Index: branches/eam_branches/psphot.stack.20100120/src/psphotLoadPSF.c
===================================================================
--- branches/eam_branches/psphot.stack.20100120/src/psphotLoadPSF.c	(revision 26691)
+++ branches/eam_branches/psphot.stack.20100120/src/psphotLoadPSF.c	(revision 26748)
@@ -1,6 +1,15 @@
 # include "psphotInternal.h"
 
+// NOTE : pmPSF_IO.c functions must load the psf model onto the chip->analysis metadata because
+// the I/O operation likely occurs before the readout exists.  This implementation assumes that
+// a single psf model is valid for the entire set of readouts (not valid for a time series of readouts)
+
+// XXX for now (2010.01.27), the supporting programs do not define multiple PSPHOT.PSF.LOAD
+// files to go with multiple PSPHOT.INPUT files.  as a result, the implementation below is
+// currently going to work for the case of a single input file, but will fail if we try with a
+// stack of images.
+
 // load an externally supplied psf model
-bool psphotLoadPSFReadout (pmConfig *config, const pmFPAview *view, const char *filename, int index, psMetadata *recipe) {
+bool psphotLoadPSFReadout (pmConfig *config, const pmFPAview *view, const char *filename, int index) {
 
     bool status;
@@ -25,5 +34,5 @@
     }
 
-    if (!psphotPSFstats (readout, recipe, psf)) {
+    if (!psphotPSFstats (readout, psf)) {
 	psAbort("cannot measure PSF shape terms");
     }
@@ -44,9 +53,5 @@
     bool status = false;
 
-    // select the appropriate recipe information
-    psMetadata *recipe  = psMetadataLookupPtr (&status, config->recipes, PSPHOT_RECIPE);
-    psAssert (recipe, "missing recipe?");
-
-    // XXX PSPHOT.PSF.LOAD vs PSPHOT.INPUT??
+    // XXX PSPHOT.PSF.LOAD vs PSPHOT.INPUT -- see note at top
     int num = psMetadataLookupS32 (&status, config->arguments, "PSPHOT.INPUT.NUM");
     psAssert (status, "programming error: must define PSPHOT.INPUT.NUM");
@@ -56,5 +61,5 @@
 
 	// Generate the mask and weight images, including the user-defined analysis region of interest
-	if (!psphotLoadPSFReadout (config, view, "PSPHOT.PSF.LOAD", i, recipe)) {
+	if (!psphotLoadPSFReadout (config, view, "PSPHOT.PSF.LOAD", i)) {
             psError (PSPHOT_ERR_CONFIG, false, "failed to load PSF model for PSPHOT.PSF.LOAD entry %d", i);
 	    return false;