Make offset work without setpoint

go_to.py

@@ -24,6 +24,7 @@ if __name__ == "__main__":
 
     args = parser.parse_args()
 
+    setpoint = None
     if args.name is not None:
         setpoint = SkyCoord.from_name(args.name)
     elif (args.l is not None) and (args.b is not None):
@@ -33,9 +34,9 @@ if __name__ == "__main__":
 
     if args.scan:
         scansize = args.scansize
-        centersetpoint = setpoint
         sign = -1
-        dt.setRaDec(setpoint)
+        if setpoint is not None:
+            dt.setRaDec(setpoint)
         dt.setOffset((0,0))
         dt.waitUntilThere()
         time.sleep(1)