Laser Guide Star Images of the Galactic Center

The Laser Guide Star Adaptive Optics System at the W. M. Keck Observatory takes infrared images of the Galactic Center. The image above is taken in the L'-band (3.8 microns), is 10 arcseconds in size and has a resolution of 82 milliarcseconds. At 3.8 microns, the Strehl ratio was measured at 75%, double the previous performance at this wavelength. A Strehl ratio of 100% represents a perfect, fully-corrected image. At K' (2.1 microns) the Strehl ratio was measured at 35%, a modest improvement, and the resolution was 56 milliarcseconds.

Other Images:
References and Credit:
UCLA Galactic Center Group
W.M. Keck Observatory Laser Team