diff --git a/scope/client_util/calibrate.py b/scope/client_util/calibrate.py
index afa6507..608b33a 100644
--- a/scope/client_util/calibrate.py
+++ b/scope/client_util/calibrate.py
@@ -31,8 +31,9 @@ def __init__(self, scope, min_exposure_ms=0.5, max_exposure_ms=1000, frames_to_a
         self.exposure_times = []
         with contextlib.ExitStack() as stack:
             # set up all the scope states
-            stack.enter_context(scope.il.in_state(shutter_open=False))
-            stack.enter_context(scope.tl.in_state(shutter_open=False))
+            if hasattr(scope.il, 'shutter_open'):    # Inverted scope doesn't have shutters.
+                stack.enter_context(scope.il.in_state(shutter_open=False))
+                stack.enter_context(scope.tl.in_state(shutter_open=False))
             stack.enter_context(scope.tl.lamp.in_state(enabled=False))
             if hasattr(scope.il, 'spectra'):
                 stack.enter_context(scope.il.spectra.in_state(**{lamp+'_enabled': False for lamp in scope.il.spectra.lamp_specs.keys()}))
@@ -321,4 +322,4 @@ def _smooth_flat_field(image):
     image = image[::2, ::2]
     image = ndimage.median_filter(image, footprint=_m9)
     image = ndimage.zoom(image, 2)
-    return ndimage.gaussian_filter(image, 5)
\ No newline at end of file
+    return ndimage.gaussian_filter(image, 5)
diff --git a/scope/timecourse/timecourse_handler.py b/scope/timecourse/timecourse_handler.py
index a34a931..d64adb3 100644
--- a/scope/timecourse/timecourse_handler.py
+++ b/scope/timecourse/timecourse_handler.py
@@ -153,17 +153,20 @@ def configure_timepoint(self):
             pass
         assert self.scope.nosepiece.magnification == objective
 
-        self.scope.il.shutter_open = True
         self.scope.il.spectra.lamps(**{lamp+'_enabled': False for lamp in self.scope.il.spectra.lamp_specs})
-        self.scope.tl.shutter_open = True
         self.scope.tl.lamp.enabled = False
-        self.scope.tl.condenser_retracted = objective == 5 # only retract condenser for 5x objective
-        if self.TL_FIELD_DIAPHRAGM is not None:
-            self.scope.tl.field_diaphragm = self.TL_FIELD_DIAPHRAGM
-        if self.TL_APERTURE_DIAPHRAGM is not None:
-            self.scope.tl.aperture_diaphragm = self.TL_APERTURE_DIAPHRAGM
-        if self.IL_FIELD_WHEEL is not None:
-            self.scope.il.field_wheel = self.IL_FIELD_WHEEL
+
+        if hasattr(self.scope.il, 'shutter_open'): # For non-inverted scope acquisitions
+            self.scope.il.shutter_open = True
+            self.scope.tl.shutter_open = True
+            self.scope.tl.condenser_retracted = objective == 5 # only retract condenser for 5x objective
+            if self.TL_FIELD_DIAPHRAGM is not None:
+                self.scope.tl.field_diaphragm = self.TL_FIELD_DIAPHRAGM
+            if self.TL_APERTURE_DIAPHRAGM is not None:
+                self.scope.tl.aperture_diaphragm = self.TL_APERTURE_DIAPHRAGM
+            if self.IL_FIELD_WHEEL is not None:
+                self.scope.il.field_wheel = self.IL_FIELD_WHEEL
+
         self.scope.il.filter_cube = self.experiment_metadata['filter_cube']
         self.scope.camera.sensor_gain = '16-bit (low noise & high well capacity)'
         self.scope.camera.readout_rate = self.PIXEL_READOUT_RATE