Results 31 to 40 of about 51,201 (322)

Concept and optical design of the cross-disperser module for CRIRES [PDF]

, 2014
This is the peer reviewed version of the following article: Oliva, Ernesto, A. Tozzi, D. Ferruzzi, L. Origlia, A. Hatzes, R. Follert, T. Loewinger et al.
Anglada-Escude, G, Baade, D, Bristow, P, Delabre, B, Dorn, RJ, Ferruzzi, D, Follert, R, Gojak, D, Grunhut, J, Hatzes, A, Heiter, U, Hilker, M, Ives, DJ, Jung, Y, Kaeufl, HU, Kerber, F, Klein, B, Lizon, JL, Lockhart, M, Loewinger, T, Marquart, T, Oliva, E, Origlia, L, Pasquini, L, Paufique, J, Piskunov, N, Pozna, E, Reiners, A, Seemann, U, Smette, A, Smoker, J, Stempels, E, Tozzi, A, Valenti, E   +33 more
core   +2 more sources

The Durham Adaptive Optics Simulation Platform (DASP): Current status

SoftwareX, 2018
The Durham Adaptive Optics Simulation Platform (DASP) is a Monte-Carlo modelling tool used for the simulation of astronomical and solar adaptive optics systems.
A.G. Basden, N.A. Bharmal, D. Jenkins, T.J. Morris, J. Osborn, J. Peng, L. Staykov   +6 more
doaj   +1 more source

M-lines characterization of selenide and telluride waveguides for mid-infrared interferometry [PDF]

, 2006
Nulling interferometry is an astronomical technique that combines equal wavefronts to achieve a deep rejection ratio of an on-axis star, and that could permit to detect Earth-like planets in the mid-infrared band 5 -- 20 microns.
Arezki, Brahim, Broquin, Jean-Emmanuel, Kern, Pierre, Labadie, Lucas, Pradel, Annie, Vigreux-Bercovici, Caroline   +5 more
core   +4 more sources

Task performance in astronomical adaptive optics [PDF]

SPIE Proceedings, 2006
In objective or task-based assessment of image quality, figures of merit are defined by the performance of some specific observer on some task of scientific interest. This methodology is well established in medical imaging but is just beginning to be applied in astronomy.
Harrison H, Barrett, Kyle J, Myers, Nicholas, Devaney, J C, Dainty, Luca, Caucci   +4 more
openaire   +2 more sources

Demonstration of new technology MEMS and liquid crystal adaptive optics on bright astronomical objects and satellites

Optics Express, 2002
David C. Dayton, John D. Gonglewski, Sergio R. Restaino, Jeffrey W. Martin, James D. Phillips, Mary Hartman, Stephen L. Browne, P. Kervin, Joshua Snodgrass, Nevin Heimann, Michael L. Shilko, Richard Pohle, Bill Carrion, Clint Smith, Daniel Thiel   +14 more
openalex   +3 more sources

Three-Dimensional Manipulation for Self-Focusing Behavior via the State of Polarization

Frontiers in Physics, 2022
In this work, the controllable self-focusing behavior is first investigated by manipulating the state of polarization (SoP), that is, the phase difference between two polarized components at the initial optical field, which can be used to realize the ...
Lu Lu, Zhiqiang Wang, Zhiqiang Wang, Rong Lin, Yangjian Cai, Yangjian Cai   +5 more
doaj   +1 more source

The Discovery of a Companion to the Very Cool Dwarf Gl~569~B with the Keck Adaptive Optics Facility [PDF]

, 1999
We report observations obtained with the Keck adaptive optics facility of the nearby (d=9.8 pc) binary Gl~569. The system was known to be composed of a cool primary (dM2) and a very cool secondary (dM8.5) with a separation of 5" (49 Astronomical Units ...
B. F. Lane, Baraffe I., C. D. Koresko, E. L. Martín, Festin L., Leinert C., P. L. Wizinowich, Pallavicini R., S. R. Kulkarni, Zapatero Osorio M. R.   +9 more
core   +2 more sources

Pupil stabilization for SPHERE's extreme AO and high performance coronagraph system [PDF]

, 2007
We propose a new concept of pupil motion sensor for astronomical adaptive optics systems and present experimental results obtained during the first laboratory validation of this concept.
Beuzit, J. -L., Charton, J., Fusco, T., Jocou, L., Montagnier, G., Mouillet, D.   +5 more
core   +2 more sources

Research on the Time Drift Stability of Differential Inductive Displacement Sensors with Frequency Output

Sensors, 2022
An edge displacement sensor is one of the key technologies for building large segmented mirror astronomical optical telescopes. A digital interface is one novel approach for sensor technologies, digital transformation and the Internet of Things (IoT) in ...
Xiaolong Lu, Guiyun Tian, Zongwen Wang, Wentao Li, Dehua Yang, Haoran Li, You Wang, Jijun Ni, Yong Zhang   +8 more
doaj   +1 more source

NFIRAOS First Facility AO System for the Thirty Meter Telescope [PDF]

, 2014
NFIRAOS, the Thirty Meter Telescope's first adaptive optics system is an order 60x60 Multi-Conjugate AO system with two deformable mirrors. Although most observing will use 6 laser guide stars, it also has an NGS-only mode. Uniquely, NFIRAOS is cooled to
Andersen, David, Atwood, Jenny, Boyer, Corinne, Byrnes, Peter, Caputa, Kris, Ellerbroek, Brent, Gilles, Luc, Herriot, Glen, Hill, Alexis, Ljusic, Zoran, Pazder, John, Rosensteiner, Matthias, Smith, Malcolm, Spano, Paolo, Szeto, Kei, Véran, Jean-Pierre, Wang, Lianqi, Wevers, Ivan, Wooff, Robert   +18 more
core   +2 more sources