Index: trunk/psLib/src/astronomy/psAstrometry.c
===================================================================
--- trunk/psLib/src/astronomy/psAstrometry.c	(revision 2058)
+++ trunk/psLib/src/astronomy/psAstrometry.c	(revision 2061)
@@ -8,6 +8,6 @@
  *  @author George Gusciora, MHPCC
  *
- *  @version $Revision: 1.35 $ $Name: not supported by cvs2svn $
- *  @date $Date: 2004-10-12 20:53:02 $
+ *  @version $Revision: 1.36 $ $Name: not supported by cvs2svn $
+ *  @date $Date: 2004-10-12 21:10:41 $
  *
  *  Copyright 2004 Maui High Performance Computing Center, University of Hawaii
@@ -312,7 +312,7 @@
     // XXX: how is these value derived?
     *(double *)&exp->lst = psTimeToLST((psTime*)time,observatory->longitude);
-    *(float *)&exp->positionAngle = 0.0f;
-    *(float *)&exp->parallacticAngle = 0.0f;
-    *(float *)&exp->airmass = 0.0f;
+    *(float *)&exp->positionAngle = 0.0f; // XXX: need input, see Bug #207
+    *(float *)&exp->parallacticAngle = 0.0f; // XXX: need input, see Bug #207
+    *(float *)&exp->airmass = slaAirmas(zenithDistance);
     *(float *)&exp->parallacticFactor = 0.0f;
     exp->cameraName = NULL;