Index: trunk/pswarp/src/pswarpDefine.c
===================================================================
--- trunk/pswarp/src/pswarpDefine.c	(revision 12505)
+++ trunk/pswarp/src/pswarpDefine.c	(revision 12523)
@@ -4,22 +4,6 @@
 bool pswarpDefine (pmConfig *config) {
 
-    bool status;
-    psMetadata *recipe = NULL;
-
-    // load the pixel scale from the PSASTRO recipe
-    recipe  = psMetadataLookupPtr (NULL, config->recipes, PSASTRO_RECIPE);
-    if (!recipe) {
-	psError(PSWARP_ERR_CONFIG, false, "Can't find PSASTRO recipe needed for pixel scale!\n");
-	return false;
-    }
-    // physical pixel scale in microns per pixel
-    double pixelScale = psMetadataLookupF32 (&status, recipe, "PSASTRO.PIXEL.SCALE");
-    if (!status) {
-	psError(PS_ERR_IO, false, "Failed to lookup pixel scale"); 
-	return false; 
-    } 
-
     // load the PSWARP recipe
-    recipe  = psMetadataLookupPtr (NULL, config->recipes, PSWARP_RECIPE);
+    psMetadata *recipe = psMetadataLookupPtr (NULL, config->recipes, PSWARP_RECIPE);
     if (!recipe) {
 	psError(PSWARP_ERR_CONFIG, true, "Can't find PSWARP recipe!\n");
@@ -46,14 +30,15 @@
     bool bilevelAstrometry = false;
     if (phu) {
-      char *ctype = psMetadataLookupStr (NULL, phu->header, "CTYPE1");
-      if (ctype) {
-	bilevelAstrometry = !strcmp (&ctype[4], "-DIS");
-      }
+	char *ctype = psMetadataLookupStr (NULL, phu->header, "CTYPE1");
+	if (ctype) {
+	    bilevelAstrometry = !strcmp (&ctype[4], "-DIS");
+	}
     }
     if (bilevelAstrometry) {
-      pmAstromReadBilevelMosaic (skycell->fpa, phu->header, pixelScale);
-      pmAstromReadBilevelChip (chip, hdu->header); 
+	pmAstromReadBilevelMosaic (skycell->fpa, phu->header);
+	pmAstromReadBilevelChip (chip, hdu->header); 
     } else {
-      pmAstromReadWCS (skycell->fpa, chip, hdu->header, pixelScale);
+	// we use a default FPA pixel scale of 1.0
+	pmAstromReadWCS (skycell->fpa, chip, hdu->header, 1.0);
     }