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Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems (2016)
Journal Article
Basden, A., Atkinson, D., Bharmal, N., Bitenc, U., Brangier, M., Buey, T., …Younger, E. (2016). Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems. Monthly Notices of the Royal Astronomical Society, 459(2), 1350-1359. https://doi.org/10.1093/mnras/stw730

Recent advances in adaptive optics (AO) have led to the implementation of wide field-of-view AO systems. A number of wide-field AO systems are also planned for the forthcoming Extremely Large Telescopes. Such systems have multiple wavefront sensors o... Read More about Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems.

A tomographic algorithm to determine tip-tilt information from laser guide stars (2016)
Journal Article
Reeves, A., Morris, T., Myers, R., Bharmal, N., & Osborn, J. (2016). A tomographic algorithm to determine tip-tilt information from laser guide stars. Monthly Notices of the Royal Astronomical Society, 459(1), 333-341. https://doi.org/10.1093/mnras/stw622

Laser Guide Stars (LGS) have greatly increased the sky-coverage of Adaptive Optics (AO) systems. Due to the up-link turbulence experienced by LGSs, a Natural Guide Star (NGS) is still required, preventing full sky-coverage. We present a method of obt... Read More about A tomographic algorithm to determine tip-tilt information from laser guide stars.

On-sky tests of the CuReD and HWR fast wavefront reconstruction algorithms with CANARY (2015)
Journal Article
Bitenc, U., Basden, A., Bharmal, N., Morris, T., Dipper, N., Gendron, E., …Myers, R. (2015). On-sky tests of the CuReD and HWR fast wavefront reconstruction algorithms with CANARY. Monthly Notices of the Royal Astronomical Society, 448(2), 1199-1205. https://doi.org/10.1093/mnras/stv003

CuReD (Cumulative Reconstructor with domain Decomposition) and HWR (Hierarchical Wavefront Reconstructor) are novel wavefront reconstruction algorithms for the Shack–Hartmann wavefront sensor, used in the single-conjugate adaptive optics. For a high-... Read More about On-sky tests of the CuReD and HWR fast wavefront reconstruction algorithms with CANARY.

Analysis of on-sky MOAO performance of CANARY using natural guide stars (2014)
Journal Article
Vidal, F., Gendron, E., Rousset, G., Morris, T., Basden, A., Myers, R., …Younger, E. (2014). Analysis of on-sky MOAO performance of CANARY using natural guide stars. Astronomy & Astrophysics, 569, Article A16. https://doi.org/10.1051/0004-6361/201322991

The first on-sky results obtained by CANARY, the multi-object adaptive optics (MOAO) demonstrator, are analysed. The data were recorded at the William Herschel Telescope, at the end of September 2010. We describe the command and calibrations algorith... Read More about Analysis of on-sky MOAO performance of CANARY using natural guide stars.

Open loop tomography with artificial neural networks on CANARY: on-sky results (2014)
Journal Article
Osborn, J., Guzman, D., De Cos Juez, F., Basden, A., Morris, T., Gendron, E., …Rousset, G. (2014). Open loop tomography with artificial neural networks on CANARY: on-sky results. Monthly Notices of the Royal Astronomical Society, 441(3), 2508-2514. https://doi.org/10.1093/mnras/stu758

We present recent results from the initial testing of an artificial neural network (ANN)-based tomographic reconstructor Complex Atmospheric Reconstructor based on Machine lEarNing (CARMEN) on CANARY, an adaptive optics demonstrator operated on the 4... Read More about Open loop tomography with artificial neural networks on CANARY: on-sky results.

Monte-Carlo simulation of ELT scale multi-object adaptive optics deformable mirror requirements and tolerances (2013)
Journal Article
Basden, A., Bharmal, N., Myers, R., Morris, S., & Morris, T. (2013). Monte-Carlo simulation of ELT scale multi-object adaptive optics deformable mirror requirements and tolerances. Monthly Notices of the Royal Astronomical Society, 435(2), 992-998. https://doi.org/10.1093/mnras/stt1302

Multi-object adaptive optics (MOAO) has been demonstrated by the CANARY instrument on the William Herschel Telescope. However, for proposed MOAO systems on the next-generation extremely large telescopes (ELTs), such as ELT Adaptive optics for GaLaxy... Read More about Monte-Carlo simulation of ELT scale multi-object adaptive optics deformable mirror requirements and tolerances.

The Durham adaptive optics real-time controller: capability and Extremely Large Telescope suitability (2012)
Journal Article
Basden, A., & Myers, R. (2012). The Durham adaptive optics real-time controller: capability and Extremely Large Telescope suitability. Monthly Notices of the Royal Astronomical Society, 424(2), 1483-1494. https://doi.org/10.1111/j.1365-2966.2012.21342.x

The Durham adaptive optics real-time controller is a generic, high-performance real-time control system for astronomical adaptive optics systems. It has recently had new features added as well as performance improvements, and here we give details of... Read More about The Durham adaptive optics real-time controller: capability and Extremely Large Telescope suitability.

Using artificial neural networks for open-loop tomography (2012)
Journal Article
Osborn, J., De Cos Juez, F. J., Guzman, D., Butterley, T., Myers, R., Guesalaga, A., & Laine, J. (2012). Using artificial neural networks for open-loop tomography. Optics Express, 20(3), 2420-2434. https://doi.org/10.1364/oe.20.002420

Modern adaptive optics (AO) systems for large telescopes require tomographic techniques to reconstruct the phase aberrations induced by the turbulent atmosphere along a line of sight to a target which is angularly separated from the guide sources tha... Read More about Using artificial neural networks for open-loop tomography.