Index: /trunk/ppSub/src/ppSubCamera.c
===================================================================
--- /trunk/ppSub/src/ppSubCamera.c	(revision 41731)
+++ /trunk/ppSub/src/ppSubCamera.c	(revision 41732)
@@ -188,4 +188,43 @@
     altconfig->recipes = psMetadataCopy(NULL, config->recipes); // container for camera-specific recipe values (to be dropped)
 
+    // remove PSCAMERA entries from *-SKYCELL cameras
+    // XXX make this optional to force matching cameras if desired?
+    bool mdok = false;
+    psMetadata *cameras = psMetadataLookupMetadata(&mdok, altconfig->system, "CAMERAS");
+    psAssert(cameras, "missing cameras in system config info");
+    
+    // iterate over the cameras and find ones with names like _*-SKYCELLS
+    // psMetadataIterator *camerasIter = psMetadataIteratorAlloc(cameras, PS_LIST_HEAD, "^_.+-SKYCELL$");
+    psMetadataIterator *camerasIter = psMetadataIteratorAlloc(cameras, PS_LIST_HEAD, NULL);
+    psAssert(camerasIter, "unable to generate iterator?");
+
+    psMetadataItem *camerasItem = NULL; // Item from the metadata
+    while ((camerasItem = psMetadataGetAndIncrement(camerasIter))) {
+      psAssert(camerasItem->type == PS_DATA_METADATA, "camerasItem has invalid type");
+      
+      char *name = camerasItem->name;
+      psAssert (name, "NULL name for item");
+
+      int nameLen = strlen(name);
+      if (name[0] != '_') continue;
+      if (nameLen <= 9) continue;
+      char *p = &name[nameLen - 8];
+      if (strcmp(p, "-SKYCELL")) continue;
+
+      // remove PSCAMERA entries from *-SKYCELL cameras
+      psMetadata *formats = psMetadataLookupMetadata(&mdok, camerasItem->data.md, "FORMATS"); // List of formats
+      psAssert (formats, "missing FORMATS in camera.config ");
+
+      psMetadata *format = psMetadataLookupMetadata(&mdok, formats, "SKYCELL"); // one true format for skycells
+      psAssert (format, "missing SKYCELL metaformat for -SKYCELL entry ");
+
+      psMetadata *rule = psMetadataLookupMetadata(&mdok, format, "RULE"); // one true format for skycells
+      psAssert (rule, "missing RULE in SKYCELL metaformat for -SKYCELL entry ");
+
+      psString pscamera = psMetadataLookupStr(&mdok, rule, "PSCAMERA"); // one true format for skycells
+      if (!pscamera) continue; // already removed, or never supplied
+
+      psMetadataRemoveKey (rule, "PSCAMERA"); // allow any camera skycell to match
+    }
     return (altconfig);
 }
@@ -231,4 +270,13 @@
     pmConfig *refconfig = pmConfigMakeTemp(config);
 
+# if (0)
+    // EAM TEST: can we bind the ref to the input to force the right skycell format?
+    // Reference image
+    pmFPAfile *ref = defineInputFile(&success, config, input, "PPSUB.REF", "REF", PM_FPA_FILE_IMAGE);
+    if (!success) {
+        psError(psErrorCodeLast(), false, "Failed to build FPA from PPSUB.REF");
+        return false;
+    }
+# else
     // Reference image
     pmFPAfile *ref = defineInputFile(&success, refconfig, NULL, "PPSUB.REF", "REF", PM_FPA_FILE_IMAGE);
@@ -237,4 +285,5 @@
         return false;
     }
+# endif
 
     defineInputFile(&success, refconfig, ref, "PPSUB.REF.MASK", "REF.MASK", PM_FPA_FILE_MASK);