Phone: +39 070 711801


Pranusanguni - San Basilio (Cagliari) Italy

Project

Antenna control software

The SRT control software, based on the ALMA Control Software framework, is designed according a distributed object pattern which eases the deployment of the systems over the LAN. Named NURAGHE as the sardinians megalitich buildings, at the current development stage it allows to control most of the subsystems by means of a user interface: the antenna mount, the receivers and the back-ends. NURAGHE is also provided by a scheduling system to allow the realization of complex observing strategies (e.g. on-the-fly mapping and cross scans over radio sources). The implementation of the minor servo-systems (e.g. sub-reflector, primary focus positioner and BWG main mirror) is being tested and it will be part of the next release of NURAGHE allowing SRT to switch focus and frequency within few minutes. Also the active surface is included in the control software: at the moment, it allows the switching of the main mirror profile from 'shaped' to parabolic, afterwards it will allow the profile correction as a function of the elevation to correct the mirror deformations. Moreover, for the astronomers which will be observing at the SRT, two workstations have been set up in the temporary control room, in order to prepare the observation, run the user interface, monitor the health status of the system and also, finally, retrieve the data.