Index: trunk/ippconfig/recipes/ppStack.config
===================================================================
--- trunk/ippconfig/recipes/ppStack.config	(revision 33252)
+++ trunk/ippconfig/recipes/ppStack.config	(revision 34091)
@@ -83,6 +83,8 @@
 PSF.MODEL	STR	PS_MODEL_GAUSS	# Model for PSF generation
 
-PSF.AUTOSIZE	BOOL	TRUE		# Determine output PSF size from input PSFs?
-PSF.OUTPUT.FWHM	F32	5.0		# Target size for output PSF (if not auto-sized)
+PSF.AUTOSIZE		BOOL	TRUE		# Determine output PSF size from input PSFs?
+PSF.OUTPUT.FWHM         F32     5.0             # Target size for output PSF (if not auto-sized), -1 as mean FWHM inputs 
+PSF.OUTPUT.NFWHMSIG     F32     0.0             # N FWHM-sig to be added to the FWHMmean for PSF
+
 
 PSF.INPUT.MAX           F32  NAN