This section gives a complete worked example of producing a customised finding chart. It starts be searching a remote on-line catalogue with catremote (see Section ) to find the list of objects which will produce the chart. The finding chart will show objects in the USNO PMM catalogue within 5 minutes of arc of the radio source PKS 1417-19. Proceed as follows.
catremote name simbad_ns@eso pks1417-19
The object name is entered without spaces and may be in either case (upper or lower). catremote will return the coordinates of the object for epoch and equinox J2000:
Right Ascension: +14:19:50
The Right Ascension is in sexagesimal hours and the Declination in sexagesimal degrees. If you know the coordinates for some equinox other than J2000 then you can use the Starlink utility COCO (see SUN/56) to convert them to the required equinox.
catremote query usno@eso 14:19:50 -19:28:21 5
catremote will respond:
!(Info.) Catalogue usno_eso_141950_m192821.tab written successfully.
and the target list of selected objects will be written to file usno_eso_141950_m192821.tab in your current directory.
and answer the prompts (the prompts are shown on the left and replies on the right):
|GTFILE - Graphics translation file:||/star/share/cursa/usno.grt|
|CATIN - Input target list:||usno_eso_141950_m192821.tab|
|CATOUT - Output graphics attribute list:||usno_plot.txt|
The customised target list will be written to file usno_plot.txt.
Note that the title must be enclosed in quotes and the quotes preceded by a backslash (as shown) to prevent them being interpreted by the Unix shell. Answer the prompts as follows (again prompts to the left, replies to the right):
|GRPHDV - Graphics device:||ps_l|
|GRPLST - Target list:||usno_plot.txt|
The position of PKS 1417-19 will be marked by an open cross. Here the finding chart has been written as a postscript file, called gks74.ps, which may be printed, displayed interactively etc, as desired.
CURSA Catalogue and Table Manipulation Applications