Make astropy vlsr correction the default

track_doppler.py

@@ -8,6 +8,7 @@ import threading
 
 import subprocess
 
+from vlsr import doppler_frequency
 from telescope import telescope
 from camrasdevices import Receiver, LocalOscillator
 
@@ -38,7 +39,7 @@ def doppler_harm_mb(sky_coordinate, time, tracking_frequency, location):
 
 def track_doppler(dt, lo,
                   tracking_frequency=freq_hi,
-                  doppler_function=doppler_harm_bl,
+                  doppler_function=doppler_frequency,
                   exit_event=None,
                   timeout=0.5):
     """Sets the Local Oscillator to a frequency to correct for Doppler shift. When exit event is