Index: trunk/ppStack/src/ppStackMatch.c
===================================================================
--- trunk/ppStack/src/ppStackMatch.c	(revision 33093)
+++ trunk/ppStack/src/ppStackMatch.c	(revision 33426)
@@ -7,6 +7,7 @@
 
 // #define TESTING                         // Enable debugging output
-
-#ifdef TESTING
+// #define TESTING_REUSE_CONV		// Enable debugging for re-using convolved outputs from previous run
+
+#ifdef TESTING_REUSE_CONV
 // Read a FITS image
 static bool readImage(psImage **target, // Target for image
@@ -153,5 +154,5 @@
     if (options->convolve) {
         pmReadout *conv = pmReadoutAlloc(NULL); // Conv readout, for holding results temporarily
-#ifdef TESTING
+#ifdef TESTING_REUSE_CONV
         // This is a hack to use the temporary convolved images and kernel generated previously.
         // This makes the 'matching' operation much faster, allowing debugging of the stack process easier.
@@ -394,5 +395,5 @@
             readout->variance = psMemIncrRefCounter(conv->variance);
             readout->covariance = psImageCovarianceTruncate(conv->covariance, COVAR_FRAC);
-#ifdef TESTING
+#ifdef TESTING_REUSE_CONV
         }
 #endif