Index: trunk/MagicSoft/Mars/mpointing/MSrcPosFromModel.cc
===================================================================
--- trunk/MagicSoft/Mars/mpointing/MSrcPosFromModel.cc	(revision 5583)
+++ trunk/MagicSoft/Mars/mpointing/MSrcPosFromModel.cc	(revision 5921)
@@ -130,14 +130,19 @@
         conv = fPoint0405;
 
-    MVector3 sky;
-    sky.SetRaDec(fPointPos->GetRaRad(), fPointPos->GetDecRad());
+    TVector2 d;
 
-    // Get current star position (off center)
-    MVector3 vl2 = MAstroSky2Local(*fTime, *fObservatory)*sky;
-    // Get corrected position camera center)
-    TVector3 vl1 = conv->Correct(vl2);
+    if (conv)
+    {
+        MVector3 sky;
+        sky.SetRaDec(fPointPos->GetRaRad(), fPointPos->GetDecRad());
 
-    // Calculate x,y of za2
-    TVector2 d = MAstro::GetDistOnPlain(vl1, vl2, fGeom->GetCameraDist()*1000);
+        // Get current star position (off center)
+        MVector3 vl2 = MAstroSky2Local(*fTime, *fObservatory)*sky;
+        // Get corrected position camera center)
+        TVector3 vl1 = conv->Correct(vl2);
+
+        // Calculate x,y of za2
+        d = MAstro::GetDistOnPlain(vl1, vl2, fGeom->GetCameraDist()*1000);
+    }
 
     // Set Source position