Open PECTool
Open PECTool - manipulate peroidic error data for Celestron mounts.
...It is intended to work with Celestron Nexstar mounts like NexStar GPS, NexStar GPS-SA, NexStar iSeries, NexStar SE Series, NexStar GT, Advanced-VX, Advanced-GT and CGE mounts.
Communication to the hand control is 9600 bits/sec, no parity and one
stop bit via the RS-232 port on the base of the hand control.
To build it libnexstar version 0.11 or newer is needed, which can be found here: https://sourceforge.net/projects/libnexstar/
Mac OSX binary is available here: http://sourceforge.net/projects/openpectool/files/prebuilt/openpectool-0.0.1.dmg/download