diff --git a/script/PhotonFluxSpectrum.py b/script/PhotonFluxSpectrum.py
index 77489345..c6cdbfa9 100644
--- a/script/PhotonFluxSpectrum.py
+++ b/script/PhotonFluxSpectrum.py
@@ -9,9 +9,9 @@ AuxCurrent: not connected
 import time
 
 # G1200 1x1 reference sscan_2264 (elog:114)
-STARTPOS = (260)
-ENDPOS = (310)
-STEPS = 1.0
+STARTPOS = (270.0)
+ENDPOS = (310.0)
+STEPS = 0.5
 LATENCY = 1.0
 DWELL = 1.0