Index: trunk/ippconfig/recipes/ppSub.config
===================================================================
--- trunk/ippconfig/recipes/ppSub.config	(revision 31431)
+++ trunk/ippconfig/recipes/ppSub.config	(revision 31435)
@@ -76,4 +76,6 @@
 INVERSE		BOOL	FALSE		# Generate inverse subtraction?
 PHOTOMETRY	BOOL	FALSE		# Perform photometry?
+NOCONVOLVE      BOOL    FALSE           # Skip convolution?
+
 
 FORCED.PHOTOMETRY.BOTH BOOL FALSE       # forced photometry on input sources?
@@ -141,4 +143,42 @@
  FORCED.PHOTOMETRY.BOTH BOOL    TRUE    # forced photometry on input sources
 END
+
+# Difference of warp - quickstack
+WARPQSTACK	METADATA
+	DUAL		BOOL	TRUE	# Dual convolution?
+	INVERSE		BOOL	FALSE	# Generate inverse subtraction?
+	PHOTOMETRY	BOOL	TRUE	# Perform photometry?
+
+	# penalty of 1.0
+	# DUAL convolution is more sensitive to the number of kernels
+	# do not provide as many orders as for SINGLE
+        # @ISIS.WIDTHS	F32	2.4  5.0  10.0  # Gaussian kernel FWHM values
+	@ISIS.WIDTHS	F32	1.5  3.0  6.0   # Gaussian kernel FWHM values
+	# @ISIS.WIDTHS	F32	2.0  3.0  5.0   # Gaussian kernel FWHM values
+        # @ISIS.WIDTHS	F32	2.1  4.2  8.4   # Gaussian kernel FWHM values
+	@ISIS.ORDERS	S32	2    2    2     # Polynomial orders for ISIS kernels
+
+	SCALE.REF	F32     5.0		# FWHM reference for kernel parameter scaling
+	KERNEL.SIZE     S32	15		# Kernel half-size (pixels)
+	STAMP.FOOTPRINT S32	15		# Size of stamps (pixels)
+END
+
+# Do no convolution
+UNCONVOLVED	METADATA
+	DUAL		BOOL	FALSE	# Dual convolution?
+	INVERSE		BOOL	FALSE   # Generate inverse subtraction?
+	PHOTOMETRY	BOOL	FALSE	# Perform photometry?
+	NOCONVOLVE      BOOL    TRUE
+	CONVOLVE.TARGET STR     SINGLE2	# convolution direction
+END
+
+# Difference of warp - junkstack
+WARPJSTACK      METADATA
+	DUAL		BOOL	FALSE	# Dual convolution?
+	INVERSE		BOOL	FALSE   # Generate inverse subtraction?
+	PHOTOMETRY	BOOL	TRUE	# Perform photometry?
+	CONVOLVE.TARGET STR     SINGLE1	# convolution direction
+END
+
 
 #PR image class
Index: trunk/ippconfig/recipes/reductionClasses.mdc
===================================================================
--- trunk/ippconfig/recipes/reductionClasses.mdc	(revision 31431)
+++ trunk/ippconfig/recipes/reductionClasses.mdc	(revision 31435)
@@ -218,4 +218,18 @@
 END
 
+WARPQSTACK	METADATA
+	DIFF_PPSUB	STR	WARPQSTACK
+	DIFF_PSPHOT	STR	DIFF
+	JPEG_BIN1	STR	PPIMAGE_J1
+	JPEG_BIN2	STR	PPIMAGE_J2
+END
+
+NOCONVDIFF	METADATA
+	DIFF_PPSUB	STR	UNCONVOLVED
+	DIFF_PSPHOT	STR	DIFF
+	JPEG_BIN1	STR	PPIMAGE_J1
+	JPEG_BIN2	STR	PPIMAGE_J2
+END
+
 # reduction classes for different stacks
 # regular stacks