Added condition on masked array

AshDetection/SPT.py

@@ -77,7 +77,7 @@ def SPT_TL_VIEW_ANGLES( Lat, Lon, Height=None,Sat_Lat=None, Sat_Lon=None, Sat_He
     #  Loop over points (Lat/Lon) 
     for ii in range(npoints):
 
-        if math.fabs(Lat[ii]) >= 90:
+        if math.fabs(Lat[ii]) >= 90 or Lat[ii] is np.ma.masked:
             VZA[ii] = 999.99
             VAA[ii] = 999.99
             continue