return None rather than raise exception if headers are missing

GeminiDRSoftware · Jul 20, 2023 · a21f99f · a21f99f
1 parent fd289c9
commit a21f99f
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/gemini_instruments/gmos/adclass.py b/gemini_instruments/gmos/adclass.py
@@ -1003,6 +1003,8 @@ def read_speed_setting(self):
         except KeyError:
             return None
         detector = self.detector_name(pretty=True)
+        if detector is None:
+            return None
         if detector.startswith('Hamamatsu'):
             return 'slow' if ampinteg > 8000 else 'fast'
         else: