July 11, 2011
Institute for the Physics and Mathematics of the Universe (IPMU)
The Laser Guide Star Adaptive Optics (LGSAO) system of the Subaru Telescope, which is recently completed, enables the compensation for atmospheric turbulence to achieve much higher spatial resolution of imaging observations. With this system, Masamune Oguri, an assistant professor of IPMU, and his colleagues observed the double quasar SDSS J1334+3315 to directly detect a foreground galaxy that causes the gravitational lensing effect producing the two images of a single background quasar. This observation well demonstrates the power of the LGSAO system.
More information: Subaru Telescope