Index: trunk/psModules/src/imcombine/pmSubtractionEquation.c
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionEquation.c	(revision 19211)
+++ trunk/psModules/src/imcombine/pmSubtractionEquation.c	(revision 19225)
@@ -1105,7 +1105,7 @@
             psFitsClose(fits);
         }
-        {
+        if (stamp->image1) {
             psString filename = NULL;
-            psStringAppend(&filename, "stamp_image_%03d.fits", i);
+            psStringAppend(&filename, "stamp_image1_%03d.fits", i);
             psFits *fits = psFitsOpen(filename, "w");
             psFree(filename);
@@ -1113,5 +1113,13 @@
             psFitsClose(fits);
         }
-        {
+        if (stamp->image2) {
+            psString filename = NULL;
+            psStringAppend(&filename, "stamp_image2_%03d.fits", i);
+            psFits *fits = psFitsOpen(filename, "w");
+            psFree(filename);
+            psFitsWriteImage(fits, NULL, stamp->image2->image, 0, NULL);
+            psFitsClose(fits);
+        }
+        if (stamp->weight) {
             psString filename = NULL;
             psStringAppend(&filename, "stamp_weight_%03d.fits", i);