diff --git a/script/PhotonFluxSpectrum.py b/script/PhotonFluxSpectrum.py
index cddf9647..2e0a8812 100644
--- a/script/PhotonFluxSpectrum.py
+++ b/script/PhotonFluxSpectrum.py
@@ -10,7 +10,7 @@ import time
 
 # G1200 full spectrum
 STARTPOS = (100.0)
-ENDPOS = (120.0)
+ENDPOS = (2000.0)
 STEPS = 25.0
 LATENCY = 5.0
 DWELL = 1.0