NexRemote allows the user to control their Celestron computerized telescope from their personal computer. NexRemote began shipping in March 2005 with select high-end computerised Celestron telescopes including NexStar i Series models, NexStar GPS models and CGE models. The Software comes with an RS-232 cable to connect your Celestron telescope to a PC. For those who already own a compatible Celestron telescope, the software can be purchased separately as a kit which includes the NexRemote software & licence, RS-232 cable and a Serial-to-USB adapter.