:ss.sss

DEC = dd:mm:ss.ss

If there is only one source, the apparent coordinates can be specified in RA and DEC. If RA and DEC are omitted, or if there is more than one source, the coordinates are found by searching the source catalog.

STAFILE = "file"

The file name of the station catalog. The default is "VLB_STATIONS" which can be a VMS logical name.

SRCFILE = "file"

The file name of the source catalog. The default is "VLB_SOURCES" which can be a VMS logical name. The source catalog is not used if RA and DEC are supplied.

GST = start, stop

Start and stop times in hours, Greenwich Sidereal Time: e.g., GST=22.0,06.5 gives a run of 8.5 hours. If GST is not specified, tracks are calculated for a full 24 hours. In any case the tracks are only drawn where the source is visible from both telescopes.

NUP = number

If NUP is specified, tracks are only drawn for periods when at least NUP telescopes can see the source (default: NUP=2).

FREQ = number

Specify the frequency of observation in MHz. If the frequency is not specified, the graph will be labeled in kilometers instead of wavelengths.

DATE = yy:mm:dd

Date of propsed observation, e.g., DATE=79:5:12 (default: today's date),

PRINT = 1 or 2

If PRINT=1 is specified, a table of HA, ZA, AZ for each telescope will be produced; if PRINT=2 is specified, a table of IHA for each baseline will be produced; if PRINT is specified with no value, both tables will be produced.

TITLE = "text"

Title to be printed at top center of plot, up to 32 characters long.

NOBLID

Suppress baseline labels on plot.

NOINVERT

Suppress plot of conjugate tracks.

NOTICKS

Suppress the tick marks at 1-hr intervals of IHA.

DOTS

Plot dots every DT hours, instead of continuous lines.

DT = number

Sets the resolution (in hours), default=min=0.1; this is the time interval between calculation points, and the interval between dots when DOTS is specified.

UVMAX = number

This can be used to force the scaling of the plot: the region encompassed by the frame of the plot will run from -UVMAX to +UVMAX in both dimensions. If UVMAX is less than the actual maximum of u or v, some of the tracks will not appear on the plot. The units are millions of wavelengths, or kilometers if FREQ is not specified.

LINEWIDTH = n

Use this parameter to draw heavier lines. The default line-width is 1 (0.005 in); values up to 21 are allowed.

FONT = n

Specifies the character font to be used for labelling the graph. The default (1) gives a simple font; other options are 2 (roman), 3 (italic), and 4 (script).

STCODE

Use station codes from the stations catalog for the plot legend instead of full station names.

EXIT

The program restarts until EXIT is specified. It is needed to allow multiple plots in one file.

Catalogs

History