Wait for telescope data, fix renamed stuff in executable

trackDoppler

@@ -8,13 +8,13 @@ from camrasdevices import LocalOscillator
 
 def main():
     parser = argparse.ArgumentParser(description = "Adjust the frequency of the local oscillator to Doppler track a frequency at the pointing of the telescope")
-    parser.add_argument("-f", "--frequency", help="Frequency to track, default is HI frequency at {}".format(track_hi.freq_hi), default=track_hi.freq_hi, type=float)
+    parser.add_argument("-f", "--frequency", help="Frequency to track, default is HI frequency at {}".format(track_doppler.freq_hi), default=track_doppler.freq_hi, type=float)
 
     args = parser.parse_args()
 
     dt = telescope()
     lo = LocalOscillator()
-    track_doppler.track_frequency(dt, lo, tracking_frequency=args.frequency)
+    track_doppler.track_doppler(dt, lo, tracking_frequency=args.frequency)
 
 if __name__ == '__main__':
     main()

track_doppler.py

@@ -11,8 +11,6 @@ import subprocess
 from telescope import telescope
 from camrasdevices import Receiver, LocalOscillator
 
-import time
-
 freq_hi = 1420.405751 * u.MHz
 
 def doppler_harm(sky_coordinate, time, tracking_frequency, location, variant):
@@ -64,6 +62,7 @@ def track_doppler(dt, lo,
 
     while not exit_event.is_set():
         sky_coordinate = dt.radec
+        if sky_coordinate:
             freq_doppler = doppler_function(sky_coordinate, Time.now(), tracking_frequency, dt_loc)
             dfreq = 1*u.GHz + tracking_frequency - freq_doppler
             lo.frequency = dfreq