We have extensive expertise in end-to-end modelling of adaptive optics, including atmospheric effects, telescope effects and the AO sub-systems, as well as science observations at large, ground-based telescopes.

PAOLA

• Our in-house IDL analytical tool PAOLA is a fast and convenient way to compute AO-corrected PSFs. It supports both NGS and LGS simulation and can include effects from a segmented primary mirror. Currently, PAOLA is used by more than 30 groups around the world.

Monte-Carlo tools

• We have experience running CAOS, LAOS (Linear Adaptive Optics Simulation, from Brent Ellerbroek) and François Rigaut's AO Simul software. For situations where accurate telescope modelling is required, we have implemented an interface between NRC-HIA's Integrated Model and CAOS, so that the Integrated Model can produce an AO-corrected PSF.

Turbulence Generators

• We have experience in building turbulence generators, using either phase screens or hot air, and in measuring turbulence profiles for site characterization.

AO Systems

• Along with the rest of the NRC-HIA ATRG-V, we have extensive experience and an excellent track record in all the steps required to build scientifically successful and fully­ automated adaptive optics systems, from conceptual design studies through integration, tests and commissioning.

Selected Publications

Refereed Journals

• Ledue, J., Jolissaint, L., Véran, J.-P., Bradley, C., “Calibration and testing with real turbulence of a pyramid sensor employing static modulation”, Optics Express 17, 7186, 2009.
• Poyneer, L., van Dam, M., Véran, J.-P., “Experimental verification of the frozen flow atmospheric turbulence assumption with use of astronomical adaptive optics telemetry”, Journal of the Optical Society of America A 26, 833, 2009.
• Conan, R., Lardière, O., Herriot, G., Bradley, C., Jackson, K., “Experimental assessment of the matched filter for laser guide star wavefront sensing”, Applied Optics 48, 1198, 2009
• Lardière, O., Conan, R., Bradley, C., Jackson, K., Herriot, G., “A laser guide star wavefront sensor bench demonstrator for TMT”, Optics Express 16, 5527, 2008.
• Poyneer, L., Véran, J.-P., “Predictive wavefront control for adaptive optics with arbitrary control loop delays”, Journal of the Optical Society of America A 25, 1486, 2008.
• Poyneer, L. A., Macintosh, B. A., Véran, J.-P., “Fourier transform wavefront control with adaptive prediction of the atmosphere”, Journal of the Optical Society of America A 24, 2645, 2007.
• Jolissaint, L., Véran, J.-P., Conan, R., "Analytical modeling of adaptive optics: the foundations of the phase spatial power spectrum approach", J. Opt. Soc. Am. A 23 (2), 383-394, 2006.
• Davis, D. S., Hickson, P., Herriot, G., She, C.-Y., “Temporal variability of the telluric sodium layer”, Optics Letters 31, 3369-3371, 2006.
• Clare, R. M., Ellerbroek, B. L., Herriot, G., Véran, J.-P., “Adaptive optics sky coverage modeling for extremely large telescopes”, Applied Optics 45, 8964-8978, 2006.
• Andersen, D. R., and 13 colleagues, “Performance Modeling of a Wide-Field Ground-Layer Adaptive Optics System”, Publications of the Astronomical Society of the Pacific 118, 1574-1590, 2006.
• Poyneer, L. & Véran, J.-P., "Optimal modal Fourier-transform wavefront control", J. Opt. Soc. Am. A 22, 1515-1526, 2005.
• Hutchings, J. B., Stoesz, J, Véran, J.P., Rigaut, F. , "60 Milliarcsecond Near-Infrared Imaging of 3C 273 with Altair and Gemini", Publ. Astr. Soc. Pac. 116, 154-160, 2004.
• Davidge, T. J., Stoesz, J., Rigaut, F., Véran, J.-P., Herriot, G., "Deep Near-Infrared Imaging of a Field in the Outer Disk of M82 with the Altair Adaptive Optics System on Gemini-North", Publ. Astr. Soc. Pac. 116, 1-8, 2004.

Conference Proceedings

• Wang, L., Ellerbroek, B., Véran, J.-P., Sinquin, J.-C., “Evaluating sky coverage for the NFIRAOS tip/tilt control architecture”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Andersen, D. R., Conan, R., Ellerbroek, B., Herriot, G., Véran, J.-P., “Negating effects from sodium profile variations for TMT: the MOR truth wavefront sensor of NFIRAOS”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Conan, R., Lardière, O., Bradley, C., Herriot, G., Jackson, K., “Modeling of the Thirty-Meter-Telescope matched-filter-based LGS wavefront sensing”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7093, 2008.
• Atwood, J., Byrnes, P., Herriot, G., Welle, P., “Present optical and mechanical design status of NFIRAOS for TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Lardière, O., Conan, R., Bradley, C., Herriot, G., Jackson, K., “Laser-guide-star wavefront sensing for TMT: experimental results of the matched filtering”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Conan, R., Lardière, O., Bradley, C., Herriot, G., Jackson, K., Modeling of the Thirty-Meter-Telescope matched-filter-based LGS wavefront sensing”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Boyer, C., Gilles, L., Ellerbroek, B., Herriot, G., Véran, J.-P., “Update on the TMT adaptive optics real time controller”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Lai, O., Andersen, D.R., et al, “IMAKA: imaging from Mauna Kea with an atmosphere corrected 1 square degree optical imager,” Proceedings of the SPIE, [7015, 70154H], 2008.
• Boyer, C., Gilles, L., Ellerbroek, B., Herriot, G., Véran, J.-P., “Update on the TMT adaptive optics real time controller”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Andersen, D., Fischer, M., Conan, R., Fletcher, M., Véran, J-P, “VOLT: the Victoria open loop testbed”, Proceedings of the SPIE, [7015-211], 2008.
• Ellerbroek B., Andersen, D., “Sky coverage estimates for the natural guide star mode of the TMT facility AO system NFIRAOS,” Proceedings of the SPIE, [7015, 70155W], 2008.
• Ellerbroek, B ., Adkins, S., Andersen, D., et al. “Progress toward developing the TMT adaptive optical systems and their components,” Proceedings of the SPIE, [7015 70150R], 2008.
• Andersen, D., Ellerbroek, B., Herriot, G., Véran, J-P, Wang, L., “Negating effects from sodium profile variations for TMT: the MOR truth wavefront sensor of NFIRAOS”, Proceedings of the SPIE, [7015-214], 2008.
• Marois, C., Soummer, R. , Bauman, B. J., Macintosh, B. A., “An end-to-end polychromatic Fresnel propagation model of GPI”, Proceedings of the SPIE, [7015-64], 2008.
• Poyneer, L. A., Véran, J.-P., “Toward feasible and effective predictive wavefront control for adaptive optics”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Ellerbroek, B., and 18 colleagues, “Progress toward developing the TMT adaptive optical systems and their components”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Andersen, D. R., Fischer, M., Conan, R., Fletcher, M., Véran, J.-P., “VOLT: the Victoria Open Loop Testbed”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 7015, 2008.
• Graham, J. R., and 12 colleagues, “Ground-Based Direct Detection of Exoplanets with the Gemini Planet Imager (GPI)”, Bulletin of the American Astronomical Society 38, 968, 2007.
• Macintosh, B., Graham, J. R., Palmer, D., Doyon, R., Larkin, J., Oppenheimer, B., Saddlemyer, L., Véran, J., Wallace, J. K., Gemini Planet Imager team, “The Gemini Planet Imager”, Bulletin of the American Astronomical Society 38, 782, 2007.
• Macintosh, B., and 14 colleagues, “Adaptive optics for direct detection of extrasolar planets: the Gemini Planet Imager”, Comptes Rendus Physique 8, 365-373, 2007.
• Trujillo, C. A., and 19 colleagues, “Gemini North Laser Adaptive Optics Performance: First Science Data”, Bulletin of the American Astronomical Society 38, 1076, 2006.
• Andersen, D. R., Gemini GLAO Feasibility Study Team, “A Proposed GLAO System for Gemini”, Bulletin of the American Astronomical Society 38, 1110, 2006.
• Andersen, D. R., and 11 colleagues, “Modeling a GLAO system for the Gemini Observatory”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Hubin, N., and 13 colleagues, “Adaptive optics for Extremely Large Telescopes”, The Scientific Requirements for Extremely Large Telescopes 232, 60-85, 2006.
• Stoesz, J., Véran, J.-P., Roberts, S., Ellerbroek, B., Britton, M., “Evaluation of ground layer adaptive optics for the wide field optical spectrograph on the TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Clare, R. M., Ellerbroek, B. L., Véran, J.-P., Herriot, G., Andersen, D., “Sky coverage and tip/tilt error analysis for TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Véran, J.-P., Herriot, G., “Woofer-tweeter tip-tilt control for NFIRAOS on TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Poyneer, L. A., Véran, J.-P., Dillon, D., Severson, S., Macintosh, B. A., “Wavefront control for the Gemini Planet Imager”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Herriot, G., Hickson, P., Ellerbroek, B., Véran, J.-P., She, C.-Y., Clare, R., Looze, D., “Focus errors from tracking sodium layer altitude variations with laser guide star adaptive optics for the Thirty Meter Telescope”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Boyer, C., Ellerbroek, B., Herriot, G., Véran, J. P., Browne, S., Tyler, G., “TMT adaptive optics systems control architecture”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Herriot, G., and 12 colleagues, “NFIRAOS: TMT narrow field near-infrared facility adaptive optics”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Macintosh, B., and 18 colleagues, “The Gemini Planet Imager”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Ellerbroek, B. L., and 35 colleagues, “A conceptual design for the Thirty Meter Telescopeadaptive optics systems”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.
• Eikenberry, S., and 26 colleagues, “IRMOS: The near-infrared multi-object spectrograph for the TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6269, 2006.
• Szeto, K., and 13 colleagues, “A proposed implementation of a ground layer adaptive optics system on the Gemini Telescope”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6269, 2006.
  Andersen, D. R., and 11 colleagues, “The MOAO system of the IRMOS near-infrared multi-object spectrograph for TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6269, 2006.
• Macintosh, B., Graham, J., Oppenheimer, B., Poyneer, L., Sivaramakrishnan, A., Véran, J.-P., “MEMS-based extreme adaptive optics for planet detection”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6113, 48-57, 2006.
• Gavel, D., Bauman, B., Dekany, R., Britton, M., Andersen, D., “Adaptive optics designs for an infrared multi-object spectrograph on TMT”, Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6272, 2006.

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