diff --git a/opencsp/common/lib/cv/spot_analysis/SpotAnalysisOperablesStream.py b/opencsp/common/lib/cv/spot_analysis/SpotAnalysisOperablesStream.py
index 19f842d3..622e3d02 100644
--- a/opencsp/common/lib/cv/spot_analysis/SpotAnalysisOperablesStream.py
+++ b/opencsp/common/lib/cv/spot_analysis/SpotAnalysisOperablesStream.py
@@ -51,7 +51,10 @@ def set_defaults(self, default_support_images: dict[ImageType, CacheableImage],
         default_support_images : dict[ImageType, CacheableImage]
             A dictionary of default support images to be used in the operables.
         default_data : SpotAnalysisOperable
-            Default data to be used in the operables.
+            Additional data that can be assigned as defaults to the generated
+            operables. Includes things that aren't supporting images, such as
+            given_fiducials, found_fiducials, annotations,
+            camera_intrinsics_characterization, light_sources.
         """
         # "ChatGPT 4o-mini" assisted with generating this docstring.
         self.default_support_images = default_support_images