function sxt_postprep_cen,index

;+
;
; NAME
;	sxt_postprep_cen
; PURPOSE
;	To return the IDL CCD coordinates of the center of the sun after
;	realignment with SXT_PREP.  Needed because SXT_CEN only returns the
;	original unshifted sun center coordinates.
; CALLING SEQUENCE
;	xy = sxt_postprep_cen(iout)
; INPUT
;	iout, index structure with history record returned by SXT_PREP
; OUTPUT
;	xy, [x,y] vector with the coordinates of the re-aligned sun.
; HISTORY
;	96-Jan-01 LWA, Simple, one-liner:  -gt_corner(index,/from_sc).
;
;-

xy = -gt_corner(index,/from_sc)
return,xy

end