Index: trunk/ppSim/src/ppSimUtils.c
===================================================================
--- trunk/ppSim/src/ppSimUtils.c	(revision 14798)
+++ trunk/ppSim/src/ppSimUtils.c	(revision 17557)
@@ -8,9 +8,12 @@
                      pmCell *cell)
 {
+    bool mdok;
 
-    float ra0 = psMetadataLookupF32(NULL, config->arguments, "RA"); // Boresight RA (radians)
-    float dec0 = psMetadataLookupF32(NULL, config->arguments, "DEC"); // Boresight Dec (radians)
-    float pa = psMetadataLookupF32(NULL, config->arguments, "PA"); // Position angle (radians)
-    float scale = psMetadataLookupF32(NULL, config->arguments, "SCALE"); // plate scale in arcsec / pixel
+    psMetadata *recipe = psMetadataLookupMetadata(&mdok, config->recipes, PPSIM_RECIPE); // Recipe
+
+    float ra0   = psMetadataLookupF32(NULL, recipe, "RA");  // Boresight RA (radians)
+    float dec0  = psMetadataLookupF32(NULL, recipe, "DEC"); // Boresight Dec (radians)
+    float pa    = psMetadataLookupF32(NULL, recipe, "PA");  // Position angle (radians)
+    float scale = psMetadataLookupF32(NULL, recipe, "SCALE"); // plate scale in arcsec / pixel
     scale *= M_PI / 3600.0 / 180.0; // convert plate scale to radians/pixel
 
@@ -94,5 +97,9 @@
 bool ppSimUpdateConceptsFPA (pmFPA *fpa, pmConfig *config) {
 
-    float expTime = psMetadataLookupF32(NULL, config->arguments, "EXPTIME"); // Exposure time
+    bool mdok;
+
+    psMetadata *recipe = psMetadataLookupMetadata(&mdok, config->recipes, PPSIM_RECIPE); // Recipe
+
+    float expTime = psMetadataLookupF32(NULL, recipe, "EXPTIME"); // Exposure time
 
     const char *filter = psMetadataLookupStr(NULL, config->arguments, "FILTER"); // Filter name
@@ -128,6 +135,10 @@
 bool ppSimUpdateConceptsCell (pmCell *cell, pmConfig *config) {
 
+    bool mdok;
+
+    psMetadata *recipe = psMetadataLookupMetadata(&mdok, config->recipes, PPSIM_RECIPE); // Recipe
+
     int binning = psMetadataLookupS32(NULL, config->arguments, "BINNING"); // Binning in x and y
-    float expTime = psMetadataLookupF32(NULL, config->arguments, "EXPTIME"); // Exposure time
+    float expTime = psMetadataLookupF32(NULL, recipe, "EXPTIME"); // Exposure time
 
     psMetadataAddF32(cell->concepts, PS_LIST_TAIL, "CELL.EXPOSURE", PS_META_REPLACE,