You can obtain a new flash upgradeable hand control with SkyAlign technology for your NexStar GPS scope.
(In order for the new flash upgradeable hand control to work with your telescope, you will need to upgrade the motor control firmware to version 4.0 or higher. If you have motor control version 3.0 or higher, you can accomplish this upgrade by using you new hand control and our free upgrade software “MCUpdate" available for download on our web site. If you have version 1.0 or 2.0 motor control board, you will need to contact Technical Support for further options. This may include the need to purchase a new motor control board.)
Simply contact your dealer. Or go to Celestron.com and order the model #93988: