Instruments and Mayall (image) DOE/Lawrence Berkeley National Laboratory Share Print E-Mail Caption The BigBOSS experiment adds a new widefield, prime focus corrector to the Mayall four-meter telescope. A focal array with 5,000 optical fibers, individually positioned by robotic actuators, delivers light to a set of 10 three-arm spectrometers. Credit Lawrence Berkeley National Laborator, and background photo by Mark Duggan Usage Restrictions With credit Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.