diff --git a/script/optics/RefocusYRotScan.py b/script/optics/RefocusYRotScan.py
index c3985523..dc08439f 100644
--- a/script/optics/RefocusYRotScan.py
+++ b/script/optics/RefocusYRotScan.py
@@ -8,7 +8,7 @@ set analyser parameters separately!
 import math
 
 # adjust the following parameters
-DISTANCE = 0.2
+DISTANCE = 0.4
 STEPS = 0.005
 LATENCY = 0.5
 ENDSCAN = False