Index: trunk/Mars/hawc/fresnellens_image.C
===================================================================
--- trunk/Mars/hawc/fresnellens_image.C	(revision 19786)
+++ trunk/Mars/hawc/fresnellens_image.C	(revision 19787)
@@ -49,5 +49,8 @@
     simrays.SetNameReflector("Reflector");
     simrays.SetWavelengthRange(300, 890);
+    // Use this to simulate a diffent number of photons per bunch
     //simrays.SetNumPhotons(100000);
+    // Use this to simulate a point source at distance F
+    //simrays.SetHeight(F/1000);
 
     MPointingPos srcpos("Source");