Index: trunk/ppSim/src/ppSimLoadStars.c
===================================================================
--- trunk/ppSim/src/ppSimLoadStars.c	(revision 41173)
+++ trunk/ppSim/src/ppSimLoadStars.c	(revision 41397)
@@ -79,4 +79,5 @@
         star->flux = ppSimMagToFlux (star->mag, zp) * expTime;
         star->peak = ppSimStarFluxToPeak (star->flux, seeing);
+	star->external = TRUE; // stars loaded from catalog are external
 
         stars->data[oldSize + i] = star;