W. Lupton

First Light Adaptive Optics Images from the Keck II Telescope: A New Era of High Angular Resolution Imagery

D. S. Acton, Jong R. An, C. Shelton, 2000 .

The Faint Object Spectrograph for the 2.5-m Isaac Newton Telescope

David W. Gellatly, G. C. Cox, C. G. Wynne, 1987 .

Performance of the W.M. Keck Observatory Natural Guide Star Adaptive Optic Facility: the first year at the telescope

D. Scott Acton, William Lupton, Peter L. Wizinowich, 2000, Astronomical Telescopes and Instrumentation.