*= PR requests, + CHANGELOG

CHANGELOG.md

@@ -7,6 +7,10 @@ All notable changes to this project will be documented in this file.
 - ATA has been added to the list of known telescopes.
 
 ### Fixed
+- Bug in the `uvh5._add` method that expected keys which could be
+optional for some phase-center catalog-entry types. This was noticed as an issue when
+adding two uvh5 objects that were of type "sidereal" which did not have "info_source"
+entries in their phase-center catalogs.
 - Bug in the `look_in_catalog` utility function that expected keys which could be
 optional for some phase-center catalog-entry types. This was noticed as an issue when
 adding two uvh5 objects that were of type "sidereal" which did not have "cat_times"

src/pyuvdata/uvdata/uvdata.py

@@ -1397,9 +1397,9 @@ def _consolidate_phase_center_catalogs(
             # match, so this is functionally the same source
             self._update_phase_center_id(match_id, new_id=cat_id)
             # look_in_catalog ignores the "info_source" field, so update it to match
-            info_source = cat_entry.get("info_source")
-            if info_source is not None:
-                self.phase_center_catalog[cat_id]["info_source"] = info_source
+            self.phase_center_catalog[cat_id]["info_source"] = cat_entry.get(
+                "info_source"
+            )
             if ignore_name:
                 # Make the names match if names were ignored in matching
                 self.phase_center_catalog[cat_id]["cat_name"] = cat_entry["cat_name"]