Add an aim to a space ship simulator

Hi All! I have a big problem: i need to add an aim that really point to objects in a 3d space attached to my spaceship. The scene is composed by:

• GameObject "SpaceShip" with attached script "SchipController";

• Its child "SphipMesh;

• another child "Shooter" with the script "Shooting" attached;

And the main camera with the script "SmoothFollow" attached with target set to SpaceShip.

Here are the scripts: "ShipController" (JS):

 var turnspeed = 5.0;
 var speed = 5.0;
 private var trueSpeed = 0.0;
 var strafeSpeed = 5.0;
 
 function Update () {
 
     var roll = Input.GetAxis ("Roll");
     var pitch = Input.GetAxis ("Pitch");
     var yaw = Input.GetAxis ("Yaw");
     var strafe = Vector3 (Input.GetAxis ("Horizontal") * strafeSpeed * Time.deltaTime, Input.GetAxis ("Vertical") * strafeSpeed * Time.deltaTime, 0);
     
     var power = Input.GetAxis ("Power");
     
     //Truespeed controls
     
     if (trueSpeed < 10 && trueSpeed > -3) {
         trueSpeed += power;
     }
 
     if (trueSpeed > 10) { 
         trueSpeed = 9.99;    
     }
 
     if (trueSpeed < -3) {
         trueSpeed = -2.99;    
     }
 
     if (Input.GetKey ("backspace")) {    
         trueSpeed = 0;
     }
     
     rigidbody.AddRelativeTorque (pitch * turnspeed * Time.deltaTime, yaw * turnspeed * Time.deltaTime, roll * turnspeed * Time.deltaTime);
     rigidbody.AddRelativeForce (0, 0, trueSpeed * speed * Time.deltaTime);
     rigidbody.AddRelativeForce (strafe);
 }

"Shooting" (C#):

 using UnityEngine;
 using System.Collections;
 
 public class Shooting : MonoBehaviour {
 
     public Rigidbody plasma;
     public Transform plasmaFlash;
     public AudioClip plasmaShootFx;
 
     void Update () {
 
         if (Input.GetKeyDown (KeyCode.Space)) {    
 
             Rigidbody clone;
             clone = Instantiate (plasma, transform.position, Quaternion.Euler (0, 90, 90)) as Rigidbody;
             clone.velocity = transform.TransformDirection (Vector3.forward * 800);
             
             Instantiate (plasmaFlash, transform.position, transform.rotation);
             
             audio.PlayOneShot (plasmaShootFx);
             
             Destroy (clone.transform.gameObject, 2);
         }    
     }
 }

And the SmoothFollow (JS):

 var target : Transform;
 var distance = 3.0;
 var height = 3.0;
 var damping = 5.0;
 var smoothRotation = true;
 var rotationDamping = 10.0;
 
 function FixedUpdate () {
     var wantedPosition = target.TransformPoint(0, height, -distance);
     transform.position = Vector3.Lerp (transform.position, wantedPosition, Time.deltaTime * damping);
 
     if (smoothRotation) {
         var wantedRotation = Quaternion.LookRotation(target.position - transform.position, target.up);
         transform.rotation = Quaternion.Slerp (transform.rotation, wantedRotation, Time.deltaTime * rotationDamping);
     }
 
     else transform.LookAt (target, target.up);
 }

Now, how i can position the aim plane in the way of real point to asteroids (directly forward the ship an looking at the asteroids)? Please help!