Index: trunk/ppSim/src/ppSimCreate.c
===================================================================
--- trunk/ppSim/src/ppSimCreate.c	(revision 27989)
+++ trunk/ppSim/src/ppSimCreate.c	(revision 29011)
@@ -26,6 +26,22 @@
     }
 
+    assert (config->camera);
+
+    // int nx = psMetadataLookupS32 (&status, config->arguments, "NX.CELL");
+    // if (nx) {
+    //   psMetadata *defaults = psMetadataLookupPtr(&status, config->camera, "DEFAULTS");
+    //   psMetadataLookupS32 (&status, defaults, "CELL.XSIZE");
+    //   psAssert (status, "CELL.XSIZE should be in DEFAULTS");
+    //   psMetadataAddF32(defaults, PS_LIST_TAIL, "CELL.XSIZE", PS_META_REPLACE, "", nx);
+    // }
+    // int ny = psMetadataLookupS32 (&status, config->arguments, "NY.CELL");
+    // if (ny) {
+    //   psMetadata *defaults = psMetadataLookupPtr(&status, config->camera, "DEFAULTS");
+    //   psMetadataLookupS32 (&status, defaults, "CELL.YSIZE");
+    //   psAssert (status, "CELL.YSIZE should be in DEFAULTS");
+    //   psMetadataAddF32(defaults, PS_LIST_TAIL, "CELL.YSIZE", PS_META_REPLACE, "", ny);
+    // }
+
     // generate the fpa structure used by the output camera (determined from INPUT or specified)
-    assert (config->camera);
     fpa = pmFPAConstruct(config->camera, config->cameraName); // FPA to contain the observation
     if (!fpa) {