... Previous: The GBT Precision Telescope Control System . ... In the framework of a Memorandum Of Understanding jointly signed by ESO and OAC, the OAC has been committed to design and realize the VST telescope, software included. ... This constraint translates into pros and cons for OAC side, because many software utilities developed for VLT are available, but their migration to VST case requires a deep knowledge of all details, usually known to the original software developers only. ...