diff --git a/script/XAS.py b/script/XAS.py
index c8a9491f..7ab3a801 100644
--- a/script/XAS.py
+++ b/script/XAS.py
@@ -7,8 +7,8 @@ SENSORS = (Keithley1, Keithley2, MachineCurrent)
 
 #SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, AuxVoltage, MachineCurrent)
 #SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent, OpticsCameraCentroidX, OpticsCameraSigmaX)
-STARTPOS = (810)
-ENDPOS = (850)
+STARTPOS = (800)
+ENDPOS = (810)
 #NUMPOINTS = 76
 STEPSIZE = 0.1
 LATENCY = 5.0