Log to /var/log/planetstack.log instead of observer.log in current directory.
diff --git a/planetstack/observer/event_loop.py b/planetstack/observer/event_loop.py
index 35dd620..27475ca 100644
--- a/planetstack/observer/event_loop.py
+++ b/planetstack/observer/event_loop.py
@@ -17,7 +17,7 @@
 
 debug_mode = False
 
-logger = Logger(logfile='observer.log', level=logging.INFO)
+logger = Logger(level=logging.INFO)
 
 class StepNotReady(Exception):
     pass