diff --git a/config/devices.properties b/config/devices.properties
index 67ca6679..9dca92a5 100644
--- a/config/devices.properties
+++ b/config/devices.properties
@@ -105,6 +105,8 @@ ManipulatorCoolFlow=ch.psi.pshell.epics.ChannelDouble|X03DA-PC-BRONKHORST:GET-ME
 ManipulatorCoolFlowSet=ch.psi.pshell.epics.ChannelDouble|X03DA-PC-BRONKHORST:GET-SETPOINT|Read||true
 ps1=ch.psi.pshell.epics.AreaDetector|X03DA-ES-PS1:cam1 X03DA-ES-PS1:image1|||true
 op-ps1=ch.psi.pshell.epics.AreaDetector|X03DA-OP-PS1:cam1 X03DA-OP-PS1:image1|||true
+OpticsCameraCentroidX=ch.psi.pshell.epics.ChannelDouble|X03DA-OP-PS1:Stats2:CentroidX_RBV|Read||true
+OpticsCameraSigmaX=ch.psi.pshell.epics.ChannelDouble|X03DA-OP-PS1:Stats2:SigmaX_RBV|Read||true
 $dummy=ch.psi.pshell.epics.Motor|XXX|||true
 img=ch.psi.pshell.imaging.CameraSource|Scienta|||true
 cam1=ch.psi.pshell.imaging.MjpegSource|http://x03da-cam-1/axis-cgi/mjpg/video.cgi||-200|
diff --git a/script/ExitSlitScan.py b/script/ExitSlitScan.py
index c5a8e1a8..9b79c83a 100644
--- a/script/ExitSlitScan.py
+++ b/script/ExitSlitScan.py
@@ -4,9 +4,9 @@ exit slit test scan
 
 POSITIONERS = (ExitSlit)
 SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent)
-STARTPOS = (200.0)
-ENDPOS = (0.0)
-STEPS = -10.0
+STARTPOS = (0.0)
+ENDPOS = (200.0)
+STEPS = 10.0
 LATENCY = 0.1
 DWELL = 1.0
 
@@ -20,3 +20,9 @@ def trig():
     caput("X03DA-OP-10ADC:TRG.PROC", 1)
 
 lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, before_read=trig, after_read=after_readout)
+
+STARTPOS = (200.0)
+ENDPOS = (0.0)
+STEPS = -10.0
+
+lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPS, LATENCY, before_read=trig, after_read=after_readout)
diff --git a/script/XAS.py b/script/XAS.py
index 15574cd1..9646fe72 100644
--- a/script/XAS.py
+++ b/script/XAS.py
@@ -3,10 +3,11 @@ XAS scan
 """
 
 POSITIONERS = (Eph)
-SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent)
+SENSORS = (SampleCurrent, RefCurrent, AuxCurrent, MachineCurrent, OpticsCameraCentroidX, OpticsCameraSigmaX)
 STARTPOS = (100.0)
 ENDPOS = (2000.0)
-NUMPOINTS = 77
+#NUMPOINTS = 76
+STEPSIZE = 25.0
 LATENCY = 1.0
 DWELL = 1.0
 ENDSCAN = True # close shutter at end
@@ -21,7 +22,7 @@ def trig():
     caput("X03DA-OP-10ADC:TRG.PROC", 1)
 
 try:
-    lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, NUMPOINTS, LATENCY, before_read=trig, after_read=after_readout)
+    lscan(POSITIONERS, SENSORS, STARTPOS, ENDPOS, STEPSIZE, LATENCY, before_read=trig, after_read=after_readout)
 finally:
     if ENDSCAN:
         after_scan()