Index: trunk/ippconfig/gpc1/psphot.config
===================================================================
--- trunk/ippconfig/gpc1/psphot.config	(revision 34750)
+++ trunk/ippconfig/gpc1/psphot.config	(revision 34769)
@@ -49,4 +49,14 @@
   DIFF_STATS			    BOOL TRUE	       # Calculate diff-specific stats
   OUTPUT.FORMAT		            STR  PS1_DV2       # Format of output file
+
+  PSPHOT.EXT.NSIGMA.LIMIT	    F32	 0.0
+  PSPHOT.EXT.DIFF.ALTERNATE	    BOOL TRUE
+  PSPHOT.EXT.DIFF.ALTERNATE.THRESH  F32	 1.25
+END
+
+SSTF_DIFF METADATA
+  PSPHOT.EXT.NSIGMA.LIMIT	    F32	 0.0
+  PSPHOT.EXT.DIFF.ALTERNATE	    BOOL TRUE
+  PSPHOT.EXT.DIFF.ALTERNATE.THRESH  F32	 1.25
 END
 
Index: trunk/ippconfig/recipes/psphot.config
===================================================================
--- trunk/ippconfig/recipes/psphot.config	(revision 34750)
+++ trunk/ippconfig/recipes/psphot.config	(revision 34769)
@@ -345,4 +345,6 @@
 PSPHOT.EXT.NSIGMA.LIMIT             F32   3.0  # sources with extNsigma greater that this get tagged as likely extended sources
 PSPHOT.EXT.NSIGMA.MOMENTS           F32   3.0  # sources with extNsigma greater that this get tagged as likely extended sources
+PSPHOT.EXT.DIFF.ALTERNATE	    BOOL  FALSE           # use alternate extended source calculation; designed for diff trails
+PSPHOT.EXT.DIFF.ALTERNATE.THRESH    F32	  1.5		  # threshold for alternate extended source calculations
 PSPHOT.CR.GROW                      S32   1               # Number of pixels to grow CR mask
 PSPHOT.CR.NSIGMA.SOFTEN             F32   0.0025          # Softening parameter for weights