Index: trunk/ppstamp/src/ppstampOptions.c
===================================================================
--- trunk/ppstamp/src/ppstampOptions.c	(revision 15280)
+++ trunk/ppstamp/src/ppstampOptions.c	(revision 15323)
@@ -17,8 +17,8 @@
 
     options->celestialCenter = false;
-    options->centerX         = NAN;
-    options->centerY         = NAN;
-    options->centerRA        = NAN;
-    options->centerDEC       = NAN;
+    options->centerX         = 0;
+    options->centerY         = 0;
+    options->centerRA        = 0;
+    options->centerDEC       = 0;
     options->celestialRange  = false;
     options->dX   = 0;