Index: trunk/pswarp/src/pswarpArguments.c
===================================================================
--- trunk/pswarp/src/pswarpArguments.c	(revision 34089)
+++ trunk/pswarp/src/pswarpArguments.c	(revision 34800)
@@ -86,5 +86,6 @@
     pmConfigFileSetsMD (config->arguments, &argc, argv, "MASK", "-mask", "-masklist");
     pmConfigFileSetsMD (config->arguments, &argc, argv, "VARIANCE", "-variance", "-variancelist");
-
+    pmConfigFileSetsMD (config->arguments, &argc, argv, "BACKGROUND", "-background", "-bkglist");
+    
     if (argc != 3) {
         usage();
@@ -164,4 +165,21 @@
     }
 
+    bool doBKG = psMetadataLookupBool(&status,recipe, "BACKGROUND.MODEL"); ///< Generate the warped background model?
+    if (!status) {
+      doBKG = false;
+      psWarning("BACKGROUND.MODEL is not set in the %s recipe -- defaulting to FALSE.", PSWARP_RECIPE);
+    }
+    int bkgXgrid = psMetadataLookupS32(&status,recipe, "BKG.XGRID"); ///< Xsize of background model
+    if (!status) {
+      bkgXgrid = 10;
+      psWarning("BKG.XGRID is not set in the %s recipe -- defaultint to %d.",PSWARP_RECIPE,bkgXgrid);
+    }
+    int bkgYgrid = psMetadataLookupS32(&status,recipe, "BKG.YGRID"); ///< Xsize of background model
+    if (!status) {
+      bkgYgrid = 10;
+      psWarning("BKG.YGRID is not set in the %s recipe -- defaultint to %d.",PSWARP_RECIPE,bkgYgrid);
+    }
+
+    
     // Set recipe values in the recipe (since we've possibly altered some)
     psMetadataAddS32(recipe, PS_LIST_TAIL, "GRID.NX", PS_META_REPLACE,
@@ -176,5 +194,9 @@
                      "Fraction of bad flux for a pixel to be marked as poor", poorFrac);
     psMetadataAddBool(recipe, PS_LIST_TAIL, "PSF", PS_META_REPLACE, "Generate a PSF Model?", PSF);
-
+    psMetadataAddBool(recipe, PS_LIST_TAIL, "BACKGROUND.MODEL", PS_META_REPLACE, "Generate the warped background model?", doBKG);
+    psMetadataAddS32(recipe, PS_LIST_TAIL, "BKG.XGRID", PS_META_REPLACE, "Xsize of background model", bkgXgrid);
+    psMetadataAddS32(recipe, PS_LIST_TAIL, "BKG.YGRID", PS_META_REPLACE, "Ysize of background model", bkgYgrid);
+    
+    
     // Set recipe values in the arguments
     psMetadataAddS32(config->arguments, PS_LIST_TAIL, "GRID.NX", 0,
@@ -189,4 +211,7 @@
                      "Fraction of bad flux for a pixel to be marked as poor", poorFrac);
     psMetadataAddBool(config->arguments, PS_LIST_TAIL, "PSF", PS_META_REPLACE, "Generate a PSF Model?", PSF);
+    psMetadataAddBool(config->arguments, PS_LIST_TAIL, "BACKGROUND.MODEL", PS_META_REPLACE, "Generate the warped background model?", doBKG);
+    psMetadataAddS32(config->arguments, PS_LIST_TAIL, "BKG.XGRID", PS_META_REPLACE, "Xsize of background model", bkgXgrid);
+    psMetadataAddS32(config->arguments, PS_LIST_TAIL, "BKG.YGRID", PS_META_REPLACE, "Ysize of background model", bkgYgrid);
 
     psTrace("pswarp", 1, "Done with pswarpArguments...\n");