Index: trunk/psphot/src/psphotFindDetections.c
===================================================================
--- trunk/psphot/src/psphotFindDetections.c	(revision 34404)
+++ trunk/psphot/src/psphotFindDetections.c	(revision 34418)
@@ -45,4 +45,10 @@
     psImageMaskType maskVal = psMetadataLookupImageMask(&status, recipe, "MASK.PSPHOT"); // Mask value for bad pixels
     psAssert (maskVal, "missing mask value?");
+
+    // user-defined masks to test for good/bad pixels (build from recipe list if not yet set)
+    psImageMaskType markVal = psMetadataLookupImageMask(&status, recipe, "MARK.PSPHOT"); // Mask value for bad pixels
+    psAssert (markVal, "missing mark value?");
+
+    maskVal |= markVal;
 
     // Use the new pmFootprints approach?