Index: trunk/psphot/src/psphotMosaicChip.c
===================================================================
--- trunk/psphot/src/psphotMosaicChip.c	(revision 18583)
+++ trunk/psphot/src/psphotMosaicChip.c	(revision 18712)
@@ -21,5 +21,5 @@
     pmChip *inChip = pmFPAviewThisChip(view, in->fpa);
     if (!outChip->hdu && !outChip->parent->hdu) {
-        const char *name = psMetadataLookupStr(&status, in->fpa->concepts, "FPA.NAME"); // Name of FPA
+        const char *name = psMetadataLookupStr(&status, in->fpa->concepts, "FPA.OBS"); // Name of FPA
         pmFPAAddSourceFromView(out->fpa, name, view, out->format);
     }