The spectral resolution of a dispersive spectrograph is dependent on the width of the
entrance slit. This means that astronomical spectrographs trade-off throughput with spectral …

Aims. Adaptive optics (AO) system performance is improved using post-processing
techniques, such as point spread function (PSF) deconvolution. The PSF estimation involves …

Multi-object adaptive optics (MOAO) is a novel adaptive optics (AO) technique for wide-field
multi-object spectrographs (MOS). MOAO aims at applying dedicated wavefront corrections …

The spectral resolution of a dispersive astronomical spectrograph is limited by the trade-off
between throughput and the width of the entrance slit. Photonic guided wave transitions …

Prior statistical knowledge of atmospheric turbulence is essential for designing, optimizing
and evaluating tomographic adaptive optics systems. We present the statistics of the vertical …

CANARY is an on-sky Laser Guide Star (LGS) tomographic AO demonstrator in operation at
the 4.2 m William Herschel Telescope (WHT) in La Palma. From the early demonstration of …

Advanced adaptive optics (AO) instruments on ground-based telescopes require accurate
knowledge of the atmospheric turbulence strength as a function of altitude. This information …

Context. Laser guide stars (LGS) allow adaptive optics (AO) systems to reach greater sky
coverage, especially for AO systems correcting the atmospheric turbulence on large fields of …

The performance of adaptive optics systems is partially dependent on the algorithms used
within the real-time control system to compute wavefront slope measurements. We …

Context. Canary is the multi-object adaptive optics (MOAO) on-sky pathfinder developed in
the perspective of multi-object spectrograph on extremely large telescopes (ELTs). In 2013 …