Index: trunk/ippconfig/gpc1/ppStack.config
===================================================================
--- trunk/ippconfig/gpc1/ppStack.config	(revision 41530)
+++ trunk/ippconfig/gpc1/ppStack.config	(revision 42478)
@@ -4,4 +4,5 @@
 
 ZP.AIRMASS      METADATA                # Airmass terms by filter
+	# standard GPC1 photcodes
         g.00000       F32     0.0
         r.00000       F32     0.0
@@ -10,6 +11,21 @@
         y.00000       F32     0.0
         w.00000       F32     0.0
+	# adding GPC2 photcodes for cross-camera stacks
+        g.00002       F32     0.0
+        r.00002       F32     0.0
+        i.00002       F32     0.0
+        z.00002       F32     0.0
+        y.00002       F32     0.0
+        w.00002       F32     0.0
+	# adding generic photcodes for contingency
+        g             F32     0.0
+        r             F32     0.0
+        i             F32     0.0
+        z             F32     0.0
+        y             F32     0.0
+        w             F32     0.0
 END
 ZP.TARGET       METADATA	        # Target zero point by filter
+	# standard GPC1 photcodes
         g.00000       F32     25.0
         r.00000       F32     25.0
@@ -18,4 +34,18 @@
         y.00000       F32     25.0
         w.00000       F32     25.0
+	# adding GPC2 photcodes for cross-camera stacks
+        g.00002       F32     25.0
+        r.00002       F32     25.0
+        i.00002       F32     25.0
+        z.00002       F32     25.0
+        y.00002       F32     25.0
+        w.00002       F32     25.0
+	# adding generic photcodes for contingency
+        g             F32     25.0
+        r             F32     25.0
+        i             F32     25.0
+        z             F32     25.0
+        y             F32     25.0
+        w             F32     25.0
 END