Index: trunk/psphot/src/psphotChoosePSF.c
===================================================================
--- trunk/psphot/src/psphotChoosePSF.c	(revision 18323)
+++ trunk/psphot/src/psphotChoosePSF.c	(revision 18555)
@@ -8,11 +8,14 @@
     psTimerStart ("psphot");
 
-    // user-defined masks to test for good/bad pixels (build from recipe list if not yet set)
-    psMaskType maskVal = psMetadataLookupU8(&status, recipe, "MASK.PSPHOT"); // Mask value for bad pixels
+    // bit-masks to test for good/bad pixels
+    psMaskType maskVal = psMetadataLookupU8(&status, recipe, "MASK.PSPHOT");
     assert (maskVal);
 
-    // user-defined masks to test for good/bad pixels (build from recipe list if not yet set)
-    psMaskType mark = psMetadataLookupU8(&status, recipe, "MASK.MARK"); // Mask value for bad pixels
-    assert (mark);
+    // bit-mask to mark pixels not used in analysis
+    psMaskType markVal = psMetadataLookupU8(&status, recipe, "MARK.PSPHOT");
+    assert (markVal);
+
+    // maskVal is used to test for rejected pixels, and must include markVal
+    maskVal |= markVal;
 
     // examine PSF sources in S/N order (brightest first)
@@ -147,5 +150,5 @@
     for (int i = 0; i < modelNames->n; i++) {
         char *modelName = modelNames->data[i];
-        pmPSFtry *try = pmPSFtryModel (stars, modelName, options, maskVal, mark); // Attempt at fit
+        pmPSFtry *try = pmPSFtryModel (stars, modelName, options, maskVal, markVal); // Attempt at fit
         if (!try) {
             // No big deal --- we'll try another model
@@ -321,7 +324,7 @@
             // use pmModelSub because modelFlux has not been generated
             assert (source->maskObj);
-            psImageKeepCircle (source->maskObj, x, y, options->radius, "OR", PM_MASK_MARK);
+            psImageKeepCircle (source->maskObj, x, y, options->radius, "OR", markVal);
             pmModelSub (source->pixels, source->maskObj, source->modelPSF, PM_MODEL_OP_FULL, maskVal);
-            psImageKeepCircle (source->maskObj, x, y, options->radius, "AND", PS_NOT_U8(PM_MASK_MARK));
+            psImageKeepCircle (source->maskObj, x, y, options->radius, "AND", PS_NOT_U8(markVal));
         }