Index: trunk/psModules/src/imcombine/pmSubtractionKernels.h
===================================================================
--- trunk/psModules/src/imcombine/pmSubtractionKernels.h	(revision 14533)
+++ trunk/psModules/src/imcombine/pmSubtractionKernels.h	(revision 14671)
@@ -31,4 +31,10 @@
 } pmSubtractionKernels;
 
+/// Generate a delta-function grid for subtraction kernels (like the POIS kernel)
+bool p_pmSubtractionKernelsAddGrid(pmSubtractionKernels *kernels, ///< The subtraction kernels to append to
+                                   int start, ///< Index at which to start appending
+                                   int size ///< Half-size of the grid
+    );
+
 /// General allocator for pmSubtractionKernels
 ///
@@ -44,4 +50,11 @@
 pmSubtractionKernels *pmSubtractionKernelsPOIS(int size, ///< Half-size of the kernel (in both dims)
                                                int spatialOrder ///< Order of spatial variations
+    );
+
+/// Generate ISIS kernels without the flux scaling built in
+pmSubtractionKernels *p_pmSubtractionKernelsRawISIS(int size, ///< Half-size of the kernel
+                                                    int spatialOrder, ///< Order of spatial variations
+                                                    const psVector *fwhms, ///< Gaussian FWHMs
+                                                    const psVector *orders ///< Polynomial order of gaussians
     );