diff --git a/script/XAS.py b/script/XAS.py
index 9646fe72..64b93281 100644
--- a/script/XAS.py
+++ b/script/XAS.py
@@ -4,10 +4,10 @@ XAS scan
 
 POSITIONERS = (Eph)
 SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent, OpticsCameraCentroidX, OpticsCameraSigmaX)
-STARTPOS = (100.0)
-ENDPOS = (2000.0)
+STARTPOS = (62.5)
+ENDPOS = (1150.0)
 #NUMPOINTS = 76
-STEPSIZE = 25.0
+STEPSIZE = 12.5
 LATENCY = 1.0
 DWELL = 1.0
 ENDSCAN = True # close shutter at end