Reference-free beam-sampling (RFBS) methodology and system for optical freeform surface measurements by Guo, Wenjiang

“…It is used for flatness and aberration measurements, optical alignment, and adaptive optics. If applying the SHWS technique to measure freeform surfaces, the sampling is an issue as the focal spot image obtained is of poor quality, which degrades the measurement performance and many of the times even make it impossible to reveal the surface profile. …”
Get full text

THE SINS SURVEY: SINFONI INTEGRAL FIELD SPECTROSCOPY OF z similar to 2 STAR-FORMING GALAXIES by Schreiber, N, Genzel, R, Bouche, N, Cresci, G, Davies, R, Buschkamp, P, Shapiro, K, Tacconi, L, Hicks, E, Genel, S, Shapley, A, Erb, D, Steidel, C, Lutz, D, Eisenhauer, F, Gillessen, S, Sternberg, A, Renzini, A, Cimatti, A, Daddi, E, Kurk, J, Lilly, S, Kong, X, Lehnert, MD, Nesvadba, N

“…The ionized gas distribution and kinematics are spatially resolved on scales ranging from 1.5 kpc for adaptive optics assisted observations to typically 4-5 kpc for seeing-limited data. …”

Further seasonal changes in Uranus' cloud structure observed by Gemini-North and UKIRT by Irwin, P, Teanby, N, Davis, G, Fletcher, L, Orton, G, Calcutt, S, Tice, D, Hurley, J

“…Observations were acquired using adaptive optics and have a spatial resolution of approximately 0.1-0.2'.The observed spectra along Uranus' central meridian were analysed using a multiple-scattering retrieval algorithm to infer the vertical/latitudinal variation in cloud optical depth, which we compare with previous observations made by Gemini-North/NIFS in 2009 and UKIRT/UIST observations made between 2006 and 2008. …”

SN 2009md: another faint supernova from a low-mass progenitor by Fraser, M, Ergon, M, Eldridge, J, Valenti, S, Pastorello, A, Sollerman, J, Smartt, S, Agnoletto, I, Arcavi, I, Benetti, S, Botticella, M, Bufano, F, Campillay, A, Crockett, R, Gal-Yam, A, Kankare, E, Leloudas, G, Maguire, K, Mattila, S, Maund, JR, Salgado, F, Stephens, A, Taubenberger, S, Turatto, M

“…We present adaptive optics imaging of the core-collapse supernova (SN) 2009md, which we use together with archival Hubble Space Telescope data to identify a coincident progenitor candidate. …”

Spectral analysis of Uranus' 2014 bright storm with VLT/SINFONI by Irwin, P, Fletcher, L, Read, P, Tice, D, de Pater, I, Orton, G, Teanby, N, Davis, G

“…. ×. 64 pixel images with 2048 wavelengths and uses adaptive optics. Image cubes in the H-band (1.43-1.87. μm) were obtained at spatial resolutions of ~0.1″ per pixel. …”

Multispectral imaging observations of Neptune's cloud structure with Gemini-North by Irwin, P, Teanby, N, Davis, G, Fletcher, L, Orton, G, Tice, D, Hurley, J, Calcutt, S

“…Observations were acquired in adaptive optics mode and have a spatial resolution of approximately 0.15-0.25″. …”

MagAO-X and HST High-contrast Imaging of the AS209 Disk at Hα by Gabriele Cugno, Yifan Zhou, Thanawuth Thanathibodee, Per Calissendorff, Michael R. Meyer, Suzan Edwards, Jaehan Bae, Myriam Benisty, Edwin Bergin, Matthew De Furio, Stefano Facchini, Jared R. Males, Laird M. Close, Richard D. Teague, Olivier Guyon, Sebastiaan Y. Haffert, Alexander D. Hedglen, Maggie Kautz, Andrés Izquierdo, Joseph D. Long, Jennifer Lumbres, Avalon L. McLeod, Logan A. Pearce, Lauren Schatz, Kyle Van Gorkom

“…H α ( λ = 0.656 μ m) is expected to be the strongest accretion line observable from the ground with adaptive optics systems, and is therefore the target of specific high-contrast imaging campaigns. …”
Get full text

An Atmospheric Turbulence Compensation Algorithm Based on FSM-DM Cascaded AO Architecture for FSO Communications by Hongliang Mao, Jie Zhong, Siyuan Yu, Pei Xiao, Xinghao Yang, Gaoyuan Lu

“…Although a single deformable mirror (DM) adaptive optics (AO) system is a good solution, its performance remains unsatisfactory as the proportion of tilts aberrations becomes relatively high. …”
Get full text

Ophthalmic and Genetic Features of Bardet Biedl Syndrome in a German Cohort by Fadi Nasser, Susanne Kohl, Anne Kurtenbach, Melanie Kempf, Saskia Biskup, Theresia Zuleger, Tobias B. Haack, Nicole Weisschuh, Katarina Stingl, Eberhart Zrenner

“…Sixty-one patients, aged 5–56 years, underwent a detailed ophthalmic examination including visual acuity and color vision testing, electroretinography (ERG), visually evoked potential recording (VEP), fundus examination, and spectral domain optical coherence tomography (SD-OCT). Adaptive optics flood illumination ophthalmoscopy was performed in five patients. …”
Get full text

Multi-modal and multi-scale clinical retinal imaging system with pupil and retinal tracking by Muhammad Faizan Shirazi, Jordi Andilla, Nicolas Lefaudeux, Claudia Valdes, Florian Schwarzhans, Marine Durand, Konstantinos Ntatsis, Danilo Andrade De Jesus, Luisa Sanchez Brea, Kiyoko Gocho, Josselin Gautier, Christina Eckmann-Hansen, Marie Elise Wistrup Torm, Abdullah Amini, Stefan Klein, Theo Van Walsum, Kate Grieve, Michel Paques, Michael Larsen, Pablo Loza-Alvarez, Xavier Levecq, Nicolas Chateau, Michael Pircher

“…For high resolution, and high lateral resolution in particular, cellular imaging correction of aberrations by adaptive optics (AO) is employed. The entire instrument has a compact design and the scanning head is mounted on motorized translation stages that enable 3D self-alignment with respect to the subject’s eye by tracking the pupil position. …”
Get full text

An active piezoelectric plane X-ray focusing mirror with a linearly changing thickness by Naxi Tian, Hui Jiang, Jianan Xie, Shuai Yan, Dongxu Liang, Zhisen Jiang

“…Deformable mirrors are adaptive optics that can produce a flexible surface figure. …”
Get full text

Understanding In Vivo Chromatic Aberrations in Pseudophakic Eyes Using on Bench and Computational Approaches by Maria Vinas-Pena, Alberto de Castro, Carlos Dorronsoro, Ana Gonzalez-Ramos, Suad Redzovic, Nicolas Willet, Nuria Garzon, Susana Marcos

“…Patient data consisted of results from 63 pseudophakic eyes reported in four different studies and obtained psychophysically in the visual testing channel of a custom-developed polychromatic adaptive optics system. Computational predictions were obtained using ray tracing on computer eye models, and modulation transfer function (MTF) on bench measurements on physical eye models. …”
Get full text

Disruptive space telescope concepts, designs, and developments: OASIS and Nautilus -INVITED by Kim Dae Wook, Walker Christopher K., Apai Dániel, Milster Tom D., Takashima Yuzuru, Schneider Glenn, Liang Rongguang, Kim Young-sik, Fellows Chuck, Zhang Yingying, Gasper Andras, Smith I. Steve, Crowe Devon, Bixel Alex, O’Dougherty Stefan, Sirsi Siddhartha, Chandra Aman, Phan Andy, Wang Zichan, Purvin Kira, Quach Henry, Esparza Marcos, Berkson Joel, Spires Oliver, Choi Heejoo, Kim Geon Hee, Arenberg Jonathan

“…OASIS combines break-through inflatable aperture and adaptive optics techniques to realize the dream of a 20+ meter class spaceborne terahertz/far-infrared telescope. …”
Get full text

Comparison of Multiscale Imaging Methods for Brain Research by Jessica Tröger, Christian Hoischen, Birgit Perner, Shamci Monajembashi, Aurélien Barbotin, Anna Löschberger, Christian Eggeling, Michael M. Kessels, Britta Qualmann, Peter Hemmerich

“…We also analyzed the impact of adaptive optics, a motorized objective correction collar and CUDA graphics card technology on imaging quality and acquisition speed. …”
Get full text

Optical coherence tomography and optical coherence tomography angiography: essential tools for detecting glaucoma and disease progression by Yukihiro Shiga, Yukihiro Shiga, Takashi Nishida, Jin Wook Jeoung, Adriana Di Polo, Adriana Di Polo, Brad Fortune

“…Other advances in software and hardware, such as artificial intelligence-based algorithms, adaptive optics, and visible-light OCT, may further benefit clinical management of glaucoma in the future. …”
Get full text

Modeling rod and cone photoreceptor cell survival in vivo using optical coherence tomography by S. Scott Whitmore, Adam P. DeLuca, Jeaneen L. Andorf, Justine L. Cheng, Mahsaw Mansoor, Christopher R. Fortenbach, D. Brice Critser, Jonathan F. Russell, Edwin M. Stone, Ian C. Han

“…Currently, in vivo visualization of individual photoreceptors requires technology such as adaptive optics, which has numerous limitations and is not widely used. …”
Get full text

A Survey of Herbig Ae/Be Multiplicity by S. J. Thomas, B. Rodgers, N. S. van der Bliek, G. Doppmann, J. Bouvier, C. Araya Salvo, J.-L. Beuzit, F. Rigaut

“…We aim to create a statistically significant survey of HAEBE multiplicity as a function of stellar mass, to shed light on mixed-mass star formation. Two independent adaptive optics IR imaging surveys were conducted, between 1993 and 2007. …”
Get full text

Direct Exoplanet Detection using Convolutional Image Reconstruction (ConStruct): A New Algorithm for Post-processing High-contrast Images by Trevor N. Wolf, Brandon A. Jones, Brendan P. Bowler

“…We present a novel machine-learning approach for detecting faint point sources in high-contrast adaptive optics (AO) imaging data sets. The most widely used algorithms for primary subtraction aim to decouple bright stellar speckle noise from planetary signatures by subtracting an approximation of the temporally evolving stellar noise from each frame in an imaging sequence. …”
Get full text

YOUNG “DIPPER” STARS IN UPPER SCO AND OPH OBSERVED BY K2 by Ansdell, M., Gaidos, E., Jacobs, T. L., LaCourse, D. M., Jek, K. J., Mann, A. W., Wyatt, M. C., Kennedy, G., Williams, J. P., Boyajian, T. S., Rappaport, Saul A

“…To investigate the nature of these "dippers" we obtained: optical and near-infrared spectra to determine stellar properties and identify accretion signatures; adaptive optics imaging to search for close companions that could cause optical variations and/or influence disk evolution; and millimeter-wavelength observations to constrain disk dust and gas masses. …”
Get full text
Get full text

TESS Hunt for Young and Maturing Exoplanets (THYME): a planet in the 45 Myr Tucana–Horologium association by Newton, Elisabeth R., Ricker, George R., Vanderspek, Roland K., Seager, Sara, Burke, Christopher J., Fausnaugh, Michael, Villasenor, Jesus Noel Samonte, Villeneuva, Steven

“…We validated the planet and improved the stellar parameters using a suite of new and archival data, including spectra from Southern Astrophysical Research/Goodman, South African Extremely Large Telescope/High Resolution Spectrograph and Las Cumbres Observatories/Network of Robotic Echelle Spectrographs; transit photometry from Spitzer; and deep adaptive optics imaging from Gemini/Gemini Planet Imager. …”
Get full text