Index: trunk/psastro/src/psastroMaskUpdates.c
===================================================================
--- trunk/psastro/src/psastroMaskUpdates.c	(revision 20724)
+++ trunk/psastro/src/psastroMaskUpdates.c	(revision 20950)
@@ -91,6 +91,8 @@
     }
 
-    double POSANGLE = PM_RAD_DEG * psMetadataLookupF64 (&status, fpa->concepts, "FPA.POSANGLE"); 
-    psAssert (status, "POSANGLE missing");
+    // double POSANGLE = PM_RAD_DEG * psMetadataLookupF64 (&status, fpa->concepts, "FPA.POSANGLE"); 
+    // psAssert (status, "POSANGLE missing");
+    double ROTANGLE = PM_RAD_DEG * psMetadataLookupF64 (&status, fpa->concepts, "FPA.ROTANGLE"); 
+    psAssert (status, "ROTANGLE missing");
 
     // de-activate all files except PSASTRO.INPUT.MASK and PSASTRO.OUTPUT.MASK
@@ -199,5 +201,5 @@
 			float x0, y0, x1, y1, dx, dy;
 
-			float Theta = POSANGLE - REFSTAR_MASK_SATSTAR_POS_ZERO + theta;
+			float Theta = ROTANGLE - REFSTAR_MASK_SATSTAR_POS_ZERO + theta;
 
 			if (REFSTAR_MASK_REGIONS) {