Add warning if temperature is missing

python/lsst/atmospec/spectraction.py

@@ -352,8 +352,13 @@ def setAdrParameters(self, spectrum, exp):
         hourAngle = asCoords.Angle(hourAngle.asDegrees(), unit=u.deg)
 
         weather = vi.getWeather()
+
         _temperature = weather.getAirTemperature()
-        temperature = _temperature if not np.isnan(_temperature) else 10  # maybe average?
+        if _temperature is None or np.isnan(_temperature):
+            self.log.warning("Temperature not set, using nominal value of 10 C")
+            _temperature = 10  # nominal value
+        temperature = _temperature
+
         _pressure = weather.getAirPressure()
         if _pressure is not None and not np.isnan(_pressure):
             if _pressure > 10_000: