Fix for python2

telescope.py

@@ -160,7 +160,7 @@ class telescope():
 
         (ra, dec)  = setpoint.to_string('hmsdms').split()
 
-        cmd = bytes('{:s}\t{:s}\n'.format(ra, dec.strip('+')), 'UTF-8')
+        cmd = '{:s}\t{:s}\n'.format(ra, dec.strip('+')).encode('UTF-8')
         logging.info('J2000 setpoint sent to DT: {}'.format(cmd))
         self._outsocket.send(cmd)
 
@@ -180,7 +180,7 @@ class telescope():
         if isinstance(el, u.Quantity):
             el = el.to(u.deg).value
 
-        cmd = bytes('{:f}\t{:f}\n'.format(az, el), 'UTF-8')
+        cmd = '{:f}\t{:f}\n'.format(az, el).encode('UTF-8')
         logging.info('AzEl sent to DT: {}'.format(cmd))
         self._outsocket.send(cmd)
 
@@ -203,7 +203,7 @@ class telescope():
         else:
             off_el = np.deg2rad(off_el)
 
-        cmd = bytes('{:f}\t{:f}\n'.format(off_az, off_el), 'UTF-8')
+        cmd = '{:f}\t{:f}\n'.format(off_az, off_el).encode('UTF-8')
         logging.info('Offset sent to DT: {}'.format(cmd))
         self._offsetsocket.send(cmd)