On-Sky Testing of Algorithms for Extended LGS Spots

Alastair Basden; Andrew P. Reeves; Lisa Bardou; Domenico Bonaccini Calia; Tristan Buey; Mauro Centrone; Fanny Chemla; Philippe Feautrier; Jean Luc Gach; Eric Gendron; Damien Gratadour; David Jenkins; Gianluca Lombardi; Enrico Marchetti; Tim Morris; Richard Myers; James Osborn; Thomas Pfrommer; Marcos Reyes Garcia Talavera; Gerard Rousset; Eric Stadler; Robert Talbot; Matthew Townson; Fabrice Vidal

doi:10.26698/AO4ELT5.0022

On-Sky Testing of Algorithms for Extended LGS Spots

Alastair Basden^*, Andrew P. Reeves, Lisa Bardou, Domenico Bonaccini Calia, Tristan Buey, Mauro Centrone, Fanny Chemla, Philippe Feautrier, Jean Luc Gach, Eric Gendron, Damien Gratadour, David Jenkins, Gianluca Lombardi, Enrico Marchetti, Tim Morris, Richard Myers, James Osborn, Thomas Pfrommer, Marcos Reyes Garcia Talavera, Gerard RoussetEric Stadler, Robert Talbot, Matthew Townson, Fabrice Vidal

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

We present results of on-sky testing of different algorithms for highly extended LGS spots. We have used the CANARY wide-field AO demonstrator instrument on the 4.2m William Herschel Telescope on La Palma with the ESO Wendelstein LGS unit, launched 40m off-axis to simulate edge sub-apertures of the E-ELT. We investigate the performance of correlation and matched filter algorithms, comparing performance with a traditional centre of gravity. We also present on-sky tests of advanced pixel handling algorithms which we show improve AO system performance, including adaptive windowing (spot tracking), total variation minimisation and brightest pixel selection. Techniques to improve detection of truncated spots are also presented. Additionally, we present a critical study of Shack-Hartmann sensor accuracy with accurate detector readout models, highly applicable to AO system designers when specifying detector performance, or for predicting AO system performance with a given detector.

Original language	English
Title of host publication	AO4ELT5 Proceedings
Publisher	AO4ELT
Pages	1-11
Number of pages	11
DOIs	https://doi.org/10.26698/AO4ELT5.0022
Publication status	Published - 21 Sept 2017
Externally published	Yes
Event	5th Adaptive Optics for Extremely Large Telescopes, AO4ELT5 2017 - The Gran Teide Room, Hotel Botánico, Puerto de la Cruz, Tenerife, Canary Islands, Spain Duration: 25 Jun 2017 → 30 Jun 2017 http://research.iac.es/congreso/AO4ELT5/index.html

Conference

Conference	5th Adaptive Optics for Extremely Large Telescopes, AO4ELT5 2017
Abbreviated title	AO4ELT5
Country/Territory	Spain
City	Tenerife, Canary Islands
Period	25/06/17 → 30/06/17
Internet address	http://research.iac.es/congreso/AO4ELT5/index.html

Access to Document

10.26698/AO4ELT5.0022

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Basden, A., Reeves, A. P., Bardou, L., Calia, D. B., Buey, T., Centrone, M., Chemla, F., Feautrier, P., Gach, J. L., Gendron, E., Gratadour, D., Jenkins, D., Lombardi, G., Marchetti, E., Morris, T., Myers, R., Osborn, J., Pfrommer, T., Talavera, M. R. G., ... Vidal, F. (2017). On-Sky Testing of Algorithms for Extended LGS Spots. In AO4ELT5 Proceedings (pp. 1-11). AO4ELT. https://doi.org/10.26698/AO4ELT5.0022

@inproceedings{b6c6f5b0f6f3412cb6c857d62c1e9539,

title = "On-Sky Testing of Algorithms for Extended LGS Spots",

abstract = "We present results of on-sky testing of different algorithms for highly extended LGS spots. We have used the CANARY wide-field AO demonstrator instrument on the 4.2m William Herschel Telescope on La Palma with the ESO Wendelstein LGS unit, launched 40m off-axis to simulate edge sub-apertures of the E-ELT. We investigate the performance of correlation and matched filter algorithms, comparing performance with a traditional centre of gravity. We also present on-sky tests of advanced pixel handling algorithms which we show improve AO system performance, including adaptive windowing (spot tracking), total variation minimisation and brightest pixel selection. Techniques to improve detection of truncated spots are also presented. Additionally, we present a critical study of Shack-Hartmann sensor accuracy with accurate detector readout models, highly applicable to AO system designers when specifying detector performance, or for predicting AO system performance with a given detector.",

author = "Alastair Basden and Reeves, {Andrew P.} and Lisa Bardou and Calia, {Domenico Bonaccini} and Tristan Buey and Mauro Centrone and Fanny Chemla and Philippe Feautrier and Gach, {Jean Luc} and Eric Gendron and Damien Gratadour and David Jenkins and Gianluca Lombardi and Enrico Marchetti and Tim Morris and Richard Myers and James Osborn and Thomas Pfrommer and Talavera, {Marcos Reyes Garcia} and Gerard Rousset and Eric Stadler and Robert Talbot and Matthew Townson and Fabrice Vidal",

year = "2017",

month = sep,

day = "21",

doi = "10.26698/AO4ELT5.0022",

language = "English",

pages = "1--11",

booktitle = "AO4ELT5 Proceedings",

publisher = "AO4ELT",

note = "5th Adaptive Optics for Extremely Large Telescopes, AO4ELT5 2017, AO4ELT5 ; Conference date: 25-06-2017 Through 30-06-2017",

url = "http://research.iac.es/congreso/AO4ELT5/index.html",

}

Basden, A, Reeves, AP, Bardou, L, Calia, DB, Buey, T, Centrone, M, Chemla, F, Feautrier, P, Gach, JL, Gendron, E, Gratadour, D, Jenkins, D, Lombardi, G, Marchetti, E, Morris, T, Myers, R, Osborn, J, Pfrommer, T, Talavera, MRG, Rousset, G, Stadler, E, Talbot, R, Townson, M & Vidal, F 2017, On-Sky Testing of Algorithms for Extended LGS Spots. in AO4ELT5 Proceedings. AO4ELT, pp. 1-11, 5th Adaptive Optics for Extremely Large Telescopes, AO4ELT5 2017, Tenerife, Canary Islands, Spain, 25/06/17. https://doi.org/10.26698/AO4ELT5.0022

TY - GEN

T1 - On-Sky Testing of Algorithms for Extended LGS Spots

AU - Basden, Alastair

AU - Reeves, Andrew P.

AU - Bardou, Lisa

AU - Calia, Domenico Bonaccini

AU - Buey, Tristan

AU - Centrone, Mauro

AU - Chemla, Fanny

AU - Feautrier, Philippe

AU - Gach, Jean Luc

AU - Gendron, Eric

AU - Gratadour, Damien

AU - Jenkins, David

AU - Lombardi, Gianluca

AU - Marchetti, Enrico

AU - Morris, Tim

AU - Myers, Richard

AU - Osborn, James

AU - Pfrommer, Thomas

AU - Talavera, Marcos Reyes Garcia

AU - Rousset, Gerard

AU - Stadler, Eric

AU - Talbot, Robert

AU - Townson, Matthew

AU - Vidal, Fabrice

PY - 2017/9/21

Y1 - 2017/9/21

N2 - We present results of on-sky testing of different algorithms for highly extended LGS spots. We have used the CANARY wide-field AO demonstrator instrument on the 4.2m William Herschel Telescope on La Palma with the ESO Wendelstein LGS unit, launched 40m off-axis to simulate edge sub-apertures of the E-ELT. We investigate the performance of correlation and matched filter algorithms, comparing performance with a traditional centre of gravity. We also present on-sky tests of advanced pixel handling algorithms which we show improve AO system performance, including adaptive windowing (spot tracking), total variation minimisation and brightest pixel selection. Techniques to improve detection of truncated spots are also presented. Additionally, we present a critical study of Shack-Hartmann sensor accuracy with accurate detector readout models, highly applicable to AO system designers when specifying detector performance, or for predicting AO system performance with a given detector.

AB - We present results of on-sky testing of different algorithms for highly extended LGS spots. We have used the CANARY wide-field AO demonstrator instrument on the 4.2m William Herschel Telescope on La Palma with the ESO Wendelstein LGS unit, launched 40m off-axis to simulate edge sub-apertures of the E-ELT. We investigate the performance of correlation and matched filter algorithms, comparing performance with a traditional centre of gravity. We also present on-sky tests of advanced pixel handling algorithms which we show improve AO system performance, including adaptive windowing (spot tracking), total variation minimisation and brightest pixel selection. Techniques to improve detection of truncated spots are also presented. Additionally, we present a critical study of Shack-Hartmann sensor accuracy with accurate detector readout models, highly applicable to AO system designers when specifying detector performance, or for predicting AO system performance with a given detector.

UR - http://www.scopus.com/inward/record.url?scp=85049158621&partnerID=8YFLogxK

U2 - 10.26698/AO4ELT5.0022

DO - 10.26698/AO4ELT5.0022

M3 - Conference contribution

AN - SCOPUS:85049158621

SP - 1

EP - 11

BT - AO4ELT5 Proceedings

PB - AO4ELT

T2 - 5th Adaptive Optics for Extremely Large Telescopes, AO4ELT5 2017

Y2 - 25 June 2017 through 30 June 2017

ER -

On-Sky Testing of Algorithms for Extended LGS Spots

Abstract

Conference

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Other files and links

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