fixes

focus_sequence_FLI.py

@@ -41,7 +41,7 @@ def get_image(filename, exp_time):
 
 if __name__ == "__main__":
     parser = ap.ArgumentParser(
-        prog=sys.argv[1],
+        prog=sys.argv[0],
         description="FLI CCD and focuser hardware: focussing sequence implementation. It is assumed that 'fli_control' software is installed in the OS.",
     )