Index: trunk/MagicSoft/include-Classes/MMcFormat/MMcEvtBasic.h
===================================================================
--- trunk/MagicSoft/include-Classes/MMcFormat/MMcEvtBasic.h	(revision 8907)
+++ trunk/MagicSoft/include-Classes/MMcFormat/MMcEvtBasic.h	(revision 9219)
@@ -12,16 +12,17 @@
     enum ParticleId_t
     {
-        kUNDEFINED = -1,
-        kGAMMA     =  1,
-        kPOSITRON  =  2,
-        kELECTRON  =  3,
-        kANTIMUON  =  5,
-        kMUON      =  6,
-        kPI0       =  7,
-        kNEUTRON   = 13,
-        kPROTON  =   14,
-        kHELIUM  =  402,
-        kOXYGEN  = 1608,
-        kIRON    = 5626
+        kUNDEFINED  = -1,
+        kGAMMA      =  1,
+        kPOSITRON   =  2,
+        kELECTRON   =  3,
+        kANTIMUON   =  5,
+        kMUON       =  6,
+        kPI0        =  7,
+        kNEUTRON    = 13,
+        kPROTON   =   14,
+        kHELIUM   =  402,
+        kOXYGEN   = 1608,
+        kIRON     = 5626,
+        kNightSky = 9999
     };
 
@@ -65,4 +66,5 @@
       case kOXYGEN:   return "Oxygen";
       case kIRON:     return "Iron";
+      case kNightSky: return "NSB";
       }
 
@@ -86,4 +88,5 @@
       case kOXYGEN:   return "O";
       case kIRON:     return "Fe";
+      case kNightSky: return "\\gamma_{NSB}";
       }