AO4ELT 2 https://ao4elt2.lesia.obspm.fr/ en SPIP - www.spip.net 2d edition of the AO for ELT conference, Victoria, 25-30 sept. 2011 https://ao4elt2.lesia.obspm.fr/spip.php?article741 https://ao4elt2.lesia.obspm.fr/spip.php?article741 2011-10-28T15:27:30Z text/html en Yann CLENET edito (French Version) After the success of the first edition of the adaptive optics for the extremely large telescopes (AO4ELT) conference organized by Observatoire de Paris (LESIA and GEPI) and ONERA in the framework of their Phase parternship, the NRC Herzberg Institute of Astrophysics and the University of Victoria has joined the AO4ELT organization to settle the second edition of the AO4ELT conference. The conference took place in Victoria, Canada BC, between September 25 and 30, 2011, and (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique586" rel="directory">Announcements in English</a> / <a href="https://ao4elt2.lesia.obspm.fr/spip.php?mot2" rel="tag">edito</a> <div class='rss_texte'><p><a href='https://ao4elt2.lesia.obspm.fr/spip.php?article732' class='spip_in'>(French Version)</a></p> <dl class='spip_document_154 spip_documents spip_documents_center'> <dt><a href='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/IMG/jpg/ao4elt2_photo.jpg' title='JPEG - 4.6 Mb' type="image/jpeg"><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L331xH221/ao4elt2_photo_vignette-0b150.jpg' width='331' height='221' alt='JPEG - 4.6 Mb' style='height:221px;width:331px;' /></a></dt> <dt class='spip_doc_titre' style='width:331px;margin: 0 auto;'><strong>AO4ELT2 conference photo (credits Dennis Crabtree, HIA)</strong></dt> </dl> <h3 class="spip"></h3> <p>After the success of the first edition of the adaptive optics for the extremely large telescopes (AO4ELT) conference organized by Observatoire de Paris (LESIA and GEPI) and ONERA in the framework of their Phase parternship, the NRC Herzberg Institute of Astrophysics and the University of Victoria has joined the AO4ELT organization to settle the second edition of the AO4ELT conference.</p> <p>The conference took place in Victoria, Canada BC, between September 25 and 30, 2011, and encountered the same success as the first edition: 179 international experts in adaptive optics and related topics registered and attended to the conference.</p> <p>As many as 134 submissions have been received, and reviewed by the Science Organizing Committee. Compared to the 103 contributions of the first edition of the AO4ELT conference, this demonstrates the increasing interest of the community in adaptive optics for the future extremely large telescopes.</p> <p>Based on the SOC evaluations and taking into account the available oral slots, the <a href='https://ao4elt2.lesia.obspm.fr/spip.php?rubrique3' class='spip_in'>program</a> was made of 68 contributed talks and 66 posters, in addition to the 13 invited talks.</p> <p>Talks were organized in the following sessions:</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Astronomy with AO</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> AO instruments and pathfinders</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Wavefront correctors</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Wave-front sensing</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Laser guide star systems</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Atmospheric turbulence and other AO disturbances</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> AO real-time control</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> AO modeling and post-processing</p> <p>A third edition of the conference is planned in Europe in 2013: stay tuned !</p> <dl class='spip_document_52 spip_documents spip_documents_center'> <dt><a href='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/IMG/pdf/afficheao4elt2-3.pdf' title='PDF - 22.3 Mb' type="application/pdf"><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L200xH283/afficheao4elt2-mini-fc3b3.jpg' width='200' height='283' alt='PDF - 22.3 Mb' style='height:283px;width:200px;' /></a></dt> <dt class='spip_doc_titre' style='width:200px;margin: 0 auto;'><strong>AO4ELT2 conference poster</strong></dt> </dl></div> Vibration control of ELTs https://ao4elt2.lesia.obspm.fr/spip.php?article607 https://ao4elt2.lesia.obspm.fr/spip.php?article607 2011-09-16T19:00:20Z text/html en Jörg-Uwe POTT Submitted by Jörg-uwe POTT Authors J.-U. Pott and the LINC-NIRVANA team Affiliations Max-Planck-Institute of Astronomy (MPIA), Heidelberg, Germany Abstract MPIA is the PI institute of the MCAO-supported Fizeau imager LINC-NIRVANA at the LBT, and a partner of the E-ELT first light NIR imager MICADO (both SCAO and MCAO assisted). LINC-NIRVANA is a true pathfinder for future ELT-AO imagers both in terms of size and technology. I will present our vibration control strategies, involving (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique553" rel="directory">Poster</a> <div class='rss_chapo'><p>Submitted by Jörg-uwe POTT</p></div> <div class='rss_texte'><h4 class="spip">Authors</h4> <p>J.-U. Pott and the LINC-NIRVANA team</p> <h4 class="spip">Affiliations</h4> <p>Max-Planck-Institute of Astronomy (MPIA), Heidelberg, Germany</p> <h4 class="spip">Abstract</h4> <p>MPIA is the PI institute of the MCAO-supported Fizeau imager LINC-NIRVANA at the LBT, and a partner of the E-ELT first light NIR imager MICADO (both SCAO and MCAO assisted). LINC-NIRVANA is a true pathfinder for future ELT-AO imagers both in terms of size and technology. I will present our vibration control strategies, involving accelerometer based real-time vibration measurements, feedforward and feedback optical path control, predictive filtering, vibration sensitive active control of actuators, and the development of a dynamical model of the entire telescope. Our experiences, made with LINC-NIRVANA, will be fed into the MICADO structural AO design to reach highest on-sky sensitivity.</p></div> Optical Tube Assemblies for the ESO VLT Four Laser Guide Star Facility https://ao4elt2.lesia.obspm.fr/spip.php?article740 https://ao4elt2.lesia.obspm.fr/spip.php?article740 2011-09-08T13:39:28Z text/html en Niek DOELMAN Submitted by Fred Kamphues Authors R. Henselmans, D. Nijkerk, M. Lemmen, N.Rijnveld, N. Doelman, F.Kamphues Affiliations TNO Abstract ESO is implementing a new Adaptive Optics facility (AOF) on the Unit Telescope 4 (UT4) of the Very Large Telescope (VLT). For increased sky coverage, Four Laser Guide Star Facilities (4LGSF) will be installed. TNO is developing the Optical Tube Asssemblies (OTAs) for the 4LGSF.The OTAs are Galilean 20x beam expanders, expanding a ∅15 mm input beam to a (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique503" rel="directory">Poster</a> <div class='rss_chapo'><p>Submitted by Fred Kamphues</p></div> <div class='rss_texte'><h4 class="spip">Authors</h4> <p> R. Henselmans, D. Nijkerk, M. Lemmen, N.Rijnveld, N. Doelman, F.Kamphues</p> <h4 class="spip">Affiliations</h4> <p>TNO</p> <h4 class="spip">Abstract</h4> <p>ESO is implementing a new Adaptive Optics facility (AOF) on the Unit Telescope 4 (UT4) of the Very Large Telescope (VLT). For increased sky coverage, Four Laser Guide Star Facilities (4LGSF) will be installed. TNO is developing the Optical Tube Asssemblies (OTAs) for the 4LGSF.The OTAs are Galilean 20x beam expanders, expanding a ∅15 mm input beam to a steerable ∅300 mm output beam with a wavefront quality requirement of <50 nm rms. The allowed defocus under the influence of the changing environmental air temperature (0-15°C, -0.7°C/hr gradient) is only 0.2 waves. The thermal behaviour of the system has been analyzed by combining optical, lumped mass and FE analyses. The design is passively athermalized over a large temperature range as well as under the influence of thermal gradients. Extensive thermal and high power laser testing has shown the system performs as required. This poster describes the design and test results.</p></div> After the conference - Proceedings https://ao4elt2.lesia.obspm.fr/spip.php?article739 https://ao4elt2.lesia.obspm.fr/spip.php?article739 2011-08-23T16:53:08Z text/html en Jean-Pierre VERAN Information for the proceedings General information After reviewing by the chairs, proceedings will be published by ONERA under three possible formats: in a book, in a CD and online (which is the default format). You have to choose your desired format by answering a poll by the end of February 2012. Instructions Manuscript due date is 29 February 2012. Manuscripts must not exceed 8 pages for regular contributions and 10 pages for invited speakers. The Word and LaTex templates are (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique10" rel="directory">Instructions for authors and participants</a> <div class='rss_chapo'><p>Information for the proceedings</p></div> <div class='rss_texte'><h3 class="spip">General information</h3> <p>After reviewing by the chairs, proceedings will be published by ONERA under three possible formats: in a book, in a CD and online (which is the default format).</p> <p>You have to choose your desired format by answering a <a href='https://ao4elt2.lesia.obspm.fr/spip.php?article742' class='spip_in'>poll</a> by the end of February 2012.</p> <h3 class="spip">Instructions</h3> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Manuscript due date is <strong>29 February 2012</strong>. <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Manuscripts must not exceed 8 pages for regular contributions and 10 pages for invited speakers. <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> The Word and LaTex templates are provided below. The latter is preferred. <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Figures and images in the articles must have a resolution larger than 300 dpi. <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Authors have to check the correct appearance of their article after printing. <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> Authors then have to submit <strong>in PDF format</strong> their article <a href='https://ao4elt2.lesia.obspm.fr/spip.php?article743' class='spip_in'>here</a>. The size of the PDF file must be <strong>10 Mo maximum</strong> ! <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> If you have any problem with your proceedings, please inform the LOC (loc.ao4elt2 at sympa.obspm.fr).</p> <h3 class="spip">Special instructions for the LaTeX compilation</h3> <p>If you are a Mac user, in particular using the TeXShop software, compiling using the "pdftex" option leads to a bad rendering of the pdf file. You should instead choose between the two following solutions: <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> compiling you tex file with the option "TeX and DVI" instead of "pdftex" <br /><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> compiling in a terminal: "latex yourfile.tex" and "dvipdf yourfile.dvi"</p></div> At the conference https://ao4elt2.lesia.obspm.fr/spip.php?article737 https://ao4elt2.lesia.obspm.fr/spip.php?article737 2011-08-23T16:50:15Z text/html en Jean-Pierre VERAN Information of what will happen during the conference Conference Floor Plan: Please take a minute to familiarize yourself with the conference floor plan Registration Desk: When you arrive at the Conference Centre, you need to check-in at the Registration Desk in the “Pre-Function” area, to get your conference badge and information package. The Registration Desk will be available throughout the conference to provide general information about the conference, and about Victoria. The (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique10" rel="directory">Instructions for authors and participants</a> <div class='rss_chapo'><p>Information of what will happen during the conference</p></div> <div class='rss_texte'><p><strong>Conference Floor Plan:</strong></p> <p>Please take a minute to familiarize yourself with the <a href="http://www.victoriaconference.com/floorplans_levelone.php" class='spip_out' rel='external'>conference floor plan</a></p> <p><strong>Registration Desk:</strong></p> <p>When you arrive at the Conference Centre, you need to check-in at the Registration Desk in the “Pre-Function” area, to get your conference badge and information package. The Registration Desk will be available throughout the conference to provide general information about the conference, and about Victoria. The registration desk will be open at the following times:</p> <ul class="spip"><li> Sunday: 4pm – 9pm</li><li> Monday: 8am – 4pm</li><li> Tue – Thu: 8:30am – 4pm</li><li> Friday: Closed</li></ul> <p><strong>Oral presentations:</strong></p> <p>Each oral presentation is assigned a 20 minutes time slot (30 minutes for invited papers). In order to keep on schedule, we ask each speaker to limit their talk to a maximum of 15 minutes (25 minutes for invited speakers), to leave enough time for a few questions and a smooth transition to the next talk.</p> <p>We require that each speaker checks-in with their session chair at the presenter podium during the break preceding their session (at the latest), and to upload their talk onto a memory stick that we will provide. The presenter will be given the choice to run their presentation on either a Mac or a PC. Presentation softwares that we will support include PowerPoint, Keynote and Adobe Reader. If you have different requirements, please contact the LOC as soon as possible.</p> <p>We are planning to make the presentation available on the conference website on the following night. If you do not want your talk to be uploaded to the conference website, please inform the LOC.</p> <p><strong>Poster presentations:</strong></p> <p>Posters will displayed in the Saanich and Oak Bay rooms. They will be placed on 8ftx4ft boards, with 2 posters on each board side. Therefore, the maximum size of a poster is 4ftx4ft. We will provide pins and velcros to attach the posters.</p> <p>Posters must be set-up between 4pm Sunday Sep 25 and 10:30am Monday Sep 26. They must be taken down by the end of Thursday Sep 29. The program includes three dedicated breaks, on the Tuesday, Wednesday and Thursday afternoons, but attendees will be encouraged to view the posters during all the breaks Monday through Thursday.</p> <p><strong>Internet connection:</strong></p> <p>Wireless Internet connection will be available for free throughout the conference. Connection details will be given upon registration.</p> <p><strong>Exhibit booths:</strong></p> <p>A few exhibit booths will be set-up in the “Pre-Function” area on Tuesday, Wednesday and Thursday. These booths will allow some of our sponsors to present information and products relevant to the field of AO.</p></div> Before the conference https://ao4elt2.lesia.obspm.fr/spip.php?article738 https://ao4elt2.lesia.obspm.fr/spip.php?article738 2011-08-23T16:49:46Z text/html en Jean-Pierre VERAN Information of what to do before the conference In order to attend the conference, two steps must be completed: Pre-registration and, if desired, abstract submission to be done by filling the appropriate on-line form. When filling this form, you will choose a login to access your private area on the conference website (ao4elt.lesia.obspm.fr) Note: The pre-registration form no longer accepts abstract submissions. To submit a post-deadline paper, please contact the LOC. Final (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique10" rel="directory">Instructions for authors and participants</a> <div class='rss_chapo'><p>Information of what to do before the conference</p></div> <div class='rss_texte'><p>In order to attend the conference, two steps must be completed:</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> <strong>Pre-registration</strong> and, if desired, abstract submission to be done by filling <a href='https://ao4elt2.lesia.obspm.fr/spip.php?article2' class='spip_in'>the appropriate on-line form</a>. When filling this form, you will choose a login to access your private area on the conference website (<a href='https://ao4elt2.lesia.obspm.fr/ao4elt.lesia.obspm.fr'>ao4elt.lesia.obspm.fr</a>)</p> <p>Note: The pre-registration form no longer accepts abstract submissions. To submit a post-deadline paper, please <a href='https://ao4elt2.lesia.obspm.fr/spip.php?article15' class='spip_in'>contact the LOC</a>.</p> <p><img src='https://ao4elt2.lesia.obspm.fr/sites/ao4elt2/local/cache-vignettes/L8xH11/puce-32883.gif' width='8' height='11' class='puce' alt="-" style='height:11px;width:8px;' /> <strong>Final registration</strong> and <strong>Payment</strong>, to be done on <a href='https://ao4elt2.lesia.obspm.fr/spip.php?article343' class='spip_in'>an external website</a>, hosted by the University of Victoria, which has its dedicated private area and login identification. You are advised to use the same login on both website (conference and payment).</p></div> Analysis of Ground Layer Turbulence Profiles at CTIO and Mauna Kea https://ao4elt2.lesia.obspm.fr/spip.php?article736 https://ao4elt2.lesia.obspm.fr/spip.php?article736 2011-08-19T10:09:58Z text/html en Ronald GAGNE Submitted by R. Gagné Authors Ronald Gagné, Paul Hickson, Thomas Pfrommer, Masen Lamb, Marc Baril Affiliations University of British Columbia Abstract For the past 4 years high-resolution ground layer turbulence measurements have been carried out on Cerro Tololo Inter-American Observatory (CTIO) with a lunar scintillometer. We present C_N2-profiles in the range up to 1 km and seeing statistics from fall 2007 to spring 2011. Comparisons with weather parameter links local topography to (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique573" rel="directory">Poster</a> <div class='rss_chapo'><p>Submitted by R. Gagné</p></div> <div class='rss_texte'><h4 class="spip">Authors</h4> <p>Ronald Gagné, Paul Hickson, Thomas Pfrommer, Masen Lamb, Marc Baril</p> <h4 class="spip">Affiliations</h4> <p>University of British Columbia</p> <h4 class="spip">Abstract</h4> <p>For the past 4 years high-resolution ground layer turbulence measurements have been carried out on Cerro Tololo Inter-American Observatory (CTIO) with a lunar scintillometer. We present C_N2-profiles in the range up to 1 km and seeing statistics from fall 2007 to spring 2011. Comparisons with weather parameter links local topography to optical turbulence. The observations in Chile are compared to a ground-layer study on Mauna Kea at the Canada France Hawaii Telescope by the use of median seeing values as well as scale heights derived from the turbulence integral.</p></div> DAYTIME OBSERVATIONS WITH ELTs IN THE THERMAL INFRARED USING LASER GUIDE STAR ADAPTIVE OPTICS https://ao4elt2.lesia.obspm.fr/spip.php?article734 https://ao4elt2.lesia.obspm.fr/spip.php?article734 2011-08-19T10:06:24Z text/html en Jacques BECKERS Submitted by J. M. Beckers Authors J. M. Beckers Affiliations retired Abstract Using Magneto-Optical Filters (MOFs; also called FADOFs = Faraday Anomalous Dispersion Optical Filters) it is possible to clearly see Sodium Laser Guide Stars in the daytime sky. This makes it possible to use ELT Adaptive Optics systems for diffraction limited observations 24 hours/day. Because of the bright daytime sky this LGS AO application is only of astronomical interest in the mid-infrared wavelength (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique543" rel="directory">Poster</a> <div class='rss_chapo'><p>Submitted by J. M. Beckers</p></div> <div class='rss_texte'><h4 class="spip">Authors</h4> <p> J. M. Beckers</p> <h4 class="spip">Affiliations</h4> <p> retired</p> <h4 class="spip">Abstract</h4> <p>Using Magneto-Optical Filters (MOFs; also called FADOFs = Faraday Anomalous Dispersion Optical Filters) it is possible to clearly see Sodium Laser Guide Stars in the daytime sky. This makes it possible to use ELT Adaptive Optics systems for diffraction limited observations 24 hours/day. Because of the bright daytime sky this LGS AO application is only of astronomical interest in the mid-infrared wavelength region (4 – 25 microns wavelengths) where the thermal radiation of the atmosphere-telescope system dominates the scattering of sunlight thus making the day- and night- sky background comparable. Incorporating MOFs in the LGS wavefront sensor thus would more than double the ELT observing time for mid-infrared astronomy and would make sources in almost the entire sky available for observation at any time of the year. Even though the AO would increase the brightness of point-sources, it would not compete with the James Webb Space Telescope in terms of detectability. The gain with respect to the JWST lies in the 5 to 6 times better linear angular resolution. The contrast gain in brightness at near-IR wavelengths is sufficient to give sufficient natural guide stars there for tip-tilt control. MOFs have been shown to function with Na lasers in LIDAR applications (see Beckers and Cacciani, Experimental Astronomy 11, 133, 2001). The main complication associated with incorporating MOFs in ELT AO system is likely the requirement to make the telescope and its enclosure robust in the daytime environment. I refer to SPIE Proceedings 6986 (2008) for a recent reference on this topic.</p></div> Quasi-real-time end-to-end simulations of ELT-scale adaptive optics systems on GPUs https://ao4elt2.lesia.obspm.fr/spip.php?article735 https://ao4elt2.lesia.obspm.fr/spip.php?article735 2011-08-19T10:05:40Z text/html en Damien GRATADOUR Submitted by D. Gratadour Authors Damien Gratadour Affiliations LESIA Abstract Our team has started the development of a code dedicated to GPUs for the simulation of AO systems at the E-ELT scale. It uses the CUDA toolkit and an original binding to Yorick (an open source interpreted language) to provide the user with a comprehensive interface. In this paper we present the first performance analysis of our simulation code, showing its ability to provide Shack-Hartmann (SH) images and (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique563" rel="directory">Poster</a> <div class='rss_chapo'><p>Submitted by D. Gratadour</p></div> <div class='rss_texte'><h4 class="spip">Authors</h4> <p> Damien Gratadour</p> <h4 class="spip">Affiliations</h4> <p> LESIA</p> <h4 class="spip">Abstract</h4> <p>Our team has started the development of a code dedicated to GPUs for the simulation of AO systems at the E-ELT scale. It uses the CUDA toolkit and an original binding to Yorick (an open source interpreted language) to provide the user with a comprehensive interface.</p> <p>In this paper we present the first performance analysis of our simulation code, showing its ability to provide Shack-Hartmann (SH) images and measurements at the kHz scale for VLT-sized AO system and in quasi-real-time (up to 70 Hz) for ELT-sized systems on a single top-end GPU. The simulation code includes multiple layers atmospheric turbulence generation, ray tracing through these layers, image formation at the focal plane of every sub-apertures of a SH sensor using either natural or laser guide stars and centroiding on these images using various algorithms. Turbulence is generated on-the-fly giving the ability to simulate hours of observations without the need of loading extremely large phase screens in the global memory. Because of its performance this code additionally provides the unique ability to test real-time controllers for future AO systems under nominal conditions.</p></div> List of participants https://ao4elt2.lesia.obspm.fr/spip.php?article733 https://ao4elt2.lesia.obspm.fr/spip.php?article733 2011-07-13T13:30:28Z text/html en Florence HENRY AKIYAMA Masayuki, Astronomical Institute, Tohoku University AMMONS S. Mark, LLNL ANDERSEN David, NRC HIA ATWOOD Jenny, NRC-HIA BALARD Philippe, LAM - Labo Astrophysique de Marseille BASDEN Alastair, Durham University BAUDOZ Pierre, Observatoire de Paris BECHET Clementine, European Southern Observatory BECKERS Jacques, University of Arizona BENDEK Eduardo, University of Arizona BERGOMI Maria, (...) - <a href="https://ao4elt2.lesia.obspm.fr/spip.php?rubrique588" rel="directory">List of participants</a> <div class='rss_texte'><ol class="liste num deucol"> <li>AKIYAMA Masayuki, Astronomical Institute, Tohoku University</li> <li>AMMONS S. Mark, LLNL</li> <li>ANDERSEN David, NRC HIA</li> <li>ATWOOD Jenny, NRC-HIA</li> <li>BALARD Philippe, LAM - Labo Astrophysique de Marseille</li> <li>BASDEN Alastair, Durham University</li> <li>BAUDOZ Pierre, Observatoire de Paris</li> <li>BECHET Clementine, European Southern Observatory</li> <li>BECKERS Jacques, University of Arizona</li> <li>BENDEK Eduardo, University of Arizona</li> <li>BERGOMI Maria, INAF-Osservatorio Astronomico di Padova</li> <li>BERWEIN Juergen, Max Planck Institute for Astronomy</li> <li>BEUZIT Jean-Luc, IPAG</li> <li>BHARMAL Nazim, CfAI, Durham University</li> <li>BIASI Roberto, Microgate</li> <li>BIERDEN Paul, Boston Micromachines Corp.</li> <li>BLAIN Célia, Adaptive Optics Laboratory</li> <li>BONACCINI CALIA Domenico, ESO</li> <li>BOUCHER Marc-André, INO / NRC / HIA</li> <li>BOUCHEZ Antonin, Giant Magellan Telescope</li> <li>BOYER Corinne, TMT</li> <li>BRADLEY Colin, University of Victoria</li> <li>BRIEGEL Florian, Max Planck Inst. f. Astronomy, Heidelberg</li> <li>BROUSSEAU Denis, Laval University</li> <li>BRUNELLI Alessandro, inaf</li> <li>BRYNNEL Joar, Large Binocular Telescope</li> <li>CAPUTA Kris, National Research Council Canada - Herzberg Institute of Astrophysics</li> <li>CARBILLET Marcel, UMR 6525 H. Fizeau (UNS/CNRS/OCA)</li> <li>CHAILLOT Stéphane, BOOSTEC</li> <li>CHEBBO Manal, LAM</li> <li>CHRISTOU Julian, Gemini Observatory</li> <li>CLARKE Fraser, University of Oxford</li> <li>CLENET Yann, LESIA (Observatoire de Paris - CNRS)</li> <li>CODONA Johanan, Univ of Arizona/Steward Observatory</li> <li>CONAN Rodolphe, The Australian National University - Research School of Astronomy & Astrophysics</li> <li>CONAN Jean-Marc, ONERA</li> <li>CONRAD Albert, Max-Planck-Institut für Astronomie</li> <li>CORREIA Carlos, Herzberg Institute of Astrophysics</li> <li>CORTES Angela, Pontificia Universidad Católica de Chile</li> <li>COSTILLE Anne, IPAG</li> <li>CRABTREE Dennis, NRC-HIA</li> <li>CRASS Jonathan, Institute of Astronomy, University of Cambridge</li> <li>CREPY Bruno, CILAS</li> <li>CUBY Jean-Gabriel, Laboratoire d'Astrophysique de Marseille</li> <li>DAVIES Richard, MPE</li> <li>DEKANY Richard, California Institute of Technology</li> <li>DIMOUDI Sofia, Durham University</li> <li>DIOLAITI Emiliano, INAF - Osservatorio Astronomico di Bologna</li> <li>DIPPER Nigel, CfAI, Durham University</li> <li>DOELMAN Niek, TNO</li> <li>DOHLEN Kjetil, CNRS</li> <li>DORGEVILLE Celine, Gemini Observatory</li> <li>ELLERBROEK Brent, TMT Observatory Corporation</li> <li>ESPOSITO Simone, Osservatorio di Arcetri</li> <li>FALOMO Renato, INAF - OAPD</li> <li>FARINATO Jacopo, INAF - Osservatorio Astronomico di Padova</li> <li>FEAUTRIER Philippe, IPAG</li> <li>FERRARI Marc, LAM - Laboratoire d' Astrophysique de Marseille</li> <li>FITZSIMMONS Joeleff, NRC-HIA</li> <li>FOLCHER Jean-pierre, Université de Nice Sophia-Antipolis</li> <li>FUSCO Thierry, ONERA / DOTA</li> <li>GACH Jean-luc, LAM & First Light Imaging</li> <li>GAGNE Ronald, University of British Columbia</li> <li>GALICHER Raphael, NRC-HIA</li> <li>GALLIENI Daniele, A.D.S. International</li> <li>GAVEL Donald, University of California Lick Observatory</li> <li>GENDRON Eric, Observatoire de Paris</li> <li>GILLES Luc, Thirty Meter Telescope Observatory Corp.</li> <li>GLADYSZ Szymon, Israel Institute of Technology</li> <li>GRAY Morgan, LAM / OAMP / University of Provence</li> <li>GUESALAGA ANDRES, PONTIFICIA UNIVERSIDAD CATOLICA DE CHILE</li> <li>GUILLAUME Christian, CNRS/OAMP/OHP</li> <li>GUYON Olivier, Subaru Telescope</li> <li>HARTUNG Markus, Gemini Observatory</li> <li>HAYANO Yutaka, Subaru Telescope, NAOJ.</li> <li>HERBST Thomas, Max Planck Institute for Astronomy</li> <li>HERRIOT Glen, NRC-HIA</li> <li>HICKSON Paul, University of British Columbia</li> <li>HINZ Philip, University of Arizona</li> <li>HUBIN Norbert, ESO</li> <li>HUGOT Emmanuel, Laboratoire d'Astrophsique de Marseille</li> <li>ITO Meguru, University of Victoria</li> <li>JACKSON Kate, University of Victoria, Mechanical Engineering</li> <li>JOHNSON Robert, Starfire Optical Range</li> <li>JOHNSON Luke, National Solar Observatory</li> <li>JOLISSAINT Laurent, aquilAOptics</li> <li>KARPOV Vladimir, MPB Communications Inc.</li> <li>KASPER Markus, ESO</li> <li>KENWORTHY Matthew, Leiden Observatory</li> <li>KITTMANN Frank, MPIA</li> <li>KULCSAR Caroline, Université Paris 13</li> <li>LAMB Masen, University of Victoria</li> <li>LAPORTE Philippe, Observatoire de Paris</li> <li>LARDIèRE Olivier, University of Victoria</li> <li>LAVIGNE Jean-François, INO</li> <li>LE LOUARN Miska, ESO</li> <li>LINTON Claudette, MPB Communications</li> <li>LOMBARDI Gianluca, European Southern Observatory</li> <li>LOOP David, Herzberg Institute of Astrophysics</li> <li>MACINTOSH Bruce, LLNL</li> <li>MAGRIN Demetrio, INAF - Osservatorio Astronomico di Padova</li> <li>MAROIS Christian, NRC-HIA</li> <li>MARTINACHE Frantz, Subaru Telescope</li> <li>MASCIADRI Elena, INAF - Arcetri Astrophysical Observatory</li> <li>MATEEN Mala, Univeristy of Arizona</li> <li>MCLEOD Brian, Harvard-Smithsonian Center for Astrophysics</li> <li>MCMAHON Thomas, University of Arizona</li> <li>MEIMON Serge, ONERA</li> <li>MONTILLA Iciar, Instituto de Astrofísica de Canarias</li> <li>MORRIS Simon, Durham University</li> <li>MORRIS Tim, Durham University</li> <li>MYERS Richard, Durham University, UK</li> <li>NASH Reston, University of Victoria</li> <li>NAVARRETE Julio, European Southern Observatory</li> <li>NEICHEL Benoit, Gemini Observatory</li> <li>NELSON Jerry, Thirty Meter Telescope Project</li> <li>NIEBERGAL Joel, University of Victoria</li> <li>OBEREDER Andreas, Mathconsult GmbH</li> <li>ORBAN DE XIVRY Gilles, MPE</li> <li>PARISOT Amélie, Onera</li> <li>PATRU Fabien, European Southern Observatory (ESO)</li> <li>PAZDER John, National Research COuncil Canada</li> <li>PETER Diethard, Max-Planck-Institut fuer Astronomie</li> <li>PFROMMER Thomas, University of British Columbia</li> <li>PHAM Laurie, University of Victoria</li> <li>PINNA Enrico, INAF - Oss. di Arcetri</li> <li>POTT Jörg-Uwe, Max-Planck-Institute for Astronomy, MPIA, Heidelberg</li> <li>POULAT Michel, CILAS</li> <li>PRICE Ian, The Australian National University - Research School of Astronomy & Astrophysics</li> <li>PUEYO Laurent, Johns Hopkins University</li> <li>QUIROS-PACHECO Fernando, INAF - Arcetri</li> <li>RABIEN Sebastian, MPE</li> <li>RAGAZZONI Roberto, INAF - Astronomical Observatory of Padova</li> <li>RAMLAU Ronny, Industrial Mathematics Institute, Kepler University Linz</li> <li>RAYNAUD Henri-François, L2TI - Université Paris 13</li> <li>REYES Marcos, IAC</li> <li>RIGAUT Francois, Gemini Observatory</li> <li>ROBERTS Scott, NRC/HIA and TMT</li> <li>RODRIGUEZ Ignacio, Pontificia Universidad Catolica de Chile</li> <li>ROOMS Frédéric, ALPAO</li> <li>ROTH Katherine, Gemini Observatory</li> <li>ROUSSET Gérard</li> <li>RUCH Eric, Sagem Défense Sécurité</li> <li>RUPPEL Thomas, Institute for System Dynamics</li> <li>SADDLEMYER Leslie, NRC Canada</li> <li>SALTER Graeme, University of New South Wales</li> <li>SARAZIN Marc, European Southern Observatory</li> <li>SCHOECK Matthias, TMT Observatory Corp</li> <li>SCHREIBER Laura, Università di Bologna - Osservatorio di Padova</li> <li>SCHWAB Christian, Yale University</li> <li>SCHWARTZ Noah, UK Astronomy Technology Centre</li> <li>SHATOKHINA Iuliia, Institute for Industrial Mathematics, Johannes Kepler University Linz</li> <li>SIMARD Luc, NRC-HIA</li> <li>SIMONS Doug, Gemini Observatroy</li> <li>SINQUIN Jean-Christophe, CILAS</li> <li>SIVO Gaetano, L2TI-Université Paris 13, Onera DOTA/HRA</li> <li>STEINBRING Eric, Herzberg Institute of Astrophysics</li> <li>STRACHAN Mel, Heriot Watt University/ STFC</li> <li>STUIK Remko, Leiden Observatory, Leiden University</li> <li>TALLON Michel, Centre de Recherche Astrophysique de Lyon, CNRS, France</li> <li>TECZA Matthias, University of Oxford</li> <li>THATTE Niranjan, University of Oxford</li> <li>THOMAS Sandrine, UCO/Lick Observatory</li> <li>THOMPSON Hugh, TMT</li> <li>TOKOVININ Andrei, NOAO</li> <li>TRANCHO Gelys, GMTO/Carnegie</li> <li>TROY Mitchell, JPL</li> <li>VAITHEESWARAN Vidhya, University of Arizona</li> <li>VAN DAM Marcos, Flat Wavefronts</li> <li>VéRAN Jean-Pierre, NRC - Herzberg Institute of Astrophysics</li> <li>VIDAL Fabrice, LESIA</li> <li>VIOTTO Valentina, INAF - Osservatorio Astronomico di Padova</li> <li>VOGEL Curtis, the Optical Sciences Company</li> <li>WALKER Gordon, UBC</li> <li>WANG Lianqi, TMT Corporation</li> <li>WIZINOWICH Peter, W.M. Keck Observatory</li> <li>YGOUF Marie, ONERA</li> <li>ZHANG Xianyu, Max-Planck-Institut fuer Astronomie</li> <li>ZIAD Aziz, University of Nice - Laboratoire H. Fizeau</li> </ol> <br class="nettoyeur"/> <br/> Total : 179 participants</div>