Results 91 to 100 of about 21,086 (310)

Adaptive optics for the CHARA array [PDF]

, 2016
The CHARA Array is a six telescope optical/IR interferometer run by the Center for High Angular Resolution Astronomy of Georgia State University and is located at Mount Wilson Observatory just to the north of Los Angeles California.
Ridgway, Stephen T, Sturmann, Laszlo, Sturmann, J, Turner, Nils, Che, X, Tuthill, P G, ten Brummelaar, Theo, Monnier, J. D, McAlister, H, Ireland, Michael, Ireland, M. J   +10 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Simulation of Coherent Beam Propagation in Laboratory and Numerical Experiments: A Comparison of Results

Photonics
This paper presents the results of processing and systematizing data from laboratory and numerical experiments to correct the distortions of laser radiation propagating through a randomly inhomogeneous medium.
Feodor Kanev, Alexey Rukosuev, Ilya Galaktionov, Julia Sheldakova, Igor Veretekhin   +4 more
doaj   +1 more source

Simulation of adaptive optical systems

17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996
A problem of simulation for an adaptive optical system realized as a discrete mirror consisting of a finite number of identical elements is solved. The authors have also investigated the control displacement of mirrors elements in accordance with variation of wave front set.
openaire   +3 more sources

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

Adaptive optics for laser space debris removal [PDF]

, 2016
Space debris in low Earth orbit below 1500km is becoming an increasing threat to satellites and spacecrafts. Radar and laser tracking are currently used to monitor the orbits of thousands of space debris and active satellites are able to use this ...
Rigaut, Francois, Conan, Rodolphe, d'Orgeville, Celine, Ritchie, Ian, Smith, C, Dawson, Murray, Bennet, Francis, Paulin, Nicolas, Uhlendorf, Kristina, Price, Ian   +9 more
core   +1 more source

Applicability of mitotic figure counting by deep learning: a development and pan‐cancer validation study

FEBS Open Bio, EarlyView.
In this study, we developed a deep learning method for mitotic figure counting in H&E‐stained whole‐slide images and evaluated its prognostic impact in 13 external validation cohorts from seven different cancer types. Patients with more mitotic figures per mm2 had significantly worse patient outcome in all the studied cancer types except colorectal ...
Joakim Kalsnes, Maria X. Isaksen, Frida Julbø, Manohar Pradhan, Andreas Kleppe, Sepp De Raedt, Ole‐Johan Skrede, Turid Torheim, John Arne Nesheim, Hans Martin Mohn, Hanne A. Askautrud, Karolina Cyll, Wanja Kildal, Emma Rewcastle, Melinda Lillesand, Vebjørn Kvikstad, Emiel Janssen, Robert Jones, Odd Terje Brustugun, Bjørn Brennhovd, Erik Skaaheim Haug, Lill‐Tove Rasmussen Busund, Elin Richardsen, Sigve Andersen, Tom Dønnem, Kristina Lindemann, Gunnar Kristensen, Neil A. Shepherd, Marco Novelli, Knut Liestøl, David Kerr, Håvard E. Danielsen, Tarjei S. Hveem   +32 more
wiley   +1 more source

The Giant Magellan Telescope adaptive optics program

, 2014
The Giant Magellan Telescope (GMT) adaptive optics (AO) system will be an integral part of the telescope, providing laser guidestar generation, wavefront sensing, and wavefront correction to every instrument currently planned on the 25.4 m diameter GMT ...
Jose M. Filgueira, Pinna, Enrico, Bouchez, A, van Dam, Marcos Alejandro, Gelys Trancho, Simone Esposito, Antonin H. Bouchez, Daniele Gallieni, Acton, D. Scott, Biasi, Roberto, Roberto Biasi, D. S. Acton, Conan, Rodolphe, Fernando Santoro, Filgueira, Josema, Brady Espeland, Gallieni, Daniele, Santoro, Fernando, Brian A. McLeod, Marcos A. van Dam, McLeod, Brian A, Trancho, Gelys, Espeland, Brady, Rodolphe Conan, Enrico Pinna, Esposito, Simone   +25 more
core   +1 more source

TMT NFIRAOS: adaptive optics for the Thirty Meter Telescope [PDF]

, 2012
NFIRAOS is the first-light adaptive optics system planned for the Thirty Meter Telescope, and is being designed at the National Research Council of Canada's Herzberg Institute of Astrophysics. NFIRAOS is a laser guide star multi-conjugate adaptive optics
Joeleff Fitzsimmons, Glen Herriot, Corinne Boyer, Peter Byrnes, Malcolm Smith, Wang, Lianqi, Carlos Correia, Ivan Wevers, Fitzsimmons, Joeleff, Boucher, Marc-Andre, Brent Ellerbroek, Véran, Jean-Pierre, Lianqi Wang, Herriot, Glen, Gilles, Luc, Dan Kerley, Boyer, Corrine, Jennifer Dunn, Caputa, Kris, Ellerbroek, Brent, Hill, Alexis, Reshetov, Vlad, Andersen, David, Hickson, Paul, Marc-André Boucher, John Pazder, Boucher, Marc-Andr\ue9, Paul Hickson, Luc Gilles, Byrnes, Peter, Jenny Atwood, Kerley, Dan, Kris Caputa, Jean-Pierre Véran, Wevers, Ivan, Correia, Carlos, V\ue9ran, Jean-Pierre, Alexis Hill, Scott Roberts, Atwood, Jenny, Pazder, John, Dunn, Jennifer, Boyer, Corinne, Roberts, Scott, Smith, Malcolm, David Andersen, Vlad Reshetov   +46 more
core   +1 more source

TROIA adaptive optics system for DAG telescope ::assembly and laboratory performance prior to on-sky assessment

, 2022
In this article, we describe the current status of the development of TROIA ∗, a pyramid wavefront sensor based adaptive optics system designed for DAG, a new 4 m telescope located in Eastern Anatolia, Turkey.
Bouxin, Audrey, Keskin, Onur, Yesilyaprak, Cahit, Jolissaint, Laurent   +3 more
core   +1 more source