Index: trunk/psphot/src/psphotAddNoise.c
===================================================================
--- trunk/psphot/src/psphotAddNoise.c	(revision 21519)
+++ trunk/psphot/src/psphotAddNoise.c	(revision 25383)
@@ -1,13 +1,13 @@
 # include "psphotInternal.h"
 
-bool psphotAddNoise (pmReadout *readout, psArray *sources, psMetadata *recipe) {
+bool psphotAddNoise (pmReadout *readout, const psArray *sources, const psMetadata *recipe) {
   return psphotAddOrSubNoise (readout, sources, recipe, true);
 }
 
-bool psphotSubNoise (pmReadout *readout, psArray *sources, psMetadata *recipe) {
+bool psphotSubNoise (pmReadout *readout, const psArray *sources, const psMetadata *recipe) {
   return psphotAddOrSubNoise (readout, sources, recipe, false);
 }
 
-bool psphotAddOrSubNoise (pmReadout *readout, psArray *sources, psMetadata *recipe, bool add) {
+bool psphotAddOrSubNoise (pmReadout *readout, const psArray *sources, const psMetadata *recipe, bool add) {
 
     bool status = false;
@@ -42,5 +42,5 @@
     PS_ASSERT (status, false);
     if (isfinite(GAIN)) {
-	FACTOR /= GAIN;
+        FACTOR /= GAIN;
     }
 
@@ -70,7 +70,7 @@
         oldshape.sxy = PAR[PM_PAR_SXY];
 
-	// XXX can this be done more intelligently?
-	if (oldI0 == 0.0) continue;
-	if (!isfinite(oldI0)) continue;
+        // XXX can this be done more intelligently?
+        if (oldI0 == 0.0) continue;
+        if (!isfinite(oldI0)) continue;
 
         // increase size and height of source