Translator Disclaimer
10 July 2008 VST primary mirror active optics power distribution system
Author Affiliations +
The VST (VLT Survey Telescope), a 2.6 m class Alt-Az telescope in installation phase on Cerro Paranal in Northern Chile, at the European Southern Observatory (ESO) site, is provided with a distributed control system based on electro-mechanical actuators, aimed at implementing the main mirror active optics. Due to the requirement of dissipated power reduction under the mirror, a regulated power bus has been chosen, avoiding the use of voltage regulators mounted on the actuators control board. Because the parallel connection of the all control boards power lines makes this solution critical from the point of view of cabling drop voltage and fault propagation, a Power Distribution System (PDS) provided with remote monitoring and control capabilities has been designed. The PDS configuration is based on several Power Distribution Boxes (PDBs), connected in two separate benches. The harness accommodation was estimated by means of 3D CAD, to evaluate the length of the single power connections. The cabling drop voltage was verified by means of PSpice simulation. The single PDS bench has been provided with drop voltage remote sensing function for all the power supply voltages, while the single PDB has been provided with control and monitoring electronics to disconnect via tele-command the faulty control boards and to monitor in real time voltages and current consumption.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Molfese and A. Busatta "VST primary mirror active optics power distribution system", Proc. SPIE 7012, Ground-based and Airborne Telescopes II, 70122K (10 July 2008);


The 3,6 m Indo Belgian Devasthal Optical Telescope general...
Proceedings of SPIE (September 17 2012)
WIYN telescope active optics system
Proceedings of SPIE (June 08 1995)
VST primary mirror active optics electronics
Proceedings of SPIE (July 18 2008)
The VST active primary mirror support system
Proceedings of SPIE (July 22 2010)
Control and network system of position actuators in LAMOST
Proceedings of SPIE (February 04 2003)

Back to Top