A Shack-Hartmann wavefront sensor projected onto the sky with reduced focal anisoplanatism
arXiv:astro-ph/0602238 · doi:10.1111/j.1365-2966.2006.10160.x
Abstract
A method for producing a laser guide star wavefront sensor for adaptive optics with reduced focal anisoplanatism is presented. A theoretical analysis and numerical simulations have been carried out and the results are presented. The technique, named SPLASH (Sky-Projected Laser Array Shack-Hartmann), is shown to suffer considerably less from focal anisoplanatism than a conventional laser guide star system. The method is potentially suitable for large telescope apertures (~8m), and possibly for extremely large telescopes.
8 pages, 5 figures, accepted for publication in MNRAS