Adaptive optics and lucky imager (AOLI): Presentation and first light

© 11th Scientific Meeting of the Spanish Astronomical Society. All rights reserved.In this paper we present the Adaptive Optics Lucky Imager (AOLI), a state-of-the-art instrument which makes use of two well proved techniques for extremely high spatial resolution with ground-based telescopes: Lucky Imaging (LI) and Adaptive Optics (AO). AOLI comprises an AO system, including a low order non-linear curvature wavefront sensor together with a 241 actuators deformable mirror, a science array of four 1024x1024 EMCCDs, allowing a 120 × 120 down to 36 × 36 00 field of view, a calibration subsystem and a powerful LI software. Thanks to the revolutionary WFS, AOLI shall have the capability of using faint reference stars (I ~ 16.5 ¿ 17.5), enabling it to be used over a much wider part of the sky than with common Shack-Hartmann AO systems. This instrument saw first light in September 2013 at William Herschel Telescope. Although the instrument was not complete, these commissioning demonstrated its feasibility, obtaining a FWHM for the best PSF of 0.151 ± 0.005 00 and a plate scale of 55.0 ± 0.3 mas pix¿1. Those observations served us to prove some characteristics of the interesting multiple T Tauri system LkH¿ 262-263, finding it to be gravitationally bounded. This interesting multiple system mixes the presence of proto-planetary discs, one proved to be double, and the first-time optically resolved pair LkH¿ 263AB (0.42 00 separation).