The planar optics phase sensor: a study for the VLTI 2nd generation fringe tracker
The planar optics phase sensor: a study for the VLTI 2nd generation fringe tracker
In a few years, the second generation instruments of the Very Large Telescope Interferometer (VLTI) will routinely provide observations with 4 to 6 telescopes simultaneously. To reach their ultimate performance, they will need a fringe sensor capable to measure in real time the randomly varying optical paths differences. A collaboration …