diff --git a/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.cpp b/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.cpp
index 190097aaa..e2fd3fa7b 100644
--- a/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.cpp
+++ b/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.cpp
@@ -21,6 +21,9 @@ postProcessing::postProcessing(): expTime(NULL), ang(NULL), val(NULL), err(NULL)
   //cout << "done "<< endl;
   rawDataReady = 0;
   pRawDataArg = 0; 
+
+  progress_call=0;
+  pProgressCallArg=0;
 #ifdef VERBOSE
   registerDataCallback(&defaultDataReadyFunc,  NULL);
 #endif
@@ -378,6 +381,8 @@ void* postProcessing::processData(int delflag) {
 	    incrementProgress(caught-prevCaught);
 	    prevCaught=caught;
 	    usleep(1000000);
+	    if(progress_call)
+	    	progress_call(getCurrentProgress(),pProgressCallArg);
 	  }
 	  /*
 	    if (dataReady) {
diff --git a/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.h b/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.h
index a9ecf21a2..b346edc29 100644
--- a/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.h
+++ b/slsDetectorSoftware/slsDetectorAnalysis/postProcessing.h
@@ -240,7 +240,7 @@ s
 
   void registerRawDataCallback(int( *userCallback)(double*, int, void*),  void *pArg) {rawDataReady = userCallback; pRawDataArg = pArg;};
   
-
+  void registerProgressCallback(int( *func)(double,void*), void *pArg){progress_call=func; pProgressCallArg=pArg;};
 
   virtual double getRateCorrectionTau()=0;
 
@@ -333,6 +333,9 @@ s
   int (*rawDataReady)(double*,int,void*); 
   void *pRawDataArg; 
   
+  int (*progress_call)(double,void*);
+  void *pProgressCallArg;
+
   
   postProcessingFuncs *ppFun;
   detectorData *thisData;