The SiTech software runs Lesedi on 1ms1 (="1-metre server 1", i.e. Lesedi's TCS PC). 1ms2 is Lesedi's backup machine. There is a main GUI for the telescope (SiTechExe.exe), a communications GUI (ServoSCommunicator.exe), a GUI for each rotator (SiTechRotatorTCP.exe and "SiTechRotatorTCP.exe left"), one for the secondary and tertiary mirrors (SiTechFocuserTCP.exe), one for the dome (DomeControlTCP.exe) and a GUI that communicates with each subsystem's software (ObservatoryControlSAAO.exe). All of these GUIs must be running for the telescope to function fully, and only one instance of each can be run at a time, else problems will arise.
'''Leave the SiTech software running at all times during normal operations. It is vital to ensure that no parameter is changed in any of these GUIs.''' To prevent accidental interference, and to provide a streamlined user experience, a browser-based TCS has been developed for the user. It is intended that users will interact with the browser and not with SiTech.
== Starting SiTech software ==