Index: trunk/psModules/src/objects/pmModel.c
===================================================================
--- trunk/psModules/src/objects/pmModel.c	(revision 34498)
+++ trunk/psModules/src/objects/pmModel.c	(revision 36375)
@@ -217,9 +217,11 @@
     // the options allow us to modify various aspects of the model
     if (mode & PM_MODEL_OP_NORM) {
+	// if we are including the sky, renormalizing should force use to normalized down the sky flux
+	params->data.F32[PM_PAR_SKY] /= params->data.F32[PM_PAR_I0];
         params->data.F32[PM_PAR_I0] = 1.0;
     }
     if (!(mode & PM_MODEL_OP_SKY)) {
         params->data.F32[PM_PAR_SKY] = 0.0;
-    }
+    } 
     if (mode & PM_MODEL_OP_CENTER) {
         params->data.F32[PM_PAR_XPOS] = image->col0 + 0.5*image->numCols;