For a VIRUS IFU field plotted with gstar2, give the Ra,Dec of the user-request IFUSLOT value.

Usage: ds9_rd_ifu 075
arg1 - IFUSLOT value desired (075)
Note: Must have ds9 window from gstar2 run!

% ds9_rd_ifu 075 
12:22:43.093 +01:13:55.10
% ds9_rd_ifu 103 
12:22:32.741 +01:08:29.91
% ds9_rd_ifu boothill 
None None