Index: trunk/psphot/src/psphot.h
===================================================================
--- trunk/psphot/src/psphot.h	(revision 33994)
+++ trunk/psphot/src/psphot.h	(revision 34086)
@@ -61,4 +61,7 @@
 bool            psphotSetMaskAndVarianceReadout (pmConfig *config, const pmFPAview *view, const char *filerule, int index, psMetadata *recipe);
 
+bool            psphotUpdateVariance (pmConfig *config, const pmFPAview *view, const char *filerule);
+bool            psphotUpdateVarianceReadout (pmConfig *config, const pmFPAview *view, const char *filerule, int index, psMetadata *recipe);
+
 bool            psphotModelBackground (pmConfig *config, const pmFPAview *view, const char *filerule);
 bool            psphotModelBackgroundReadoutFileIndex (pmConfig *config, const pmFPAview *view, const char *filerule, int index);
@@ -99,10 +102,5 @@
 
 bool            psphotFitSourcesLinear (pmConfig *config, const pmFPAview *view, const char *filerule, bool final);
-
-# if (HAVE_MODEL_VAR)
 bool            psphotFitSourcesLinearReadout (psMetadata *recipe, pmReadout *readout, psArray *sources, pmPSF *psf, bool final, pmSourceFitVarMode fitVarMode);
-# else
-bool            psphotFitSourcesLinearReadout (psMetadata *recipe, pmReadout *readout, psArray *sources, pmPSF *psf, bool final);
-# endif
 
 bool            psphotSourceSize (pmConfig *config, const pmFPAview *view, const char *filerule, bool getPSFsize);
@@ -489,3 +487,16 @@
 bool psphotSetNFramesReadout (pmConfig *config, const pmFPAview *view, const char *filerule, int index);
 
+bool psphotGenerateModelVariance (pmConfig *config, const pmFPAview *view, pmFPAfile *file, int index, psMetadata *recipe, pmReadout *readout, psArray *sources);
+pmSourceFitVarMode psphotGetFitVarMode (psMetadata *recipe);
+bool psphotFreeModelVariance (pmReadout *readout, psArray *sources);
+
+bool psphotModelBackgroundReadout(psImage *model,  // Model image
+				  psImage *modelStdev, // Model stdev image
+				  psMetadata *analysis, // Analysis metadata for outputs
+				  pmReadout *readout, // Readout for which to generate a background model
+				  psImageBinning *binning, // Binning parameters
+				  const pmConfig *config,// Configuration
+				  bool useVarianceImage
+    );
+
 #endif