show obscat

Display the observation catalogue. The columns displayed are given in the parameter displist, and can be listed, one to a line, in the file filename if displist = @filename. If displist is blank, the display list defaults to:

INSTRUME
OBJECT 
DATAMODE 
BIT_RATE 
DATE-OBS 
TIME-OBS 
NEVENTS 
EXPOSURE

The show_rows and show_method parameters work as for show event.

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