Index: trunk/psModules/src/objects/pmPSF.c
===================================================================
--- trunk/psModules/src/objects/pmPSF.c	(revision 29004)
+++ trunk/psModules/src/objects/pmPSF.c	(revision 31153)
@@ -430,4 +430,9 @@
         return NAN;
     }
+
+    // get the model full-width at half-max
+    float fwhmMajor = 2*model->modelRadius (model->params, 0.5);
+
+# if (0)
     psF32 *params = model->params->data.F32; // Model parameters
     psEllipseAxes axes = pmPSF_ModelToAxes(params, MAX_AXIS_RATIO); // Ellipse axes
@@ -439,3 +444,9 @@
 
     return fwhm;
-}
+# else
+
+    psFree(model);
+
+    return fwhmMajor;
+# endif
+}