AOLI, Adaptive Optics Lucky Imager, is the next generation of extremely high resolution instruments in the optical
range, combining the two more promising techniques: Adaptive optics and lucky imaging. The possibility of reaching
fainter objects at maximum resolution implies a better use of weak energy on each lucky image. AOLI aims to achieve
this by using an adaptive optics system to reduce the dispersion that seeing causes on the spot and therefore increasing
the number of optimal images to accumulate, maximizing the efficiency of the lucky imaging technique.
The complexity of developments in hardware, control and software for in-site telescope tests claim for a system to
simulate the telescope performance. This paper outlines the requirements and a concept/preliminary design for the
William Herschel Telescope (WHT) and atmospheric turbulence simulator. The design consists of pupil resemble, a
variable intensity point source, phase plates and a focal plane mask to assist in the alignment, diagnostics and calibration
of AOLI wavefront sensor, AO loop and science detectors, as well as enabling stand-alone test operation of AOLI.