diff --git a/script/optics/RefocusYManipulatorZScan.py b/script/optics/RefocusYManipulatorZScan.py
index e1743cae..3b99e3fd 100644
--- a/script/optics/RefocusYManipulatorZScan.py
+++ b/script/optics/RefocusYManipulatorZScan.py
@@ -10,14 +10,14 @@ move manipulator and mirror to center position before start!
 import math
 
 # adjust the following parameters
-STEPS = 60
+STEPS = 0.05
 LATENCY = 0.0
 ENDSCAN = False
 
 MOTOR = (RefocusYTrans, ManipulatorZ)
 SENSORS = (Counts, SampleCurrent, RefCurrent, MachineCurrent, EnergyDistribution, AngleDistribution)
 
-STARTPOS = (8.9, 115.20)
+STARTPOS = (8., 115.20)
 ENDPOS = (9.5, 115.20)
 RELATIVE = False