script/templates/ObjectiveScan.py

@@ -0,0 +1,38 @@
+SCAN_RANGE  = [1455.0, 1475.0]
+STEP_SIZE = 0.2
+EXPOSURE_TIME = 1.0
+SETTLING_TIME = 0.1
+
+start = time.time()
+
+objective = microscope.get_child("Objective")
+add_device(objective, True)
+objective.polling=1000
+
+
+class CoefficientOfVariation(Readable):
+    def read(self): 
+        d = image.data
+        ip = load_array(d.array, d.width, d.height)
+        img_stddev = get_measurement(ip, "StdDev")
+        img_mean=  get_measurement(ip, "Mean")
+        try:
+            return img_stddev/img_mean
+        except:
+            return float('nan')
+        
+
+variation = CoefficientOfVariation()
+sensors = [variation]
+
+if not get_dry_run() and str(get_setting("AUTO_SWITCH_VALVE")).lower() == "true":
+    open_vg10()
+
+init_eiger(EXPOSURE_TIME)
+try:
+    lscan(objective, sensors, SCAN_RANGE[0], SCAN_RANGE[1], float(STEP_SIZE), latency=SETTLING_TIME, before_read=trigger_eiger, keep=False)
+finally:
+    if not DRY_RUN and str(get_setting("AUTO_SWITCH_VALVE")).lower() == "true":
+        close_vg10()   
+    restore_eiger()
+    print "Running time: " + str(time.time() - start)