public void CloseCamera()
 {
     _info     = null;
     _controls = null;
     ASICameraDll2.ASICloseCamera(_cameraId);
     _status = ASI_STATUS.CLOSED;
 }
 public void Stop()
 {
     _thread.Abort();
     ASICameraDll2.ASIStopExposure(0);
     ASICameraDll2.ASICloseCamera(0);
 }