Index: trunk/Mars/hawc/fresnellens_traceray.C
===================================================================
--- trunk/Mars/hawc/fresnellens_traceray.C	(revision 19933)
+++ trunk/Mars/hawc/fresnellens_traceray.C	(revision 19934)
@@ -35,4 +35,9 @@
     const double H = 0.25;   // [cm] Width of a single groove
     const double w = 0.01;   // [cm] Width of a single groove
+
+    // For a well visible structure, use instead
+    //const double H = 2.5;   // [cm] Width of a single groove
+    //const double w = 1.0;   // [cm] Width of a single groove
+
     //const double w = 1;        // [cm] Width of a single groove
     //const double H = 2.5;    // [cm] Thickness of lens