diff --git a/overnight.py b/overnight.py
index 074dc90..6029757 100644
--- a/overnight.py
+++ b/overnight.py
@@ -336,3 +336,64 @@ from time import sleep
 
 
 
+#from epics import PV
+#from time import sleep
+#from datetime import datetime
+
+
+#end_time = datetime(2021, 9, 3, 8, 0, 0, 0)
+
+
+#def overnight():
+#    shutter = PV("SATOP21-OPSH138:REQUEST")
+#
+#    print("open shutter")
+#    shutter.put(1)
+#    sleep(3)
+#
+#    base = "TT_nitrogen_overnight2"
+#
+#    x0 = -14.55
+#    start = x0 - 0.2
+#    stop  = x0 + 0.2
+#    step  = 0.01
+#
+#    n_pulses = 40 * 100
+#
+#    for i in range(1000):
+#        if datetime.now() > end_time:
+#            break
+#
+#        print(i, "sig")
+#        scan.scan1D(exp_delay, start, stop, step, n_pulses, f"{base}_sig_{i:04}", return_to_initial_values=True)
+#
+#        print("close shutter")
+#        shutter.put(0)
+#        sleep(3)
+#
+#        print(i, "bkg")
+#        daq.acquire(f"{base}_bkg_{i:04}", n_pulses=n_pulses)
+#
+#        print("open shutter")
+#        shutter.put(1)
+#        sleep(3)
+#
+#
+#    shutter2 = PV("SATFE10-OPSH066:REQUEST")
+#
+#    print("close both shutters")
+#    shutter.put(0)
+#    shutter2.put(0)
+#    sleep(3)
+            
+
+
+
+
+
+
+
+
+
+
+