Index: trunk/pswarp/src/pswarpArguments.c
===================================================================
--- trunk/pswarp/src/pswarpArguments.c	(revision 35563)
+++ trunk/pswarp/src/pswarpArguments.c	(revision 42947)
@@ -21,4 +21,5 @@
     fprintf(stderr, "    [-mask mask.fits] : provide a corresponding mask image\n");
     fprintf(stderr, "    [-variance variance.fits] : provide a corresponding variance image\n");
+    fprintf(stderr, "    [-skycell_id skycell_id] : input skycell_id\n");
     psErrorStackPrint(stderr, "\n");
     exit(PS_EXIT_CONFIG_ERROR);
@@ -76,4 +77,11 @@
         psMetadataAddStr(config->arguments, PS_LIST_TAIL, "STATS", PS_DATA_STRING,
                          "Filename for statistics of output image", argv[N]);
+        psArgumentRemove(N, &argc, argv);
+    }
+    // Skycell id
+    if ((N = psArgumentGet(argc, argv, "-skycell_id"))) {
+        psArgumentRemove(N, &argc, argv);
+        psMetadataAddStr(config->arguments, PS_LIST_TAIL, "SKYCELL_ID", PS_DATA_STRING,
+                         "Skycell_id to use", argv[N]);
         psArgumentRemove(N, &argc, argv);
     }