[ASTRO\]UV_TRACKS station1 station2 [station3 [...]] [/FRAME [size]]
[/HOUR_ANGLE Hmin [Hmax]] [/TABLE [Name]] [/HORIZON Elmin]
Plot interferometer UV tracks for the most recently called source.
Station coordinates are searched for in the file ASTRO_STATIONS.
Stations should be referred to by a mnemonic (e.g. E03, W00 ...). A
sketch of the interferometer described by ASTRO_STATIONS is also drawn.
Option /FRAME should be used to start a new UV coverage. It clears
the plot, draws the box, and open a new table if /TABLE is present.
Option /HORIZON specify a minimum elevation (in degrees) for the
source.
Option /HOUR_ANGLE can be used to limit the hour angle coverage.
Default is from source rise (above the minimum elevation) to source
setup. Hmin and Hmax are in decimal hours.
Option /TABLE can be used to write the sampling function (UV
coverage) on a UV table for further processing such as producing beams
using the task UV_MAP. Name should be specified only if option /FRAME
has been set.
The box labelling is in meters. A double labelling in kilo wavelengths
is drawn if variable FREQUENCY (observing frequency in GHz) is defined.
Switching to the VLT by the command "OBSERVATORY VLT" defines FREQUENCY
to some 1 micron (300 THz). Some labellings are then in wavelengths
(microns). Switching between files describing interferometer stations
can be done inside ASTRO by redefing the ASTRO_STATIONS logical variable
using the command
SIC LOG ASTRO_STATIONS "path/to/the/desired/file"
The BURE stations are described in the file ephemeris/astro_stations.dat
(and accessed by default on most ASTRO installs, or otherwise by
SIC LOG ASTRO_STATIONS GAG_ASTRO:astro_stations.dat)
The VLT stations are described in the file ephemeris/vlt_stations.dat
(and accessed by
SIC LOG ASTRO_STATIONS GAG_ASTRO:vlt_stations.dat)
The IOTA stations are described in the file ephemeris/iota_stations.dat
(and accessed by
SIC LOG ASTRO_STATIONS GAG_ASTRO:iota_stations.dat)