Index: trunk/Ohana/src/addstar/include/addstar.h
===================================================================
--- trunk/Ohana/src/addstar/include/addstar.h	(revision 35579)
+++ trunk/Ohana/src/addstar/include/addstar.h	(revision 37036)
@@ -41,6 +41,7 @@
 
 typedef struct {
-  Average average;
-  Measure measure;
+  Average  average;
+  Measure  measure;
+  Lensing *lensing; // optionally carry out the lensing measurements
   int found;
 } Stars;
@@ -250,10 +251,14 @@
 void       update_coords          PROTO((Average *average, Measure *measure, off_t *next));
 off_t 	  *init_measure_links     PROTO((Average *average, off_t Naverage, Measure *measure, off_t Nmeasure));
+off_t 	  *init_lensing_links     PROTO((Average *average, off_t Naverage, Lensing *lensing, off_t Nlensing));
 off_t 	  *init_missing_links     PROTO((Average *average, off_t Naverage, Missing *missing, off_t Nmissing));
 off_t 	   add_meas_link     	  PROTO((Average *average, off_t *next_meas, off_t Nmeasure, off_t NMEASURE));
 off_t 	   add_miss_link     	  PROTO((Average *average, off_t *next_miss, off_t Nmissing));
+off_t      add_lens_link          PROTO((Average *average, off_t *next_lens, off_t Nlensing, off_t NLENSING));
 off_t 	  *build_measure_links    PROTO((Average *average, off_t Naverage, Measure *measure, off_t Nmeasure));
+off_t     *build_lensing_links    PROTO((Average *average, off_t Naverage, Lensing *lensing, off_t Nlensing));
 Measure   *sort_measure     	  PROTO((Average *average, off_t Naverage, Measure *measure, off_t Nmeasure, off_t *next_meas));
 Missing   *sort_missing     	  PROTO((Average *average, off_t Naverage, Missing *missing, off_t Nmissing, off_t *next_miss));
+Lensing   *sort_lensing           PROTO((Average *average, off_t Naverage, Lensing *lensing, off_t Nlensing, off_t *next_lens));
 int        ImageOptions		  PROTO((AddstarClientOptions *options, Image *images, off_t Nimages));
 int        GetFileMode		  PROTO((Header *header));