### Set General Information

    !
    ! $Id$
    !
    symbol show "pako\show"                     ! abbreviations for show
    symbol sho  "pako\show"
    symbol sh   "pako\show"
    !
    symbol poi  "pako\pointing"                 ! abbreviations for pointing
    symbol po   "pako\pointing"
    symbol p    "pako\pointing"
    !
    !!  set Level     2 4
    set Project   111-22                        ! project ID (project number)
    set PI       "Dr. Jane D. Doe"              ! principal investigator
    set Observer "John Doe"                     !
    set Operator  Pako                          !
    set angleUnit arcsec                        ! angle unit for observing modes
    set Pointing  1.1 2.2                       ! pointing corrections
    set Focus     -2.22                         ! focus correction
    set Topology  low                           ! topology for azimuth
    !
    show                                        ! show the values set with set
    !
    device image  w                             ! open window for plots
    !

To execute this script, simply enter:

    @ demo-set

This first sets some practical abbreviations that avoid confusion with the similar commands in other “languages”, e.g., in GREG.

With the set commands we specify some basic information: the project number, the principal investigator (PI), the names of the observer and telescope operator.

SHOW lists everything previously set with SET.

SET TOPOLOGY deserves special attention: The 30m antenna has azimuth limits of 60 and 460 degrees. Azimuth 360 degrees is due North. Therefore there is an overlap range approximately toward Northeast, which the antenna can reach at a low azimuth 60 to 100 (from the South) or at a high azimuth 400 to 460 (from the North).

SET TOPOLOGY LOW selects to use the azimuth range 60 to 420 degrees

SET TOPOLOGY HIGH selects to use the azimuth range 100 to 460 degrees.

DEVICE is a standard command to open a graphics window for plots. It is used by PAKO to provide a preview plot for some observing modes.