camera = new BABYLON.FollowCamera("FollowCam", new BABYLON.Vector3(0, 20, -5), scene);
	     camera.target = sphere1; // target any mesh or object with a "position" Vector3
	    
	     camera.radius = 20; // how far from the object to follow
	     camera.heightOffset = 8; // how high above the object to place the camera
	     camera.rotationOffset = 180; // the viewing angle
	     camera.cameraAcceleration = 0.01 // how fast to move
	     camera.maxCameraSpeed = 20 // speed limit
	    
	     scene.activeCamera = camera; // remember to notify your scene about a new active camera