Maximum likelihood co-phasing of segmented mirrors with a pyramid in the visible: simulation vs. experiment

Autor: Samuel Lévêque, Pierre Janin-Potiron, Ronald Holzlöhner, Thierry Fusco, Victoria F. Wallauer, Benoit Neichel, Aglae Kellerer, Vincent Chambouleyron

Publikováno v: Adaptive Optics Systems VII.

We demonstrate numerically the phasing of a telescope with a primary segmented mirror consisting of 800 hexagonal segments using a pyramid wavefront sensor, supported by experiments. The segments are initially misaligned in piston/tip/tilt with media

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::817edf860191119de953ec89a59ab3aa
https://doi.org/10.1117/12.2563287

Long-term photometry of IC 348 with the Young Exoplanet Transit Initiative network

Autor: D. J. Fritzewski, J. Greif, M. Kitze, B. Dincel, Ch. Adam, H. F. W. Gilbert, Ch. Ginski, St. Raetz, Ronny Errmann, W. P. Chen, T. O. B. Schmidt, Ralph Neuhäuser, A. Pannicke, Sven Buder, Timothy Butterley, P. C. Huang, Theodor Pribulla, Richard Wilson, C. Marka, V. Wolf, M. Seeliger, M. Mallonn, L. K. Hardy, J. G. Schmidt, Jesús Hernández, Aglae Kellerer, Z. Garai, S. P. Littlefair, Cesar Briceno, V. S. Dhillon, Markus Mugrauer, Emil Kundra

Publikováno v: Monthly Notices of the Royal Astronomical Society. 462:2396-2417

We present long-term photometric observations of the young open cluster IC 348 with a baseline time-scale of 2.4 yr. Our study was conducted with several telescopes from the Young Exoplanet Transit Initiative (YETI) network in the Bessel R band to fi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3e58a53ad9b32d5625fbea65d125162
https://doi.org/10.1093/mnras/stw1797

LGS alternative wave-front sensing: Projected Pupil Plane Pattern (PPPP)

Autor: David F. Buscher, Francisco Javier de Cos Juez, Aglae Kellerer, Alastiar Basden, Richard M. Myers, Eddy Younger, Nazim Ali Bharmal, Huizhe Yang, Tim Morris

Publikováno v: Adaptive Optics Systems VI.

For the next generation of extremely large telescopes with the primary mirrors over 30 m in diameter, focal anisoplanatism renders single laser guide star AO useless. The laser tomography AO (LTAO) technique demonstrates an effective approach to redu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4b4c5942f964132097ee1422ba9dc885
https://doi.org/10.1117/12.2311991

Investigation of a transiting planet candidate in Trumpler 37: An astro-physical false positive eclipsing spectroscopic binary star *

Autor: J. G. Schmidt, N. Pawellek, Ł. Bukowiecki, M. M. Hohle, Markus Mugrauer, V. Krushevska, S. Meibom, Ronny Errmann, D. Tomono, Ľ. Hambálek, V. Yotov, B. Dincel, H. Takahashi, V. S. Radeva, Hiroshi Terada, Andrew W. Howard, Katharina Schreyer, Ch. Graefe, Grzegorz Nowak, Gracjan Maciejewski, Guillermo Torres, Ch. Adam, Martin Vaňko, Laurence A. Marschall, Yumiko Oasa, L. Trepl, Ch. Ginski, T. Eisenbeiß, X. Zhou, Dinko Dimitrov, T. O. B. Schmidt, C. Marka, Emil Kundra, S.C.-L. Hu, A. Dathe, J. Budaj, T. Pribulla, St. Raetz, Cesar Briceno, C. Broeg, Wen Ping Chen, Alfredo Sota, A. Berndt, M. Kitze, Aglae Kellerer, Zhenyu Wu, M. Fernandez, Ralph Neuhäuser, R. Chini, Diana P. Kjurkchieva, M. Moualla, M. Seeliger, S. Fiedler

Publikováno v: Astronomische Nachrichten. 335:345-356

We report our investigation of the first transiting planet candidate from the YETI project in the young (~4 Myr old) open cluster Trumpler 37. The transit-like signal detected in the lightcurve of the F8V star 2M21385603+5711345 repeats every 1.36489

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af646d0231398a46e5d5a3fff10be32f
https://doi.org/10.1002/asna.201412047

Experience with wavefront sensor and deformable mirror interfaces for wide-field adaptive optics systems

Autor: C. N. Dunlop, Nigel Dipper, Serge Meimon, Philippe Laporte, Carine Morel, Tim Morris, J. M. Huet, B. Le Roux, Alastair Basden, Andrew P. Reeves, C. Petit, Alan H. Greenaway, Timothy Butterley, O. Martin, Henri-François Raynaud, M. L. Sánchez Rodríguez, Urban Bitenc, Fabrice Vidal, M. Cohen, Brian Stobie, Jesús Daniel Santos, A. Guesalaga, Tristan Buey, Z. Hubert, Andy Longmore, N. Looker, Philippe Feautrier, Diego Cano, Paul Clark, M. Brangier, Eric Gendron, C. D. Guzman, Arnaud Sevin, Fanny Chemla, Deli Geng, Aglae Kellerer, Jean-Luc Gach, Stephen J. Goodsell, Nazim Ali Bharmal, Caroline Kulcsár, M. Marteaud, James Osborn, David Henry, Daniel Hölck, Gaetano Sivo, Colin Dickson, Richard M. Myers, Damien Gratadour, Eric Stadler, F. J. de Cos, E. Younger, Gérard Rousset, Jean-Marc Conan, D. Perret, F. Sánchez Lasheras, G. Talbot, Stephen Todd, David Atkinson, T. Fusco

Publikováno v: Monthly notices of the Royal Astronomical Society, 2016, Vol.459(2), pp.1350-1359 [Peer Reviewed Journal]
Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, 2016, 459 (2), pp.1350-1359. ⟨10.1093/mnras/stw730⟩
Scopus
RUO. Repositorio Institucional de la Universidad de Oviedo
instname
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2016, 459 (2), pp.1350-1359. ⟨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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::410f4f841a50494a53c8fa2d86ea33c2
http://dro.dur.ac.uk/18649/2/18649.pdf