Celestron Telescope Cables

Click on one of the following links for more information:

• HC Serial Cable
• PC Port Cable
• Internet Resources

HC Serial Cable

The HC Serial cable connects your computer to the serial port on the base of the hand controller. This cable can be used by planetarium software or by NexRemote to control the telescope.

These cables can be purchased from Celestron directly, at various places on the internet, or by sending an email to andre@astrogeeks.com. Information on making your own cable can be found below.

HC Serial Pinout

HC Serial Pin Description 1 data to computer from telescope 2 GND 3 N/C 4 data from computer to telescope

DB9 RS232 Pinout

DB9 RS232 Pin Description 1 N/C 2 data to computer from telescope 3 data from computer to telescope 4 N/C 5 GND 6 N/C 7 RTS 8 CTS 9 N/C

PC Port Cable

The PC Port cable is often called a "programming" cable and can be used with NexRemote or to upgrade the motor controllers on the NexStar GPS telescopes.

These cables can be purchased from Celestron directly, at various places on the internet, or by sending an email to andre@astrogeeks.com. Information on making your own cable can be found below.

DB9 RS232 Pinout

See the RS232 Pinout section above for information on the RS232 connector pinout.

PC Port Pinout

PC Port Pin Description 1 GND 2 data from computer to telescope 3 GND 4 data to computer from telescope 5 RTS 6 GND 7 CTS 8 GND

Internet resources