Index: trunk/psphot/src/psphotEfficiency.c
===================================================================
--- trunk/psphot/src/psphotEfficiency.c	(revision 28013)
+++ trunk/psphot/src/psphotEfficiency.c	(revision 29902)
@@ -512,4 +512,7 @@
     psMetadataAddPtr(readout->analysis, PS_LIST_TAIL, PM_DETEFF_ANALYSIS, PS_META_REPLACE | PS_DATA_UNKNOWN,
                      "Detection efficiency", de);
+    psMetadataAddF32(readout->analysis, PS_LIST_TAIL, "DETEFF.MAGREF", 
+        PS_META_REPLACE, "Magnitude reference", magLim);
+
     psFree(de);