diff --git a/csaxs_bec/device_configs/simulated_omny/simulated_flomni.yaml b/csaxs_bec/device_configs/simulated_omny/simulated_flomni.yaml
index 6e4e185..32b7db8 100644
--- a/csaxs_bec/device_configs/simulated_omny/simulated_flomni.yaml
+++ b/csaxs_bec/device_configs/simulated_omny/simulated_flomni.yaml
@@ -130,6 +130,9 @@ foptx:
     #170 micron, 60 nm
     in: -13.831
     out: -13.831
+    fzp_diameter: 170              # microns
+    fzp_outermost_zone_width: 60   # nm
+    detector_distance: -1          # mm, sample-to-detector; unknown for now
   deviceTags:
     - simulated_flomni
 
diff --git a/csaxs_bec/device_configs/simulated_omny/simulated_lamni.yaml b/csaxs_bec/device_configs/simulated_omny/simulated_lamni.yaml
index f4c39a4..ab07a1e 100644
--- a/csaxs_bec/device_configs/simulated_omny/simulated_lamni.yaml
+++ b/csaxs_bec/device_configs/simulated_omny/simulated_lamni.yaml
@@ -74,6 +74,10 @@ loptx:
   userParameter:
     in: -0.244
     out: -0.699
+    # 170 micron, 60 nm
+    fzp_diameter: 170              # microns
+    fzp_outermost_zone_width: 60   # nm
+    detector_distance: -1          # mm, sample-to-detector; unknown for now
   deviceTags:
     - simulated_lamni
 lopty: