On-sky demonstration of matched filters for wavefront measurements using ELT-scale elongated laser guide stars

被引：13

作者：

Basden, A. G. ^{[1
]}

Bardou, L. ^{[2
]}

Calia, D. Bonaccini ^{[3
]}

Buey, T. ^{[2
]}

Centrone, M. ^{[4
]}

Chemla, F. ^{[5
]}

Gach, J. L. ^{[6
]}

Gendron, E. ^{[2
]}

Gratadour, D. ^{[2
]}

Guidolin, I. ^{[3
]}

Jenkins, D. R. ^{[1
]}

Marchetti, E. ^{[3
]}

Morris, T. J. ^{[1
]}

Myers, R. M. ^{[1
]}

Osborn, J. ^{[1
]}

Reeves, A. P. ^{[1
]}

Reyes, M. ^{[7
]}

Rousset, G. ^{[2
]}

Lombardi, G. ^{[8
]}

Townson, M. J. ^{[1
]}

Vidal, F. ^{[2
]}

机构：

[1] Univ Durham, Dept Phys, South Rd, Durham DH1 3LE, England

[2] Univ P&M Curie, Sorbonne Univ, Univ Paris Diderot,CNRS, Sorbonne Paris Cite,LESIA,Observ Paris Paris Sci, 5 Pl Jules Janssen, F-92190 Meudon, France

[3] European Southern Observ, D-85748 Garching, Germany

[4] INAF OAR Natl Inst Astrophys, Via Frascati 33, I-00078 Monte Porzio Catone, RM, Italy

[5] Univ Paris Diderot, Sorbonne Paris Cite, CNRS, Observ Paris Paris Sci & Lettres,GEPI, 5 Pl Jules Janssen, F-92190 Meudon, France

[6] Lab Astrophys Marseille, 38 Rue F Joliot Curie, F-13388 Marseille 13, France

[7] Inst Astrofis Canarias, Via Lactea, E-38205 Tenerife, Spain

[8] Gran Telescopio Canarias, Cuesta de San Jose S-N, E-38712 Brena Baja, La Palma, Spain

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 466卷 / 04期

基金：

英国科学技术设施理事会;

关键词：

instrumentation: adaptive optics; methods: numerical; ADAPTIVE-OPTICS; TURBULENCE; TELESCOPE; SENSOR; LAYER;

D O I：

10.1093/mnras/stx062

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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 demonstrate the use of a matched filter algorithm for the processing of elongated laser guide star (LGS) Shack-Hartmann images, using the CANARY adaptive optics instrument on the 4.2 m William Herschel Telescope and the European Southern Observatory Wendelstein LGS Unit placed 40 m away. This algorithm has been selected for use with the forthcoming Thirty Meter Telescope, but until now had not been demonstrated on-sky. From the results of a first observing run, we show that the use of matched filtering improves our adaptive optics system performance, with increases in on-sky H-band Strehl measured up to about a factor of 1.1 with respect to a conventional centre of gravity approach. We describe the algorithm used, and the methods that we implemented to enable on-sky demonstration.

引用

页码：5003 / 5010

页数：8

共 30 条

[1] Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems [J].

Basden, A. G. ;

Atkinson, D. ;

Bharmal, N. A. ;

Bitenc, U. ;

Brangier, M. ;

Buey, T. ;

Butterley, T. ;

Cano, D. ;

Chemla, F. ;

Clark, P. ;

Cohen, M. ;

Conan, J. -M. ;

de Cos, F. J. ;

Dickson, C. ;

Dipper, N. A. ;

Dunlop, C. N. ;

Feautrier, P. ;

Fusco, T. ;

Gach, J. L. ;

Gendron, E. ;

Geng, D. ;

Goodsell, S. J. ;

Gratadour, D. ;

Greenaway, A. H. ;

Guesalaga, A. ;

Guzman, C. D. ;

Henry, D. ;

Holck, D. ;

Hubert, Z. ;

Huet, J. M. ;

Kellerer, A. ;

Kulcsar, C. ;

Laporte, P. ;

Le Roux, B. ;

Looker, N. ;

Longmore, A. J. ;

Marteaud, M. ;

Martin, O. ;

Meimon, S. ;

Morel, C. ;

Morris, T. J. ;

Myers, R. M. ;

Osborn, J. ;

Perret, D. ;

Petit, C. ;

Raynaud, H. ;

Reeves, A. P. ;

Rousset, G. ;

Sanchez Lasheras, F. ;

Sanchez Rodriguez, M. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2016, 459 (02) :1350-1359

[2] Sensitivity improvements for Shack-Hartmann wavefront sensors using total variation minimization [J].

Basden, A. G. ;

Morris, T. J. ;

Gratadour, D. ;

Gendron, E. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 449 (04) :3537-3542

[3] Wavefront sensing with a brightest pixel selection algorithm [J].

Basden, A. G. ;

Myers, R. M. ;

Gendron, E. .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2012, 419 (02) :1628-1636

[4] Durham extremely large telescope adaptive optics simulation platform [J].

Basden, Alastair ;

Butterley, Timothy ;

Myers, Richard ;

Wilson, Richard .

APPLIED OPTICS, 2007, 46 (07) :1089-1098

[5] A real-time simulation facility for astronomical adaptive optics [J].

Basden, Alastair .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 439 (03) :2854-2862

[6] Durham adaptive optics real-time controller [J].

Basden, Alastair ;

Geng, Deli ;

Myers, Richard ;

Younger, Eddy .

APPLIED OPTICS, 2010, 49 (32) :6354-6363

[7] Real-time correlation reference update for astronomical adaptive optics [J].

Basden, Alastair G. ;

Chemla, Fanny ;

Dipper, Nigel ;

Gendron, Eric ;

Henry, David ;

Morris, Tim ;

Rousset, Gerrard ;

Vidal, Fabrice .

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2014, 439 (01) :968-976

[8]

Bonaccini Calia D., 2016, P SPIE C SER, V9909

[9] The ESO transportable LGS Unit for measurements of the LGS photon return and other experiments [J].

Calia, D. Bonaccini ;

Guidolin, I. ;

Friedenauer, A. ;

Hager, M. ;

Karpov, V. ;

Pfrommer, T. ;

Holzloehner, R. ;

Lewis, S. ;

Hackenberg, W. ;

Lombardi, G. ;

Centrone, M. ;

Pedichini, F. .

MODERN TECHNOLOGIES IN SPACE-AND GROUND-BASED TELESCOPES AND INSTRUMENTATION II, 2012, 8450

[10] Experimental assessment of the matched filter for laser guide star wavefront sensing [J].

Conan, Rodolphe ;

Lardiere, Olivier ;

Herriot, Glen ;

Bradley, Colin ;

Jackson, Kate .

APPLIED OPTICS, 2009, 48 (06) :1198-1211

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